3 papers
quant-ph2020
Estimating a fluctuating magnetic field with a continuously monitored atomic ensemble
Cheng Zhang, Klaus Molmer
We study the problem of estimating a time dependent magnetic field by continuous optical probing of an atomic ensemble. The magnetic field is assumed to follow a stochastic Ornstei…
quant-ph2020
Double-dot interferometer for quantum measurement of Majorana qubits and stabilizers
Kai Zhou, Cheng Zhang, Lupei Qin +1
Motivated by the need of quantum measurement of Majorana qubits and surface-code stabilizers, we analyze the performance of a double-dot interferometer under the influence of envir…
quant-ph2018
Estimation of parameters in circuit QED by continuous quantum measurement
Cheng Zhang, Kai Zhou, Wei Feng +1
Designing high-precision and efficient schemes is of crucial importance for quantum parameter estimation in practice. The estimation scheme based on continuous quantum measurement…