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- Institute of Theoretical PhysicsCN5 papers
- Institute of PhysicsPL4 papers
- Institute of SemiconductorsCN3 papers
- National Astronomical ObservatoriesCN3 papers
- Wuhan Institute of Physics and MathematicsCN3 papers
- China Center of Advanced Science and TechnologyCN2 papers
- Nanjing UniversityCN2 papers
- National Laboratory for SuperconductivityCN2 papers
- University of Science and Technology of ChinaCN2 papers
- Academy of Mathematics and Systems ScienceCN1 paper
- Anhui UniversityCN1 paper
- Beijing Normal UniversityCN1 paper
8 papers · 1 filter
Eavesdropping on the "ping-pong" type quantum communication protocols with invisible photon
Qing-yu Cai
The crucial issue of quantum communication protocol is its security. In this paper, we show that all the deterministic and direct two-way quantum communication protocols, sometimes…
Thermal entanglement in a two-qubit Heisenberg XXZ spin chain under an inhomogeneous magnetic field
Guo-Feng Zhang
The thermal entanglement in a two-qubit Heisenberg \emph{XXZ} spin chain is investigated under an inhomogeneous magnetic field \emph{b}. We show that the ground-state entanglement…
Photon-number-solving Decoy State Quantum Key Distribution
Qing-yu Cai, Yong-gang Tan
In this paper, a photon-number-resolving decoy state quantum key distribution scheme is presented based on recent experimental advancements. A new upper bound on the fraction of co…
Quantum-Classical Transition of Photon-Carnot Engine Induced by Quantum Decoherence
H. T. Quan, P. Zhang, C. P. Sun
We study the physical implementation of the Photon Carnot engine (PCE) based on the cavity QED system [M. Scully et al, Science, \textbf{299}, 862 (2003)]. Here, we analyze two dec…
Stability of Pairwise Entanglement in a Decoherent Environment
Jian-Ming Cai, Zheng-Wei Zhou, Guang-Can Guo
Consider the dynamics of a two-qubit entangled system in the decoherence environment, we investigate the stability of pairwise entanglement under decoherence. We find that for diff…
Entanglement measurement based on two-particle interference
Jian-Ming Cai, Zheng-Wei Zhou, Guang-Can Guo
We propose a simple and realizable method using a two-particle interferometer for the experimental measurement of pairwise entanglement, assuming some prior knowledge about the qua…