Jerry Garcia Music Arts Launches its New Independent Music Label with Release

first_imgJerry Garcia Music Arts LLC, a new mission-based music and arts entertainment services company, celebrates Jerry Garcia’s August 1st birthday worldwide with a remastered live recording of “Ripple” from the virtuoso’s historic 1982 solo acoustic performance at the Capitol Theater in Passaic, New Jersey.Ripple Watercolor Artist: Jerry GarciaThe “Ripple ” single will soon be available on iTunes, Spotify, Google Play, Deezer, iHeartRadio, Napster, MediaNet, VerveLife, Tidal, Gracenote, Shazam, and 7Digital.Garcia’s watercolor, also titled “Ripple,” is thematically paired with the music release and will be available as a museum-quality, limited-edition giclée via the Terrapin Stationers Gallery.

A portion of the proceeds from the “Ripple” art piece will support ocean preservation.Jerry Garcia became well known throughout the world as the lead guitarist, vocalist, and composer for the Grateful Dead. In addition to his musical contributions, he was a prolific visual artist and an avid environmentalist. Several of the musician’s paintings are sea-themed compositions inspired by his scuba diving and family trips to Hawaii, where he actively supported coral reef preservation.Garcia thought of himself as “an artist who played music.” He also referred to playing music as a “public service.”In this spirit, Jerry Garcia Music Arts unveils its first project featuring the legend’s fine art and music.Garcia family members Keelin Garcia and Manasha Garcia have curated the music and art for the new release as producers of the project.The recordings were mastered and coproduced by audio engineer Joe Gastwirt, who worked closely with Garcia and his music since the 1980s. He is known for his meticulous work in digitally remastering hundreds of recordings for many well-known artists, including the Grateful Dead; The Beatles; Jimi Hendrix; Bob Dylan; Joni Mitchell; Crosby, Stills, and Nash; and Yes.last_img read more

Amy Winehouse StateOfTheArt Hologram To Tour The World

first_img Email Facebook News Twitter Read more The late GRAMMY winner’s catalog will be brought to life in a performance complete with a live band Jennifer VelezGRAMMYs Oct 22, 2018 – 1:04 pm A hologram will bring the late Amy Winehouse to the stage again in a world tour that will begin at the end of 2019.The GRAMMY winner, who came to fame for her soulful vocals and jazz, R&B and pop-infused ballads, will be projected performing digitally remastered original recordings along with a live  band. Mitch Winehouse, the singer’s father, told Reuters that all proceeds from the concerts will go to the foundation established after Winehouse’s death, the Amy Winehouse Foundation.”Fans have been clamoring for something new from Amy, but really there isn’t anything new” in terms of music, Mitch Winehouse said. “We felt this would be a tremendous way for Amy both to revisit her fans through a hologram, and also an incredible way to raise money for our foundation.”The hologram will be produced in partnership with Base Hologram. Mixing “advanced holographic cinema with live entertainment” and using “state-of-the-art proprietary technology,” the studio is currently bringing entertainment experiences to audiences including the concerts of late Maria Callas and Roy Orbison in concert, both which currently are still touring. Amy Winehouse “State-Of-The-Art” Hologram To Tour The World We’re excited to announce that we’re partnering with the family of GRAMMY Award-winning artist @amywinehouse to celebrate her legacy. This worldwide hologram tour, set to start in late 2019, will raise funds and awareness for @AmysFoundation!— BASE Hologram (@BASEHologram) October 11, 2018Winehouse’s concert will mimic her stage presence, her movement and dancing on stage. Base will hire an actress who will reenact Winehouse in order to make the hologram, which will then be completed with prosthetics and computer generated imagery, according to Reuters.In the past, holograms have brought dead iconic singers to stages like Tupac’s 2012 Coachella experience and a performance by Michael Jackson at Billboard Music Awards in 2014.Winehouse died at the age of 27 as a result of alcohol poisoning. She was six-time GRAMMY winner, including for Record Of The Year for “Rehab” and Best New Artist at the 50th GRAMMY Awards.Winehouse’s concert will reportedly be between 75 and 110 minutes in length, giving her many adoring fans a new way to experience her music and celebrate her legacy.”Tom Petty Weekend” Celebrated In Home Town Of Gainesville, Fla. Amy Winehouse Hologram To Tour The World amy-winehouse-state-art-hologram-tour-worldlast_img read more

