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-Chip Nanomechanical Filtering of Quantum-Dot Single-Photon Sources
Xiaoyan Zhou,Ravitej Uppu,Zhe Liu,Camille Papon,Rüdiger Schott,Andreas D. Wieck,Arne Ludwig,Peter Lodahl,Leonardo Midolo +8 more
TL;DR: In this article, an on-chip filter was integrated with quantum dots to achieve high-purity and coherent photon emission from quantum dots embedded in waveguides, without resorting to free-space optics.
Posted Content
Experimental adaptive Bayesian estimation of multiple phases with limited data
Mauro Valeri,Emanuele Polino,Davide Poderini,Ilaria Gianani,Ilaria Gianani,Giacomo Corrielli,Andrea Crespi,Roberto Osellame,Nicolò Spagnolo,Fabio Sciarrino +9 more
TL;DR: In this article, an adaptive Bayesian multiparameter estimation technique tailored to reach optimal performances with very limited data was investigated and implemented experimentally for the first time, and the obtained results show that adaptive strategies can become a viable approach for realistic sensors working with a limited amount of resources.
Journal ArticleDOI
Stability of Self-Configuring Large Multiport Interferometers
TL;DR: In this article , the authors propose a self-configuration scheme for triangular meshes that requires only external detectors and works without prior knowledge of the component imperfections. And they extend this scheme to the rectangular mesh by adding a single array of detectors along the diagonal.
Journal ArticleDOI
Single-photon detection using high-temperature superconductors
Ilya Charaev,Denis A. Bandurin,Anthony Bollinger,I Y Phinney,Ilya Drozdov,Marco Colangelo,Brenden A. Butters,Takashi Taniguchi,X. S. He,Owen Medeiros,Ivan Bozovic,Pablo Jarillo-Herrero,Karl K. Berggren +12 more
TL;DR: In this paper , the authors reported the fabrication of two types of high-temperature superconducting nanowires and observed linear scaling of the photon count rate on the radiation power at the telecommunications wavelength of 1.5 μm and thereby reveal single-photon operation.
Journal ArticleDOI
Programmable Bloch polaritons in graphene.
Lin Xiong,Yutao Li,Minwoo Jung,Carlos Forsythe,Shuai Zhang,Alexander McLeod,Yinan Dong,Song Liu,Frank L. Ruta,Casey Li,Kenji Watanabe,Takashi Taniguchi,Michael M. Fogler,James H. Edgar,Gennady Shvets,Cory Dean,Dimitri Basov +16 more
TL;DR: In this article, surface plasmon polaritons (SPPs) with periodically modulated carrier density were used to control the propagation of the SPPs by dialing the proper gate voltage.
References
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Book
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