Topologically protected synthesizing of Fock states in a circuit QED architecture

IF 2.5 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Physica Status Solidi-Rapid Research Letters Pub Date : 2024-03-16 DOI:10.1002/pssr.202300478

Wei Xin, Xiang-min Yu, Kun Zhou, Shaoxiong Li, Yang Yu

引用次数: 0

Abstract

The preparation of Fock states is important for quantum information storage and processing. Here we present a two‐step protocol with topological protection for multi‐photon Fock states synthesizing in a circuit QED architecture. Due to photon number‐dependent vacuum Rabi splitting, the dynamics of the Jaynes‐Cummings ladder in the resonant regime can be equivalent to a spin‐1/2 chain while a multi‐frequency microwave pulse is applied. Based on the topologically assisted quantum state transfer technique, multi‐photon Fock states can be conditionally generated. Our method significantly reduces the complexity of experimental manipulation compared with previous multi‐step methods and is more robust as a result of topological protection. Furthermore, the protocol indicates that the circuit QED architecture could potentially provide a platform to explore the exotic phase in condensed matter.This article is protected by copyright. All rights reserved.

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电路 QED 架构中受拓扑保护的福克态合成

Fock 态的制备对于量子信息的存储和处理非常重要。在这里，我们提出了一种在电路 QED 架构中合成多光子 Fock 态的具有拓扑保护功能的两步协议。由于光子数依赖于真空拉比分裂，当应用多频微波脉冲时，杰恩-康明斯阶梯在共振机制下的动力学可以等同于自旋-1/2 链。基于拓扑辅助量子态转移技术，可以有条件地产生多光子福克态。与以往的多步骤方法相比，我们的方法大大降低了实验操作的复杂性，并且由于拓扑保护而更加稳健。此外，该协议还表明，电路 QED 架构有可能为探索凝聚态物质中的奇异相提供一个平台。本文受版权保护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physica Status Solidi-Rapid Research Letters 物理-材料科学：综合

CiteScore

5.20

自引率

3.60%

发文量

208

审稿时长

1.4 months

期刊介绍： Physica status solidi (RRL) - Rapid Research Letters was designed to offer extremely fast publication times and is currently one of the fastest double peer-reviewed publication media in solid state and materials physics. Average times are 11 days from submission to first editorial decision, and 12 days from acceptance to online publication. It communicates important findings with a high degree of novelty and need for express publication, as well as other results of immediate interest to the solid-state physics and materials science community. Published Letters require approval by at least two independent reviewers. The journal covers topics such as preparation, structure and simulation of advanced materials, theoretical and experimental investigations of the atomistic and electronic structure, optical, magnetic, superconducting, ferroelectric and other properties of solids, nanostructures and low-dimensional systems as well as device applications. Rapid Research Letters particularly invites papers from interdisciplinary and emerging new areas of research.