期刊
OPTICA
卷 7, 期 2, 页码 108-114出版社
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.365028
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资金
- H2020 European Research Council [694683]
- FP7 Ideas: European Research Council [339106]
- H2020 Future and Emerging Technologies [641122]
- Fundacion Cellex
- Ministerio de Economia y Competitividad [SEV-2015-0522, FIS2016-79508-P, SWUQM FIS2017-84114-C2-1-P]
- Generalitat de Catalunya (CERCA) [SGR874]
- Ministerio de Ciencia, Innovacion y Universidades (Ramon y Cajal) [IJCI-2017-33180]
- European Research Council (ERC) [339106] Funding Source: European Research Council (ERC)
Quantum walks are powerful tools for quantum applications and for designing topological systems. Although they are simulated in a variety of platforms, genuine two-dimensional realizations are still challenging. Here we present an innovative approach to the photonic simulation of a quantum walk in two dimensions, where walker positions are encoded in the transverse-wavevector component of a single light beam. The desired dynamics is obtained by means of a sequence of liquid-crystal devices, which apply polarization-dependent transverse kicks to the photons in the beam. We engineer our quantum walk so that it realizes a periodically driven Chern insulator, and we probe its topological features by detecting the anomalous displacement of the photonic wavepacket under the effect of a constant force. Our compact, versatile platform offers exciting prospects for the photonic simulation of two-dimensional quantum dynamics and topological systems. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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