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Disorder-protected quantum state transmission through helical coupled-resonator waveguides

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Title
Disorder-protected quantum state transmission through helical coupled-resonator waveguides
Author(s)
JungYun Han; Andrey A. Sukhorukov; Daniel Leykam
Publication Date
2020-10
Journal
Photonics Research, v.8, no.10, pp.B15 - B24
Publisher
OPTICAL SOC AMER
Abstract
© 2020 Chinese Laser Press. We predict the preservation of temporal indistinguishability of photons propagating through helical coupledresonator optical waveguides (H-CROWs). H-CROWs exhibit a pseudospin-momentum locked dispersion, which we show suppresses on-site disorder-induced backscattering and group velocity fluctuations. We simulate numerically the propagation of two-photon wave packets, demonstrating that they exhibit almost perfect Hong–Ou–Mandel dip visibility and then can preserve their quantum coherence even in the presence of moderate disorder, in contrast with regular CROWs, which are highly sensitive to disorder. As indistinguishability is the most fundamental resource of quantum information processing, H-CROWs may find applications for the implementation of robust optical links and delay lines in the emerging quantum photonic communication and computational platforms.
URI
https://pr.ibs.re.kr/handle/8788114/7583
DOI
10.1364/PRJ.399919
ISSN
2327-9125
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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