3 papers
quant-ph2025
Postselected amplification and photon recycling applied to optical sensing of magnetic fields
Yazhi Niu, Jialin Li, Lupei Qin +1
We apply the combined technique of postselected amplification and photon-recycling to an optical setup of magnetic field precision measurement. We propose two recycling schemes and…
quant-ph2025
Optical phase estimation via homodyne measurement in the presence of saturation effect of photodetectors
Jialin Li, Yazhi Niu, Lupei Qin +1
For optical phase estimation via homodyne measurement, we generalize the theory from detector's linear to nonlinear response regime, which accounts for the presence of saturation e…
quant-ph2024
Postselected amplification applied to Mach-Zehnder-interferometer for phase shift measurement of optical coherent states
J. L. Li, Y. Z. Niu, L. P. Qin +1
We propose a postselected amplification (PSA) scheme for phase shift measurement of optical coherent states when passing through the Mach-Zehnder-interferometer (MZI). Different fr…