What Are Town Boards Committees Talking About Week of June 30 2019

first_imgWILMINGTON, MA — According to the Wilmington Town Clerk’s calendar, there are several town board, committee and commission meetings scheduled for the week of Sunday, June 30, 2019.Sunday, June 30, 2019No MeetingsMonday, July 1, 2019The Wilmington Housing Authority meets at 5pm in Deming Way’s Community Hall. Read the agenda HERE.Tuesday, July 2, 2019No MeetingsWednesday, July 3, 2019No MeetingsThursday, July 4, 2019No MeetingsFriday, July 5, 2019No MeetingsSaturday, July 6, 2019No Meetings(NOTE: While unlikely, it is possible additional meetings could be added to this week’s calendar on Wednesday, Thursday, or Friday.  It’s best to check the Town Clerk’s calendar mid-week.)Like Wilmington Apple on Facebook. Follow Wilmington Apple on Twitter. Follow Wilmington Apple on Instagram. Subscribe to Wilmington Apple’s daily email newsletter HERE. Got a comment, question, photo, press release, or news tip? Email this:TwitterFacebookLike this:Like Loading… RelatedWhat Are Town Boards & Committees Talking About? (Week of August 11, 2019)In “Government”What Are Town Boards & Committees Talking About? (Week of July 28, 2019)In “Government”What Are Town Boards & Committees Talking About? (Week of July 21, 2019)In “Government”last_img read more

William Shatner isnt fazed by a Tarantino Star Trek

first_img 15 famous Star Trek guests who brought their own star power (pictures) TV and Movies “Why are people plotzing about this?” Shatner asked, citing Star Trek: Discovery’s use of expletives in some episodes. He wondered why people weren’t melting down over Discovery’s f-bombs. (Disclosure: CBS is the parent company of CNET and CBS All Access, which streams Star Trek: Discovery.)  For the record, there was quite a bit of discussion around Discovery’s swearing, with fans coming down on both sides of the debate. Star Trek aficionados also seem to be divided over Tarantino. One fan worried the director would forget the “heart of Star Trek” in a quest for an R-rated film. Why are people plotzing about this? It’s my understanding that Star Trek Discovery has used expletives in some episodes. 🤷🏼‍♂️ Why aren’t people melting down over that?— William Shatner (@WilliamShatner) June 13, 2019 I love Tarantino. I do. But if forgetting the heart of Star Trek for the goal of an R rating is what you’re gonna do, please don’t touch Star Trek.— Andrew – Inmate 34 (@TheRumbleKid) June 12, 2019 William Shatner speaks at a Star Trek convention. Amanda Kooser/CNET For a long time, the occasional “hell” and “damn it” were the harshest expletives heard in the Star Trek universe. That’s one of the reasons some fans are antsy at the prospect of famously bloody and sweary Quentin Tarantino potentially shepherding an R-rated Star Trek movie onto the big screen. William Shatner doesn’t see what the big deal is. The original Captain Kirk actor weighed in on an article from Empire that quotes Pulp Fiction director Tarantino as saying the project would indeed be R-rated and full of swear words.  In a Reddit discussion, another fan said even Discovery was “pushing the envelope of family-friendly and that’s a big part of Trek’s appeal to me.” Tarantino told Empire he still needs to weigh in on the script that’s been written around his concept. This means an actual film is a long way from a done deal.  Share your voice Tags Comments 15 Photos 4 Star Treklast_img read more

