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arXiv · 2405.10154

Quantum CZ Gate based on Single Gradient Metasurface

Qi Liu·Yu Tian·Zhaohua Tian·Guixin Li·Xi-Feng Ren·Qihuang Gong·Ying Gu
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Abstract

We propose a scheme to realize quantum controlled-Z (CZ) gates through single gradient metasurface. Using its unique parallel beam-splitting feature, i.e., a series of connected beam splitters with the same splitting ratio, one metasurface can support a CZ gate, several independent CZ gates, or a cascaded CZ gates. Taking advantage of the input polarization determined output path-locking feature, both polarization-encoded and path-encoded CZ gates can be demonstrated on the same metasurface, which further improves the integration level of quantum devices. Our research paves the way for integrating quantum logical function through the metasurface.

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Qi Liu, Yu Tian, Zhaohua Tian, Guixin Li, Xi-Feng Ren, Qihuang Gong, Ying Gu. 2024-05-16. Quantum CZ Gate based on Single Gradient Metasurface. https://arxiv.org/abs/2405.10154

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