Broadband quadrature-squeezed vacuum and nonclassical photon number correlations from a nanophotonic device.

Autor:	Vaidya VD; Xanadu, Toronto, ON M5G 2C8, Canada., Morrison B; Xanadu, Toronto, ON M5G 2C8, Canada., Helt LG; Xanadu, Toronto, ON M5G 2C8, Canada., Shahrokshahi R; Xanadu, Toronto, ON M5G 2C8, Canada., Mahler DH; Xanadu, Toronto, ON M5G 2C8, Canada., Collins MJ; Xanadu, Toronto, ON M5G 2C8, Canada., Tan K; Xanadu, Toronto, ON M5G 2C8, Canada., Lavoie J; Xanadu, Toronto, ON M5G 2C8, Canada., Repingon A; Xanadu, Toronto, ON M5G 2C8, Canada., Menotti M; Xanadu, Toronto, ON M5G 2C8, Canada., Quesada N; Xanadu, Toronto, ON M5G 2C8, Canada., Pooser RC; Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA., Lita AE; National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO 80305, USA., Gerrits T; National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO 80305, USA., Nam SW; National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO 80305, USA., Vernon Z; Xanadu, Toronto, ON M5G 2C8, Canada. zach@xanadu.ai.
Jazyk:	angličtina
Zdroj:	Science advances [Sci Adv] 2020 Sep 23; Vol. 6 (39). Date of Electronic Publication: 2020 Sep 23 (Print Publication: 2020).
DOI:	10.1126/sciadv.aba9186
Abstrakt:	We report demonstrations of both quadrature-squeezed vacuum and photon number difference squeezing generated in an integrated nanophotonic device. Squeezed light is generated via strongly driven spontaneous four-wave mixing below threshold in silicon nitride microring resonators. The generated light is characterized with both homodyne detection and direct measurements of photon statistics using photon number-resolving transition-edge sensors. We measure 1.0(1) decibels of broadband quadrature squeezing (~4 decibels inferred on-chip) and 1.5(3) decibels of photon number difference squeezing (~7 decibels inferred on-chip). Nearly single temporal mode operation is achieved, with measured raw unheralded second-order correlations g (2) as high as 1.95(1). Multiphoton events of over 10 photons are directly detected with rates exceeding any previous quantum optical demonstration using integrated nanophotonics. These results will have an enabling impact on scaling continuous variable quantum technology. (Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).)
Databáze:	MEDLINE
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