Peloton Mirror and ClassPass bring the smart gym home

first_img Bluetooth Fitness Google 21 Photos Testing smart fitness techMirror, the Peloton Bike and the Peloton Tread were installed for me by professional dealers sourced by Mirror and Peloton. Mirror charges an extra $250 for the delivery and installation; Peloton includes it with your purchase, which is good because the Tread, in particular, weighs over 450 pounds (over 200 kg).  After each installation, it was my turn to download the Mirror app or access the Peloton touchscreen display to create my account, sign up for classes and start exercising. ClassPass Live was the only service out of the four that had a simple do-it-yourself installation process. It involved connecting the Google Chromecast to my TV and making sure the ClassPass app was functioning properly.  From there, testing was all about trying out a bunch of different classes and seeing how well the app, TV screen or display made it for me to follow along, improve my technique and stay motivated. Value also plays a large part here, since the products I tested ranged from the $79 ClassPass Live service with a $19 monthly fee to the $3,995 Peloton Tread with a $39 monthly fee.  Here are some questions I routinely asked myself: Would I really use this? Is there enough variety in these classes? Does this cost too much? How does this product/subscription compare to the competition? Does it motivate me as much as being in a studio gym class? How much space would this smart gym equipment take up in my home? ClassPass Live offers the best overall value and has my favorite classes (both in terms of variety and how they’re filmed). Mirror has the best heart-rate monitor integration via its easy-to-read screen. Both Peloton products are well-designed and keep you motivated by displaying real-time competitive rankings every time you take a class. There’s no overall winner here because each product or service offers something different. There’s a lot more smart fitness tech out there, too — from electricity-generating treadmills to home boxing systems — we’ve just barely scratched the surface.  2:59 8 Tags Workout better at home with ClassPass Live Peloton Bike brings smart indoor cycling home Peloton Tread makes running at home much better All the gadgets for getting healthy at CES 2019 Smart fitness reviews Smart fitness tech bridges the gap between a personal trainer or instructor-led studio exercise classes and winging it on your own with dumbbells or cardio. Through apps, built-in touchscreen displays, remote classes, free weights and more, you can stay motivated even when you’re working out at home.  In my search for the best smart home gym, I specifically tried out ClassPass Live, the Mirror, the Peloton Bike and the Peloton Tread, but you can find others with a variety of fitness levels out there now, and plenty more health and fitness products on the way.  All four of the fitness kits I reviewed offer something a bit different, so I’ve put together descriptions of each one below, including where they excel and where they need some work. Let’s get started.  Note that CNET may get a share of revenue from the sale of products featured on this page. Read more: Peloton, Daily Burn and more: The best workout video apps This smart fitness tech replaces a gym membership Smart Home Sport and Outdoors Fitness Now playing: Watch this: Originally posted January 19.  Best laptops for college students: We’ve got an affordable laptop for every student. Best live TV streaming services: Ditch your cable company but keep the live channels and DVR. Fitness equipment that’s clever enough for your smart home Comments 14 Photos Share your voice ClassPass Live Editor’s note, May 22, 2019: ClassPass Live is now only available to ClassPass subscribers and is included with the monthly membership fee.ClassPass Live costs $79 up front and has a $19 monthly subscription service. For your initial $79, you get a Google Chromecast and a Wahoo Tickr heart-rate monitor. ClassPass says you need that specific heart-rate monitor to see your stats on the screen.  Connect the Chromecast to your TV and stream exercise classes from the ClassPass mobile app.  The good stuff At $79 with a $19 subscription, ClassPass Live is by far the most affordable thing I tested.  The classes are shot from a variety of angles and feature multiple participants (beyond just the instructor). That means you can see the workout routines from different angles and try the exercise modifications other studio participants use if you want to take it a little easier.  