RT Journal Article T1 Nonlinear Michelson interferometer for improved quantum metrology A1 Luis Aina, Alfredo A1 Rivas Vargas, Ángel AB 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. PB American Physical Society SN 1050-2947 YR 2015 FD 2015-08-07 LK https://hdl.handle.net/20.500.14352/24185 UL https://hdl.handle.net/20.500.14352/24185 LA eng NO ©2015 American Physical Society. We acknowledge financial support from Spanish Ministerio de Economia y Competitividad Projects No. FIS2012-33152 and No. FIS2012-35583 and from the Comunidad Autonoma de Madrid research consortium QUITEMAD+ Grant No. S2013/ICE-2801. NO Ministerio de Economia y Competitividad (MINECO), España NO Comunidad Autonoma de Madrid DS Docta Complutense RD 20 abr 2025