Quantum controlled-phase-flip gate between a flying optical photon and a Rydberg atomic ensemble

Y. M. Hao, G. W. Lin*, Keyu Xia, X. M. Lin, Y. P. Niu, S. Q. Gong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)
12 Downloads (Pure)

Abstract

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 π 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.

Original languageEnglish
Article number10005
Pages (from-to)1-7
Number of pages7
JournalScientific Reports
Volume5
DOIs
Publication statusPublished - 12 May 2015

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