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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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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Proceedings ArticleDOI
Quasi-continuously tunable non-volatile photonic switches
TL;DR: In this article , the authors proposed a scheme to achieve reliable quasi-continuous operation in GST optical switches, where several GST patches are controlled in a binary fashion by interleaved PIN-diode doped silicon microheaters.
Proceedings ArticleDOI
Reconfigurable unitary transformations of optical beam arrays
Aldo C. Martinez-Becerril,Siwei Luo,Jordan T. R. Page,Li Liu,Lambert Giner,Raphael A. Abrahão,Jeff S. Lundeen +6 more
TL;DR: In this paper , the authors report an experimental scheme to implement arbitrary transformations on a two-beam array in a reconfigurable setup. But their work is limited to the case of optical spatial modes.
Posted Content
High-speed programmable photonic circuits in a cryogenically compatible, visible-NIR 200 mm CMOS architecture
Mark Dong,Genevieve Clark,Andrew J. Leenheer,Matthew Zimmermann,Daniel Dominguez,Adrian J. Menssen,David Heim,Gerald Gilbert,Dirk Englund,Matt Eichenfield +9 more
TL;DR: In this article, a large-scale programmable many-mode interferometer (PMMIs) platform is presented, which uses aluminum nitride (AlN) piezo-optomechanical actuators coupled to silicon nitride waveguides, enabling low-loss propagation with phase modulation at greater than 100 MHz in visible to near-infrared wavelengths.
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Quantum-state creation in nonlinear-waveguide arrays
TL;DR: In this article , a nonlinear-waveguide array system operating in a regime of nondegenerate-frequency down-converted photons is presented, where one photon acts as a herald for the other photon, which is created in a superposition of the individual waveguide channels.
Journal ArticleDOI
Chip-based photonic graph states
TL;DR: In this article , the authors summarized state-of-the-art experimental progress and advances in chip-based photonic graph states, and proposed an integrated quantum photonics platform for quantum information processing, enabling the generation, manipulation, and measurement of photonic quantum states.
References
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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.