Improving the phase super-sensitivity of squeezing-assisted interferometers by squeeze factor unbalancing
Manceau M, Khalili F, Chekhova MV (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 19
Article Number: 013014
Journal Issue: 1
Abstract
The sensitivity properties of an SU(1,1) interferometer made of two cascaded parametric amplifiers, as well as of an ordinary SU(2) interferometer preceded by a squeezer and followed by an anti-squeezer, are theoretically investigated. Several possible experimental configurations are considered, such as the absence or presence of a seed beam, direct or homodyne detection scheme. In all cases we formulate the optimal conditions to achieve phase super-sensitivity, meaning a sensitivity overcoming the shot-noise limit. We show that for a given gain of the first parametric amplifier, unbalancing the interferometer by increasing the gain of the second amplifier improves the interferometer properties. In particular, a broader super-sensitivity phase range and a better overall sensitivity can be achieved by gain unbalancing.
Authors with CRIS profile
Involved external institutions
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
Lomonosov Moscow State University / Московский государственный университет имени М.В.Ломоносова
Russian Federation (RU)
Germany (DE)
Lomonosov Moscow State University / Московский государственный университет имени М.В.Ломоносова
Russian Federation (RU)
How to cite
APA:
Manceau, M., Khalili, F., & Chekhova, M.V. (2017). Improving the phase super-sensitivity of squeezing-assisted interferometers by squeeze factor unbalancing. New Journal of Physics, 19(1). https://doi.org/10.1088/1367-2630/aa53d1
MLA:
Manceau, Mathieu, Farid Khalili, and Maria V. Chekhova. "Improving the phase super-sensitivity of squeezing-assisted interferometers by squeeze factor unbalancing." New Journal of Physics 19.1 (2017).
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