Detection Loss Tolerant Supersensitive Phase Measurement with an SU(1,1) Interferometer
Manceau M, Leuchs G, Khalili F, Chekhova MV (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 119
Article Number: 223604
Journal Issue: 22
DOI: 10.1103/PhysRevLett.119.223604
Abstract
In an unseeded SU(1,1) interferometer composed of two cascaded degenerate parametric amplifiers, with direct detection at the output, we demonstrate a phase sensitivity overcoming the shot noise limit by 2.3 dB. The interferometer is strongly unbalanced, with the parametric gain of the second amplifier exceeding the gain of the first one by a factor of 2, which makes the scheme extremely tolerant to detection losses. We show that by increasing the gain of the second amplifier, the phase supersensitivity of the interferometer can be preserved even with detection losses as high as 80%. This finding can considerably improve the state-of-the-art interferometry, enable sub-shot-noise phase sensitivity in spectral ranges with inefficient detection, and allow extension to quantum imaging.
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., Leuchs, G., Khalili, F., & Chekhova, M.V. (2017). Detection Loss Tolerant Supersensitive Phase Measurement with an SU(1,1) Interferometer. Physical Review Letters, 119(22). https://doi.org/10.1103/PhysRevLett.119.223604
MLA:
Manceau, Mathieu, et al. "Detection Loss Tolerant Supersensitive Phase Measurement with an SU(1,1) Interferometer." Physical Review Letters 119.22 (2017).
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