21 citations · 53 across the 6 of their papers we have counts for
6 papers
Robust population inversion in three-level systems by composite pulses
Cheng Zhang, Yang Liu, Zhi-Cheng Shi +3
In this work, we exploit the idea of composite pulses to achieve robust population inversion in a three-level quantum system. The scheme is based on the modulation of the coupling…
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…
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…
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…
Gradual partial-collapse theory for ideal nondemolition measurements of qubits in circuit QED
Wei Feng, Cheng Zhang, Zhong Wang +2
The conventional method of qubit measurements in circuit QED is employing the dispersive regime of qubit-cavity coupling, which results in an approximated scheme of quantum nondemo…
Direct measurement of the quantum state of photons in a cavity
Lupei Qin, Zhong Wang, Cheng Zhang +1
We propose a scheme to measure the quantum state of photons in a cavity. The proposal is based on the concept of quantum weak values and applies equally well to both the solid-stat…