8 papers · 1 filter
Effects of losses on the sensitivity of an actively correlated Mach-Zehnder interferometer
Qiang Wang, Gao-Feng Jiao, Zhifei Yu +3
We theoretically studied the quantum Cramér-Rao bound of an actively correlated Mach-Zehnder interferometer (ACMZI), where the quantum Fisher information obtained by the phase-aver…
Nonlinear phase estimation enhanced by an actively correlated Mach-Zehnder interferometer
Gao-Feng Jiao, Keye Zhang, L. Q. Chen +2
A nonlinear phase shift is introduced to a Mach-Zehnder interferometer (MZI), and we present a scheme for enhancing the phase sensitivity. In our scheme, one input port of a standa…
Atom-light hybrid quantum gyroscope
Yuan Wu, Jinxian Guo, Xiaotian Feng +3
A new type of atom-light hybrid quantum gyroscope (ALHQG) is proposed due to its high rotation sensitivity. It consists of an optical Sagnac loop to couple rotation rate and an ato…
Angular displacements estimation enhanced by squeezing and parametric amplification
Gao-Feng Jiao, Qiang Wang, L. Q. Chen +2
We theoretically study the angular displacements estimation based on a modified Mach-Zehnder interferometer (MZI), in which two optical parametric amplifiers (PAs) are introduced i…
A novel two-mode squeezed light based on double-pump phase-matching
Xuan-Jian He, Jun Jia, Gao-Feng Jiao +3
A novel two-mode non-degenerate squeezed light is generated based on a four-wave mixing (4WM) process driven by two pump fields crossing at a small angle. By exchanging the roles o…
Phase estimation for an SU(1,1) interferometer in the presence of phase diffusion and photon losses
Xiu-Ling Hu, Dong Li, L. Q. Chen +3
We theoretically study the quantum Fisher information (QFI) of the SU(1,1) interferometer with phase shifts in two arms taking account of realistic noise effects. A generalized pha…