121 citations · 514 across the 50 of their papers we have counts for
5 papers · 1 filter
On the response of quantum linear systems to single photon input fields
Guofeng Zhang, Matthew R. James
The purpose of this paper is to extend linear systems and signals theory to include single photon quantum signals. We provide detailed results describing how quantum linear systems…
Coherent Feedback Control of Linear Quantum Optical Systems via Squeezing and Phase Shift
Guofeng Zhang, Heung Wing Joseph Lee, Bo Huang +1
The purpose of this paper is to present a theoretic and numerical study of utilizing squeezing and phase shift in coherent feedback control of linear quantum optical systems. A qua…
Geometric measure of entanglement of multipartite mixed states
Shenglong Hu, Liqun Qi, Yisheng Song +1
The geometric measure of entanglement of a pure state, defined by its distance to the set of pure separable states, is extended to multipartite mixed states. We characterize the ne…
The geometric measure of entanglement of pure states with nonnegative amplitudes and the spectral theory of nonnegative tensors
Shenglong Hu, Liqun Qi, Guofeng Zhang
The geometric measure of entanglement for a symmetric pure state with nonnegative amplitudes has attracted much attention. On the other hand, the spectral theory of nonnegative ten…
Quantum Feedback Networks and Control: A Brief Survey
Guofeng Zhang, Matthew R. James
The purpose of this paper is to provide a brief review of some recent developments in quantum feedback networks and control. A quantum feedback network (QFN) is an interconnected s…