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
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
Citations
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Journal ArticleDOI
On the connection between quantum pseudorandomness and quantum hardware assumptions
TL;DR: In this article , the connection between quantum pseudorandomness and quantum hardware assumptions, specifically quantum physical unclonable functions (qPUFs), has been discussed and a sufficient condition (in terms of the diamond norm) that a set of unitaries should have to be a PRU in order to construct a universally unforgeable qPUF was provided.
Posted Content
Multi-core fiber integrated multi-port beamsplitters for quantum information processing
Jaime Cariñe,Gustavo Cañas,Paul Skrzypczyk,Ivan Šupić,Nayda Guerrero,Tania García,L. Pereira,M. A. S. Prosser,Guilherme B. Xavier,Aldo Delgado,Stephen P. Walborn,Daniel Cavalcanti,Gustavo Lima +12 more
TL;DR: In this paper, the authors report on the production of high-quality $N \times N$ (with $N=4,7$) multi-port beamsplitters based on a new scheme for manipulating multi-core optical fibers.
Proceedings ArticleDOI
TuD3.2 - Neuromorphic Silicon Photonics on Foundry and Cryogenic Platforms (Invited)
Alexander N. Tait,Alexander N. Tait,Thomas Ferreira de Lima,Jeffrey M. Shainline,Sonia Buckley,Adam N. McCaughan,Mitchell A. Nahmias,Jeff Chiles,Hsuan-Tung Peng,Heidi B. Miller,Heidi B. Miller,Sae Woo Nam,Richard P. Mirin,Bhavin J. Shastri,Bhavin J. Shastri,Paul R. Prucnal +15 more
TL;DR: This work compares these platforms and summarizes recent experimental results on programmability in photonic neurons and networks using foundry devices and cryogenic devices for silicon photonics.
Journal ArticleDOI
Waveguide-Coupled Deterministic Quantum Light Sources and Post-Growth Engineering Methods for Integrated Photonic Quantum Circuits
TL;DR: In this paper , the authors highlight recent progress in the development of waveguide-coupled deterministic SPSs towards scalable integrated photonic quantum circuits (IPQCs).
Book ChapterDOI
Introduction to Quantum Information
TL;DR: Quantum information science views quantum mechanics as a theory that is fundamentally about information and information processing, and quantum mechanics is a model for information processing.
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.