16 citations · 27 across the 6 of their papers we have counts for
6 papers · 1 filter
Efficient tomography of quantum-optical Gaussian processes probed with a few coherent states
Xiang-Bin Wang, Zong-Wen Yu, Jia-Zhong Hu +2
An arbitrary quantum-optical process (channel) can be completely characterized by probing it with coherent states using the recently developed coherent-state quantum process tomogr…
Protecting Two-Qubit Quantum States by -Phase Pulses
Jia-Zhong Hu, Xiang-Bin Wang, LC Kwek
We study the state decay of two qubits interacted with a common harmonic oscillator reservoir. There are both decoherence error and the error caused by the amplitude change of the…
Improving quantum entanglement through single-qubit operations
X. -B. Wang, Z. -W. Yu, J. -Z. Hu +1
We show that the entanglement of a bipartite state can be improved and maximized probabilistically through single-qubit operations only. An experiment is proposed and i…
Secure quantum key distribution in an easy way
Jia-Zhong Hu, Xiang-Bin Wang
Secure quantum key distribution can be achieved with an imperfect single-photon source through implementing the decoy-state method. However, security of all those theoretical resul…
Entanglement distribution maximization over one-side Gaussian noisy channel
Xiang-Bin Wang, Zong-Wen Yu, Jia-Zhong Hu
The optimization of entanglement evolution for two-mode Gaussian pure states under one-side Gaussian map is studied. Even there isn't complete information about the one-side Gaussi…
Unified Approach to Universal Cloning and Phase-Covariant Cloning
Jia-Zhong Hu, Zong-Wen Yu, Xiang-Bin Wang
We analyze the problem of approximate quantum cloning when the quantum state is between two latitudes on the Bloch's sphere. We present an analytical formula for the optimized 1-to…