@inproceedings{caf9616ff6a94ed0b93d7a288437ed61,
title = "Single-channel Hadamard gate by exploiting frequency conversion of single-photon Raman scattering in chiral quantum nanophotonics",
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.",
keywords = "chiral coupling, frequency conversion, Hadamard gate, N-type atom, quantum computing, quantum nanophotonics, S gate, single-photon Raman scattering, T gate, waveguide QED, X gate, Z gate, {\"E}-type atom",
author = "Zihao Chen and Yao Zhou and Shen, {Jung Tsung}",
note = "Publisher Copyright: {\textcopyright} 2019 SPIE.; Advances in Photonics of Quantum Computing, Memory, and Communication XII 2019 ; Conference date: 05-02-2019 Through 07-02-2019",
year = "2019",
doi = "10.1117/12.2517090",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Hemmer, {Philip R.} and Migdall, {Alan L.} and {Ul Hasan}, Zameer",
booktitle = "Advances in Photonics of Quantum Computing, Memory, and Communication XII",
}