Quantum controlled-phase-flip gate between a flying optical photon and a Rydberg atomic ensemble.
Quantum controlled-phase-flip gate between a flying optical photon and a Rydberg atomic ensemble.
复制标题
飞行光学光子和里德伯原子系综之间的量子控制相位翻转门
DOI:
10.1038/srep10005
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发表时间:
2015-05-12
影响因子:
4.6
通讯作者:
Gong SQ
中科院分区:
文献类型:
--
作者:
Hao YM;Lin GW;Xia K;Lin XM;Niu YP;Gong SQ
Quantum controlled-phase-flip (CPF) gate between a flying photon qubit and a stationary atomic qubit could allow the linking of distant computational nodes in a quantum network. Here we present a scheme to realize quantum CPF gate between a flying optical photon and an atomic ensemble based on cavity input-output process and Rydberg blockade. When a flying single-photon pulse is reflected off the cavity containing a Rydberg atomic ensemble, the dark resonance and Rydberg blockade induce a conditional phase shift for the photon pulse, thus we can achieve the CPF gate between the photon and the atomic ensemble. Assisted by Rydberg blockade interaction, our scheme works in the N-atoms strong-coupling regime and significantly relaxes the requirement of strong coupling of single atom to photon in the optical cavity.
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