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00925njm 22002777a 4500 dc Luis Aina, Alfredo author Rivas Vargas, Ángel author 2015-08-07 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. 1050-2947 10.1103/PhysRevA.92.022104 https://hdl.handle.net/20.500.14352/24185 http://dx.doi.org/10.1103/PhysRevA.92.022104 http://journals.aps.org/ Nonlinear Michelson interferometer for improved quantum metrology