Nonlinear Michelson interferometer for improved quantum metrology

Abstract

We examine quantum detection via a Michelson interferometer embedded in a gas with Kerr nonlinearity. This nonlinear interferometer is illuminated by pulses of classical light. This strategy combines the robustness against practical imperfections of classical light with the improvement provided by nonlinear processes. Regarding ultimate quantum limits, we stress that, as a difference with linear schemes, the nonlinearity introduces pulse duration as a new variable into play along with the energy resources.

5 pages, 1 figure. Close to published version

References in corpus (3)

• Quantum limits in optical interferometry
• Generalized Limits for Single-Parameter Quantum Estimation
• Precision quantum metrology and nonclassicality in linear and nonlinear detection schemes

Cited by in corpus (7)

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• Michelson interferometer for measuring temperature
• Nonclassical states of light in a nonlinear Michelson interferometer
• Joint estimation of noise and nonlinearity in Kerr systems