58 citations · 238 across the 28 of their papers we have counts for
11 papers · 1 filter
Experimental Measurement of Lower and Upper Bounds of Concurrence for Mixed Quantum States
Xiao-Ling Niu, Yan-Xiao Gong, Jian Li +5
We experimentally measure the lower and upper bounds of concurrence for a set of two-qubit mixed quantum states using photonic systems. The measured concurrence bounds are in agree…
Dependence of the decoherence of polarization states in phase-damping channels on the frequency spectrum envelope of photons
Yan-Xiao Gong, Yong-Sheng Zhang, Yu-Li Dong +3
We consider the decoherence of photons suffering in phase-damping channels. By exploring the evolutions of single-photon polarization states and two-photon polarization-entangled s…
Quantum interference of multimode two-photon pairs with a Michelson interferometer
Fu-Yuan Wang, Bao-Sen Shi, Guang-Can Guo
We experimentally observe the two-photon interference of multimode photon pairs produced by an optical parametric oscillator far below threshold via a michelson interferometer, whi…
Security proof of differential phase shift quantum key distribution in the noiseless case
Yi-Bo Zhao, Chi-Hang Fred Fung, Zheng-Fu Han +1
Differential phase shift quantum key distribution systems have a high potential for achieving high speed key generation. However, its unconditional security proof is still missing,…
Methods for linear optical quantum Fredkin gate
Yan-Xiao Gong, Guang-Can Guo, Timothy C. Ralph
We consider the realization of quantum Fredkin gate with only linear optics and single photons. First we construct a heralded Fredkin gate using four heralded controlled-not (CNOT)…
Robust quantum cryptography with a heralded single-photon source based on the decoy-state method
Qin Wang, Wei Chen, Guilherme Xavier +7
In this paper, we describe a robust quantum cryptography scheme with a heralded single photon source based on the decoy-state method, which has been shown by numerical simulations…