Work

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

Year: 2015

Type: article

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 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.

Source: Scientific Reports

DOI: 10.1038/srep10005

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

Institutions: East China University of Science and Technology, Macquarie University, Fujian Normal University

Language: English

Topic: Quantum optics and atomic interactions

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,690

Funder: Fundamental Research Funds for the Central Universities