Universal linear optics
Jacques Carolan,Chris Harrold,Chris Sparrow,Chris Sparrow,Enrique Martin-Lopez,Nicholas Russell,Joshua W. Silverstone,Peter Shadbolt,Nobuyuki Matsuda,Manabu Oguma,Mikitaka Itoh,Graham D. Marshall,Mark G. Thompson,Jonathan C. F. Matthews,Toshikazu Hashimoto,Jeremy L. O'Brien,Anthony Laing +16 more
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TLDR
In this paper, a sixmode universal system consisting of a cascade of 15 Mach-Zehnder interferometers with 30 thermo-optic phase shifters integrated into a single photonic chip was demonstrated.Abstract:
Linear optics underpins fundamental tests of quantum mechanics and quantum technologies. We demonstrate a single reprogrammable optical circuit that is sufficient to implement all possible linear optical protocols up to the size of that circuit. Our six-mode universal system consists of a cascade of 15 Mach-Zehnder interferometers with 30 thermo-optic phase shifters integrated into a single photonic chip that is electrically and optically interfaced for arbitrary setting of all phase shifters, input of up to six photons, and their measurement with a 12-single-photon detector system. We programmed this system to implement heralded quantum logic and entangling gates, boson sampling with verification tests, and six-dimensional complex Hadamards. We implemented 100 Haar random unitaries with an average fidelity of 0.999 ± 0.001. Our system can be rapidly reprogrammed to implement these and any other linear optical protocol, pointing the way to applications across fundamental science and quantum technologies.read more
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Journal ArticleDOI
Reconfigurable Photonics on a Glass Chip
I. V. Dyakonov,Ivan Pogorelov,I. B. Bobrov,A. A. Kalinkin,Stanislav Straupe,Sergei P. Kulik,Pavel Dyakonov,Stanislav A. Evlashin +7 more
TL;DR: In this paper, a femtosecond-laser-writing technology for creating programmable photonic circuitry is presented, which demonstrates a less expensive, faster femtocondlaser writing technology.
Journal ArticleDOI
Self-calibrating programmable photonic integrated circuits
Xingyuan Xu,Guanghui Ren,Timothy Feleppa,Xu Feng Liu,Andreas Boes,Arnan Mitchell,Arthur J. Lowery +6 more
Journal ArticleDOI
A universal fully reconfigurable 12-mode quantum photonic processor
Caterina Taballione,Reinier van der Meer,Hendrik Joannes Snijders,Peter Hooijschuur,Jörn P. Epping,Michiel de Goede,Ben Kassenberg,Pim Venderbosch,Chris Toebes,Hans van den Vlekkert,Pepijn W. H. Pinkse,Jelmer J. Renema +11 more
TL;DR: In this paper, a 12-mode fully tunable linear interferometer with all-to-all mode coupling based on stoichiometric silicon nitride waveguides is presented.
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Driven quantum dynamics: will it blend?
TL;DR: In this paper, the authors consider a more physically motivated way of generating random evolutions by exploiting the many-body dynamics of a quantum system driven with stochastic external pulses, and show that any fully controllable system converges to a unitary q-design in the long-time limit.
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Advances in Silicon Quantum Photonics
Jeremy C. Adcock,Jueming Bao,Yulin Chi,Xiaojiong Chen,Davide Bacco,Qihuang Gong,Leif Katsuo Oxenløwe,Jianwei Wang,Yunhong Ding +8 more
TL;DR: The aim is the development of scalability on the platform, to point the way to ever-closer integration, toward silicon quantum photonic systems-on-a-chip.
References
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Book
Quantum Computation and Quantum Information
TL;DR: In this article, the quantum Fourier transform and its application in quantum information theory is discussed, and distance measures for quantum information are defined. And quantum error-correction and entropy and information are discussed.
Quantum Computation and Quantum Information
TL;DR: This chapter discusses quantum information theory, public-key cryptography and the RSA cryptosystem, and the proof of Lieb's theorem.
Journal ArticleDOI
A scheme for efficient quantum computation with linear optics.
TL;DR: It is shown that efficient quantum computation is possible using only beam splitters, phase shifters, single photon sources and photo-detectors and are robust against errors from photon loss and detector inefficiency.
Journal ArticleDOI
Measurement of subpicosecond time intervals between two photons by interference.
TL;DR: A fourth-order interference technique has been used to measure the time intervals between two photons, and by implication the length of the photon wave packet, produced in the process of parametric down-conversion.