Not only are the classes shot well, but there are a lot of classes and fitness levels to choose from — strength training, high intensity interval training, yoga, cardio and more.  The not-so-good stuff The heart-rate monitor never connected successfully during my testing, even after extensive troubleshooting of the device. While the ClassPass app is full of great classes to help you get fit, it’s weirdly designed and somewhat glitchy.  Read my full review of ClassPass Live. See it at ClassPass Mirror is, well, a mirror, that doubles as a screen and walks you through workout classes. Tyler Lizenby/CNET Mirror The Mirror is a $1,495 full-length mirror. It’s also part LCD screen. Pay $39 per month to access live and on-demand fitness classes that play on the mirror while you also watch yourself. Mirror offers classes in different disciplines, and with different lengths and fitness levels. It comes with the mirror, a Bluetooth heart-rate monitor and six fitness bands. The workouts are “body weight” exercises so you don’t need additional equipment like dumbbells. It’s only available in the continental US. The good stuff The heart-rate integration worked seamlessly, from connecting the monitor in the app to viewing my heart rate in real time on the Mirror’s screen.  The Mirror’s display provided a lot of helpful information — how many segments there were in a workout, how much time was left in each segment (and in the total workout), and more — without looking clunky or cluttered.  The not-so-good stuff The Mirror doesn’t have an Android app; it currently only works with an iOS device. You can’t watch workouts on the app, so forget about exercising with the Mirror when you’re travelling — or otherwise away from the mirror.  The mirror part of the Mirror is supposed to help you check your form while you exercise, but it isn’t full-length enough for you to see yourself during floor exercises (rendering it somewhat useless when you aren’t standing). Read my full review of Mirror. See it at Mirrorpeloton-bike-product-photos-6Channel your inner cyclist with Peloton’s spin bike.  Tyler Lizenby/CNET Peloton Bike Peloton’s $2,245 Bike is a spin bike designed to mimic what it’s like to ride on the road. It has an adjustable seat and handle bars and features a 21.5-inch touchscreen display. Use the display to participate in live and on-demand classes from home — this feature costs an additional $39 per month. (It’s £1,895, plus £39 per month, in the UK. It’s not yet available in Australia.) The good stuff The Peloton Bike is sturdy and whisper-quiet with room for two water bottles in the front and two hand weights in the back. You get access to a ton of cycling and noncycling classes with your $39 monthly subscription and excellent motivational tools like performance rankings so you can compete with other participants in real time.  The not-so-good stuff It’s expensive. $2,245 plus the $39 monthly fee is a definite investment. Look Delta-compatible spin shoes and cleats are a must if you want to clip into the Peloton pedals. They aren’t hard to find, but they’re less common than the standard SPD shoes and cleats you use in a typical spin class.  The water bottle holders are plasticky and a bit flimsy.  Read my full review of the Peloton Bike. See it at Pelotonpeloton-tread-product-photos-1Running is hard, but Peloton’s Tread makes it a lot more fun. Tyler Lizenby/CNET Peloton Tread The $3,995 Peloton Tread is a smart treadmill. Pay $39 per month to access Peloton’s live and on-demand Tread classes. Train for a beginner 5K or participate in an advanced high intensity class alongside other seasoned runners. The Tread features a 32-inch touchscreen display, too, so you can easily follow along with whatever guided classes you select, access your profile settings and view your stats, including calories burned, from each workout. (It’s not yet available in the UK or Australia.) The good stuff The Tread is beautifully designed from its slatted belt and zippered storage compartments to its 32-inch touchscreen display and sturdy stand with enough room for two water bottles, your phone and snacks.  Like the Peloton Bike, you get access to a ton of running and nonrunning classes with your $39 monthly subscription and excellent motivational tools like performance rankings so you can compete with other participants in real time.  The not-so-good stuff At nearly $4,000, the Tread is extremely expensive. Tack on the $39 monthly fee and you better be sure you’ll use this treadmill (a lot) before you buy.  Read my full review of the Peloton Tread. See it at Pelotonlast_img read more

