Related papers: Sub-0.1 degree phase locking of a single-photon interferometer

Sub-0.1 degree phase locking of a single-photon interferometer

URL: http://arxiv.org/abs/2212.05852v1
Date: Mon, 12 Dec 2022 12:31:33 GMT
Title: Sub-0.1 degree phase locking of a single-photon interferometer
Authors: Vojt\v{e}ch \v{S}varc, Martina Nov\'akov\'a, Michal Dudka, Miroslav Je\v{z}ek
Abstract summary: A single-photon Mach-Zehnder interferometer is stabilized to a phase precision of 0.05 degrees over 15 hours. The developed phase locking operates continuously, with negligible crosstalk, and for an arbitrary phase of the quantum signal.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: We report a single-photon Mach-Zehnder interferometer stabilized to a phase precision of 0.05 degrees over 15 hours. To lock the phase, we employ an auxiliary reference light at a different wavelength than the quantum signal. The developed phase locking operates continuously, with negligible crosstalk, and for an arbitrary phase of the quantum signal. Moreover, its performance is independent of intensity fluctuations of the reference. Since the presented method can be used in a vast majority of quantum interferometric networks it can significantly improve phase-sensitive applications in quantum communication and quantum metrology.

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