4 papers
Nonreciprocal Dispersive Coupling for Quantum Sensing
Dong Xie, Chunling Xu
Dispersive coupling is widely utilized for quantum information readout. Most prior studies have concentrated on reciprocal dispersive coupling. Here, we further construct nonrecipr…
Super-Heisenberg Scaling Using Nonlinear Quantum Scrambling
Dong Xie, Chunling Xu
Super-Heisenberg scaling, which scales as with in terms of the number of particles or in terms of the evolution time , is better than Heisenberg s…
Gravimetry enhanced by nonreciprocal optomechanical coupling
Dong Xie, Chunling Xu
We explore how to measure the gravitational acceleration by using a dissipative optomechanical cavity. What is quite different from the conventional measurement methods is that we…
Dispersive Qubit Readout of Temperature
Dong Xie, Chunling Xu
Squeezed light can exponentially increase the signal-to-noise ratio (SNR) of dispersive qubit readout, especially using a combination of injected external squeezing (IES) and intra…