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arXiv · 2010.05276

Broadening the high sensitivity range of squeezing-assisted interferometers by means of two-channel detection

Gaurav Shukla·Dariya Salykina·Gaetano Frascella·Devendra Kumar Mishra·Maria V. Chekhova·Farid Ya. Khalili
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Abstract

For a squeezing-enhanced SU(2) interferometer, we theoretically investigate the possibility to broaden the phase range of sub-shot-noise sensitivity. We show that this goal can be achieved by implementing detection in both output ports, with the optimal combination of the detectors outputs, leading to a phase sensitivity independent of the interferometer operation point. Provided that each detector is preceded by a phase-sensitive amplifier, this sensitivity could be also tolerant to the detection loss.

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Gaurav Shukla, Dariya Salykina, Gaetano Frascella, Devendra Kumar Mishra, Maria V. Chekhova, Farid Ya. Khalili. 2020-10-11. Broadening the high sensitivity range of squeezing-assisted interferometers by means of two-channel detection. https://doi.org/10.1364/oe.413391

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