%0 Journal Article %D 2023 %T Accelerating Progress Towards Practical Quantum Advantage: The Quantum Technology Demonstration Project Roadmap %A Paul Alsing %A Phil Battle %A Joshua C. Bienfang %A Tammie Borders %A Tina Brower-Thomas %A Lincoln D. Carr %A Fred Chong %A Siamak Dadras %A Brian DeMarco %A Ivan Deutsch %A Eden Figueroa %A Danna Freedman %A Henry Everitt %A Daniel Gauthier %A Ezekiel Johnston-Halperin %A Jungsang Kim %A Mackillo Kira %A Prem Kumar %A Paul Kwiat %A John Lekki %A Anjul Loiacono %A Marko Lončar %A John R. Lowell %A Mikhail Lukin %A Celia Merzbacher %A Aaron Miller %A Christopher Monroe %A Johannes Pollanen %A David Pappas %A Michael Raymer %A Ronald Reano %A Brandon Rodenburg %A Martin Savage %A Thomas Searles %A Jun Ye %X

Quantum information science and technology (QIST) is a critical and emerging technology with the potential for enormous world impact and is currently invested in by over 40 nations. To bring these large-scale investments to fruition and bridge the lower technology readiness levels (TRLs) of fundamental research at universities to the high TRLs necessary to realize the promise of practical quantum advantage accessible to industry and the public, we present a roadmap for Quantum Technology Demonstration Projects (QTDPs). Such QTDPs, focused on intermediate TRLs, are large-scale public-private partnerships with a high probability of translation from laboratory to practice. They create technology demonstrating a clear 'quantum advantage' for science breakthroughs that are user-motivated and will provide access to a broad and diverse community of scientific users. Successful implementation of a program of QTDPs will have large positive economic impacts.

%8 3/20/2023 %G eng %U https://arxiv.org/abs/2210.14757 %0 Journal Article %J Nat. Phys. %D 2021 %T Device-independent Randomness Expansion with Entangled Photons %A Lynden K. Shalm %A Yanbao Zhang %A Joshua C. Bienfang %A Collin Schlager %A Martin J. Stevens %A Michael D. Mazurek %A Carlos Abellán %A Waldimar Amaya %A Morgan W. Mitchell %A Mohammad A. Alhejji %A Honghao Fu %A Joel Ornstein %A Richard P. Mirin %A Sae Woo Nam %A Emanuel Knill %X

With the growing availability of experimental loophole-free Bell tests, it has become possible to implement a new class of device-independent random number generators whose output can be certified to be uniformly random without requiring a detailed model of the quantum devices used. However, all of these experiments require many input bits in order to certify a small number of output bits, and it is an outstanding challenge to develop a system that generates more randomness than is used. Here, we devise a device-independent spot-checking protocol which uses only uniform bits as input. Implemented with a photonic loophole-free Bell test, we can produce 24% more certified output bits (1,181,264,237) than consumed input bits (953,301,640), which is 5 orders of magnitude more efficient than our previous work [arXiv:1812.07786]. The experiment ran for 91.0 hours, creating randomness at an average rate of 3606 bits/s with a soundness error bounded by 5.7×10−7 in the presence of classical side information. Our system will allow for greater trust in public sources of randomness, such as randomness beacons, and the protocols may one day enable high-quality sources of private randomness as the device footprint shrinks.

%B Nat. Phys. %8 01/28/2021 %G eng %U https://arxiv.org/abs/1912.11158 %R https://doi.org/10.1038/s41567-020-01153-4 %0 Journal Article %J Phys. Rev. Lett. %D 2020 %T Experimental Low-Latency Device-Independent Quantum Randomness %A Yanbao Zhang %A Lynden K. Shalm %A Joshua C. Bienfang %A Martin J. Stevens %A Michael D. Mazurek %A Sae Woo Nam %A Carlos Abellán %A Waldimar Amaya %A Morgan W. Mitchell %A Honghao Fu %A Carl Miller %A Alan Mink %A Emanuel Knill %X

Applications of randomness such as private key generation and public randomness beacons require small blocks of certified random bits on demand. Device-independent quantum random number generators can produce such random bits, but existing quantum-proof protocols and loophole-free implementations suffer from high latency, requiring many hours to produce any random bits. We demonstrate device-independent quantum randomness generation from a loophole-free Bell test with a more efficient quantum-proof protocol, obtaining multiple blocks of 512 bits with an average experiment time of less than 5 min per block and with certified error bounded by 2−64≈5.42×10−20.

%B Phys. Rev. Lett. %V 124 %8 12/24/2019 %G eng %U https://arxiv.org/abs/1812.07786 %N 010505 %R https://doi.org/10.1103/PhysRevLett.124.010505