Nanophotonic source of quadrature squeezing via self phase modulation
Nanophotonic source of quadrature squeezing via self phase modulation
Squeezed light is optical beams with variance below the shot noise level. They are a key resource for quantum technologies based on photons, and they can be used to achieve better precision measurements and improve security in quantum key distribution channels and as a fundamental resource for quantum computation. Here, we demonstrate an integrated source of squeezing based on four-wave mixing that requires a single laser pump, measuring 0.45 dB of broadband quadrature squeezing at high frequencies. We identify and verify that the current results are limited by excess noise produced in the chip and propose ways to reduce it. Calculations suggest that an improvement in the optical properties of the chip achievable with existing technology can develop scalable quantum technologies based on light
Cernansky, Robert
8ccb162e-f8ee-4209-a5aa-e9a79e80b919
Politi, Alberto
cf75c0a8-d34d-4cbe-b9d5-e408c0edeeec
October 2020
Cernansky, Robert
8ccb162e-f8ee-4209-a5aa-e9a79e80b919
Politi, Alberto
cf75c0a8-d34d-4cbe-b9d5-e408c0edeeec
Cernansky, Robert and Politi, Alberto
(2020)
Nanophotonic source of quadrature squeezing via self phase modulation.
APL Photonics, 5 (10), [101303].
(doi:10.1063/5.0024341).
Abstract
Squeezed light is optical beams with variance below the shot noise level. They are a key resource for quantum technologies based on photons, and they can be used to achieve better precision measurements and improve security in quantum key distribution channels and as a fundamental resource for quantum computation. Here, we demonstrate an integrated source of squeezing based on four-wave mixing that requires a single laser pump, measuring 0.45 dB of broadband quadrature squeezing at high frequencies. We identify and verify that the current results are limited by excess noise produced in the chip and propose ways to reduce it. Calculations suggest that an improvement in the optical properties of the chip achievable with existing technology can develop scalable quantum technologies based on light
Text
Nanophotonic source of quadrature squeezing via self phase modulation
- Accepted Manuscript
More information
Accepted/In Press date: 25 September 2020
e-pub ahead of print date: 12 October 2020
Published date: October 2020
Additional Information:
Funding Information:
The authors acknowledge the help of Z. Vernon and L. G. Helt for their extremely useful discussions of the origin of the low frequency technical noise and J. C. F. Matthews and R. Slavik for helpful advice. We also acknowledge support from the Southampton Nanofabrication Center. This work was supported by the H2020-FETPROACT2014 Grant QUCHIP (Quantum Simulation on a Photonic Chip; Grant Agreement No. 641039) and EPSRC (Grant No. EP/P003710/1).
Publisher Copyright:
© 2020 Author(s).
Identifiers
Local EPrints ID: 444339
URI: http://eprints.soton.ac.uk/id/eprint/444339
ISSN: 2378-0967
PURE UUID: e8f80535-0617-4e1c-aa37-928c7903311b
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Date deposited: 13 Oct 2020 16:47
Last modified: 17 Mar 2024 03:34
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Author:
Robert Cernansky
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