Generating multiphoton quantum states on silicon

first_img Explore further Secure information transmission over 500m fiber links based on quantum technologies In a recent study now published in Light: Science & Applications, Ming Zhang, Lan-Tian Feng and an interdisciplinary team of researchers at the departments of quantum information, quantum physics and modern optical instrumentation in China, detailed a new technique to generate photon-pairs for use in quantum devices. In the study, they used a method known as four-wave mixing to allow three electromagnetic fields to interact and produce a fourth field. The team created the quantum states in a silicon nanophotonic spiral waveguide to produce bright, tunable, stable and scalable multiphoton quantum states. The technology is comparable with the existing fiber and integrated circuit manufacturing processes to pave the way to engineer a range of new generation photonic quantum technologies for applications in quantum communication, computation and imaging. The multiphoton quantum sources detailed in the work will play a critical role to improve the existing understanding of quantum information. Characterization of biphoton polarization-entangled states. (a) and (b) are twofold coincidences as a function of the idler polarizer angle when the signal polarizer angle was kept at 0° (red) and 45° (black), respectively. The error bar was obtained from the square root of the experimental data. (c) and (d) give the real (Re) and imaginary (Im) parts of the ideal density matrix and the measured density matrix of the biphoton entangled state from frequency channels ±5, respectively. The fidelity was 0.95 ± 0.01, confirming that the generated biphoton quantum state was of high quality and very close to the ideal maximally entangled states. Credit: Light: Science & Applications, doi: 10.1038/s41377-019-0153-y Schematic configuration of the experimental system to generate and characterize the multiphoton quantum state with a silicon nanophotonic waveguide. A pulse erbium-doped fiber laser with a repetition rate of 100 MHz was used as the pump light. After a VOA and a prefilter with a bandwidth of 100 GHz, the pump light was input into a Sagnac loop to generate the polarization-encoding quantum state. A postfilter with a bandwidth of 200 GHz was used to block the pump light. A DWDM filter was used to demultiplex photon pairs into the corresponding frequency channels, and a normal architecture for polarization state tomography was used to ascertain the quality of the entangled states. VOA variable optical attenuator, HWP half waveplate, PBS polarization beam splitter, QWP quarter waveplate, PC polarization controller, SNSPD superconducting nanowire single-photon detector. Credit: Light: Science & Applications, doi: 10.1038/s41377-019-0153-y Zhang et al. constructed the experimental setup in three parts to contain the (1) pump-laser modulator, (2) the photon source and (3) the state analyzer. In the pump-laser modulator they introduced a linearly polarized pulse erbium-doped fiber laser as the pump source with a repetition frequency of 100 MHz and a pulse duration time of 90 femtoseconds (fs). The scientists coordinated the pump light to pass through a 100 GHz bandwidth pre-filter, followed by a polarization controller (PC) and an optical circulator to finally couple into the photon source. They calculated the coherence time of the pulse laser light to be 20 picoseconds (ps) after going through the 100 GHz bandwidth prefilter and the propagation loss in the silicon spiral waveguide was approximately 1 dB/cm. Compared to multiphoton quantum states proposed with previous Spontaneous Four Wave Mixing (SFWM) processes, the present work used a silicon nanowire source with near-zero broadband dispersion. The experimental setup with the silicon nanowire did not demonstrate Raman scattering noise, which therefore greatly enhanced the number of photon pairs generated. Unlike with microresonators, Zhang et al. did not need to tune the operation wavelength in the experimental setup since they used silicon spiral waveguides instead. The scientists used grating couplers to couple-in the pump light and couple-out the generated photon pairs in the setup. As part of the photon source, Zhang et al. used a configuration with a Sagnac interferometer – a popular and self-stabilized scheme to generate polarization-entangled states. The experimental Sagnac interferometer contained two half-wave plates (HWPs), two quarter wave plates (QWPs), a polarization beam splitter (PBS) and the silicon spiral waveguide approximating a length of 1 cm to form a simple structure and compact footprint (170 x 170 µm2). The scientists used the combined HWP and QWP inserted between the PBS and the chip to control optical polarization and maximize the coupling efficiency of a photon pair. In the experiment, the on-chip generated photon pairs (idler and signal photons) could be superposed together in both directions (clockwise and counterclockwise) for output from the Sagnac loop. At this point, the scientists used a dense wavelength-division-multiplexing (DWDM) filter (fiber-optic transmission technique) to separate the signal and idler photons, or demultiplex them. They were thus able to freely select the photon pairs of any combined frequency channel via frequency detuning. The scientists noted that after going through the DWDM filters, the polarization and quantum states of the photon-pairs were unchanged. More information: Ming Zhang et al. Generation of multiphoton quantum states on silicon, Light: Science & Applications (2019). DOI: 10.1038/s41377-019-0153-y Lucia Caspani et al. Integrated sources of photon quantum states based on nonlinear optics, Light: Science & Applications (2017). DOI: 10.1038/lsa.2017.100 Alán Aspuru-Guzik et al. Photonic quantum simulators, Nature Physics (2012). DOI: 10.1038/nphys2253 Yin-Hai Li et al. On-Chip Multiplexed Multiple Entanglement Sources in a Single Silicon Nanowire, Physical Review Applied (2017). DOI: 10.1103/PhysRevApplied.7.064005 In the present work, Zhang et al. generated four-photon polarization encoding quantum states using degenerated spontaneous four-wave mixing (SFWM) in a silicon spiral waveguide. The scientists first demonstrated biphoton Bell entanglement quantum states with high brightness (270 kHz) and a high coincidence to accidental ratio (CAR, approximating 230) at a low pump power (120 µW). Thereafter, using the two biphoton Bell entangled states, Zhang et al generated the four-photon quantum state (with a pump power as low as 600 µW). The scientists projected this quantum product state to form a Greenberger-Horne-Zeilinger (GHz) state (i.e. a state in quantum information theory with at least three subsystems or particles) with 50 percent probability for further use in quantum information applications. Experiment results of two-photon coincidences between different combinations of the selected five pairs of signal-idler channels. Here the pump power injected to the Sagnac loop is 120 μW. The two-photon coincidences were measured for the selected five pairs of signal-idler channels. Credit: Light: Science & Applications, doi: 10.1038/s41377-019-0153-y Schematic diagram of the experimental system to generate and characterize the multiphoton quantum states with a silicon nanophotonic waveguide. The experimental setup contains a (1) pump laser modulator, (2) the photon source and (3) the state analyzer. The scientists used the combined HWP (half-wave plates, red) and QWP (quarter-wave plates, blue) inserted between the PBS (polarization beam splitter, green) and the chip to control optical polarization and maximize the coupling efficiency of a photon pair. Credit: Light: Science & Applications, doi: 10.1038/s41377-019-0153-y Citation: Generating multiphoton quantum states on silicon (2019, May 9) retrieved 18 August 2019 from The scientists generated multiphoton quantum states using a single-silicon nanophotonic waveguide and detected four-photon states with a low pump power of 600 µW to achieve experimental multiphoton quantum interference verified with quantum state tomography. Zhang and Feng et al. recorded the quantum interference visibilities at a value greater than 95 percent with high fidelity. The multiphoton quantum source is fully compatible with on-chip processes of quantum manipulation and quantum detection to form large-scale quantum photonic integrated circuits (QPICs). The work has significant potential for multiphoton quantum research. Multiphoton quantum sources are critical to build several practical platforms for quantum communication, computation, simulation and metrology. Physicists have made great efforts to realize high quality, bright and scalable multiphoton quantum states in previous work, to activate powerful quantum technologies by multiplexing several biphoton sources to generate eight-photon and 10-photon entanglement. However, the efficacy of such multiplexing systems decreased with the number of entangled photons. At present, quantum photonic integrated circuits (QPCIs) and silicon-on-insulator (SOI) technology remain promising to realize high quality photon-pair sources. Silicon has several advantages as a substrate to implement QPICs, which include third-order optical nonlinearity of the material and ultra-high refraction index contrast for applications as SOI nanophotonic waveguides. Silicon is also compatible with complementary metal-oxide semiconductor (CMOS) processes—attractive for large-scale photonic integration. While these advantages have allowed physicists to experimentally realize biphoton quantum sources, multiphoton quantum states on silicon still remain to be generated and reported. Zhang et al. then characterized the quality of the biphoton state generated in the experiment. For this, they selected five pairs of frequency channels used in the study to generate the signal and idler photons, to test the stability of the system. They measured the two-photon coincidences between different combinations of signal and idler channels and showed that the crosstalk was negligible for most frequency channels. After calculating the maximal polarization-entangled Bell state, they confirmed the existence of entanglement and high fidelity of the biphoton state. They credited the high coincidence-to-accidental ratio (CAR) observed to the ultralow nonlinear noise in the setup; necessary to generate multiphoton entanglement for further quantum information applications. For complete characterization, the scientists connducted quantum state tomography to reconstruct the experimental state density matrix architecture by completing multiple measurements of the relevant quantum state. The results confirmed that the generated biphoton quantum states are of high quality to approach the ideal maximally entangled states. The scientists then conveniently generated multiphoton entangled states by multiplexing the biphoton states in different frequency channels. They obtained a fourfold coincidence rate and showed the observed four-photon state as the tensor product of two biphoton entangled Bell states. The four-photon interference patterns agreed with the theoretical prediction, to unfold differently from the previously observed biphoton entangled states. Based on the outcomes of a clear interference pattern and high interference visibilities, Zhang et al. verified the feasibility of the experimental technique to establish on-chip multiphoton quantum states. As before, the scientists obtained quantum state tomography of the four-photon quantum states to reconstruct the density matrix, yielding satisfactory results for further quantum information applications. In this way, the scientists experimentally demonstrated the generation of four-photon quantum states using a silicon nanophotonic spiral waveguide. Zhang et al. aim to improve the photon collection efficiency to increase the number of entangled photons in the system in the future. The multiphoton quantum state source developed in the study is compatible with contemporary fiber and chip-scale architectures for large scale production. Zhang et al. therefore propose the integration of the attractive features as a scalable and practical platform for future quantum processing applications. Characterization of four-photon polarization-encoding quantum states. (a) and (b) are fourfold coincidences as a function of the idler polarizer angles when the signal polarizer angles were kept at 0° (red) and 45° (black), respectively. The error bar was obtained from the square root of the experimental data. (c) and (d) give the real (Re) and imaginary (Im) parts of the ideal density matrix and the measured density matrix of the four-photon quantum states, respectively. The fidelity was 0.78 ± 0.02, which is completely satisfactory for further quantum information processing. Credit: Light: Science & Applications, doi: 10.1038/s41377-019-0153-y Journal information: Light: Science & Applications © 2019 Science X Network , Nature Physics This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more