Phase Sensitivity Improvement in Correlation-Enhanced Nonlinear Interferometers
Xinyun Liang, Zhifei Yu, Chun-Hua Yuan, Weiping Zhang, L. Q. Chen
Abstract
Interferometers are widely used as sensors in precision measurement. Compared with a conventional Mach–Zehnder interferometer, the sensitivity of a correlation-enhanced nonlinear interferometer can break the standard quantum limit. Phase sensitivity plays a significant role in the enhanced performance. In this paper, we review improvement in phase estimation technologies in correlation-enhanced nonlinear interferometers, including SU(1,1) interferometer and SU(1,1)-SU(2) hybrid interferometer, and so on, and the applications in quantum metrology and quantum sensing networks.
Topics & Concepts
Astronomical interferometerInterferometrySensitivity (control systems)Mach–Zehnder interferometerPhysicsQuantum metrologyNonlinear systemQuantum limitOpticsPhase (matter)Interferometric visibilityMetrologyQuantum sensorQuantumElectronic engineeringQuantum computerQuantum mechanicsQuantum networkEngineeringQuantum Information and CryptographyMechanical and Optical ResonatorsPhotonic and Optical Devices