2 citations · 4 across the 5 of their papers we have counts for
8 papers · 1 filter
Classical Inputs and Measurements Enable Phase Sensitivity beyond the Shot-Noise Limit
Jian-Dong Zhang, Zi-Jing Zhang, Long-Zhu Cen +2
Coherent-state-based phase estimation is a fruitful testbed for the field of precision measurements since coherent states are robust to decoherence when compared with exotic quantu…
Conclusive nonlinear phase sensitivity limit for a Mach-Zehnder interferometer with single-mode non-vacuum inputs
Jian-Dong Zhang, Zi-Jing Zhang, Jun-Yan Hu +4
Many works have stated that nonlinear interactions can improve phase sensitivity beyond the Heisenberg limit scaling of with being the mean photon number. This raises som…
A nearly optimal and robust protocol for nonlinear phase estimation using coherent states
Jian-Dong Zhang, Zi-Jing Zhang, Jun-Yan Hu +4
We propose a protocol for the second-order nonlinear phase estimation with a coherent state as input and balanced homodyne detection as measurement strategy. The sensitivity is sub…
Deterministic super-resolved estimation towards angular displacements based upon a Sagnac interferometer and parity measurement
Jian-Dong Zhang, Zi-Jing Zhang, Long-Zhu Cen +2
Super-resolved angular displacement estimation is of crucial significances for quantum information process and optical lithography. Here we report on and experimentally demonstrate…
Sub-Heisenberg-limited nonlinear phase estimation: Parity measurement approaches the quantum Cramér-Rao bound
Jian-Dong Zhang, Zi-Jing Zhang, Long-Zhu Cen +2
Quantum-enhanced phase estimation paves the way to ultra-precision sensing and is of great realistic significance. In this paper we investigate theoretically the estimation of a se…
Angular displacement estimation of Heisenberg scaling: Tunable squeezed Bell state via the enhancement of spin and orbital angular momenta
Jian-Dong Zhang, Zi-Jing Zhang, Long-Zhu Cen +1
We demonstrate an angular momentum-enhanced protocol that permits an angular displacement estimation by using tunable squeezed Bell state and parity detection. We consider the reso…