Quantum Memory in An Eu:YSO Crystal for Polarization and Time-Bin Qubit States

IF 0.8 4区地球科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Radiophysics and Quantum Electronics Pub Date : 2025-01-06 DOI:10.1007/s11141-025-10357-8

R. A. Akhmedzhanov, L. A. Gushchin, I. V. Zelensky, A. A. Kalachev, V. A. Nizov, N. A. Nizov, D. A. Sobgaida

引用次数: 0

Abstract

We demonstrate the storage and readout of the polarization state of light with a memory based on the atomic frequency comb protocol in a ¹⁵³Eu:Y₂SiO₅ crystal, both in the bright-pulse regime and at the single photon level. We reconstruct the χ-matrix of the process corresponding to our quantum memory and demonstrate the recall fidelity for the quantum state of about 80% at the maximum efficiency of about 26%. It is also shown that the quantum memory stores the phase difference between the stored pulses with high fidelity, which is essential for working with time-bin qubits.

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Eu:YSO晶体中偏振态和时间bin量子比特态的量子记忆

我们在153Eu:Y2SiO5晶体中演示了基于原子频率梳协议的光的偏振态存储和读出，无论是在亮脉冲状态还是在单光子水平。我们重建了与量子记忆相对应的过程的χ-矩阵，并证明在最高效率约为26%的情况下，量子态的召回保真度约为80%。研究还表明，量子存储器以高保真度存储脉冲之间的相位差，这对于处理时间bin量子比特至关重要。

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

Radiophysics and Quantum Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-PHYSICS, APPLIED

CiteScore

1.10

自引率

12.50%

发文量

审稿时长

6-12 weeks

期刊介绍： Radiophysics and Quantum Electronics contains the most recent and best Russian research on topics such as: Radio astronomy; Plasma astrophysics; Ionospheric, atmospheric and oceanic physics; Radiowave propagation; Quantum radiophysics; Pphysics of oscillations and waves; Physics of plasmas; Statistical radiophysics; Electrodynamics; Vacuum and plasma electronics; Acoustics; Solid-state electronics. Radiophysics and Quantum Electronics is a translation of the Russian journal Izvestiya VUZ. Radiofizika, published by the Radiophysical Research Institute and N.I. Lobachevsky State University at Nizhnii Novgorod, Russia. The Russian volume-year is published in English beginning in April. All articles are peer-reviewed.