Single-channel Hadamard gate by exploiting frequency conversion of single-photon Raman scattering in chiral quantum nanophotonics

Zihao Chen; Yao Zhou; Jung-Tsung Shen

doi:10.1117/12.2517090

4 March 2019 Single-channel Hadamard gate by exploiting frequency conversion of single-photon Raman scattering in chiral quantum nanophotonics

Zihao Chen, Yao Zhou, Jung-Tsung Shen

Author Affiliations +

Proceedings Volume 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII; 109330Z (2019) https://doi.org/10.1117/12.2517090
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

To enhance the spatial utility of typical two-port Hadamard gate, we propose a novel single-channel scheme through frequency conversion in Λ-atom-mediated single-photon Raman scattering process in chiral quantum nanophotonics. We demonstrate faithful and efficient gate operations, and quantitatively analyze gate performance. Moreover, by manipulating photon-emitter coupling and frequency detuning, it is confirmed that an arbitrary unitary single-qubit operations are achieved in the presented configuration, including most representative single-qubit Hadamard, X, Z, S, and T gates. Due to the advent of directional emission techniques, the chiral condition is readily experimentally feasible. In addition, we further propose an alternative N-type atom architecture to perform Hadamard operations that are enabled by hyperfine structure in the strong-coupling regime.

Citation Download Citation

Zihao Chen, Yao Zhou, and Jung-Tsung Shen "Single-channel Hadamard gate by exploiting frequency conversion of single-photon Raman scattering in chiral quantum nanophotonics", Proc. SPIE 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII, 109330Z (4 March 2019); https://doi.org/10.1117/12.2517090

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