Quantum communications with compressed decoherence using bright squeezed light
被引:4
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作者:
Hong, Fang-Yu
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机构:
Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210008, Peoples R ChinaNanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210008, Peoples R China
Hong, Fang-Yu
[1
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Xiong, Shi-Jie
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机构:Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210008, Peoples R China
Xiong, Shi-Jie
机构:
[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210008, Peoples R China
We propose a scheme for long-distance distribution of quantum entanglement in which the entanglement between qubits at intermediate stations of the channel is established by using bright light pulses in squeezed states coupled to the qubits in cavities with a weak dispersive interaction. The fidelity of the entanglement between qubits at the neighbor stations (10 km apart from each other) obtained by postselection through the balanced homodyne detection of 7 dB squeezed pulses can reach F=0.99 without using entanglement purification, at the same time, the probability of successful generation of entanglement is 0.34.