Injection Locking for Spectral Filtering of the Addressing Laser for Optical Qubits in 171Yb+ Ions

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/s11141-025-10349-8

K. P. Galstyan, I. V. Zalivako, D. S. Kryuchkov, N. N. Kolachevsky

{"title":"Injection Locking for Spectral Filtering of the Addressing Laser for Optical Qubits in 171Yb+ Ions","authors":"K. P. Galstyan, I. V. Zalivako, D. S. Kryuchkov, N. N. Kolachevsky","doi":"10.1007/s11141-025-10349-8","DOIUrl":null,"url":null,"abstract":"We demonstrate the implementation of a diode laser with high frequency stability at averaging times of 0.1 s to 100 s and low high-frequency phase noise (up to 5 MHz) to control the quantum state of optical qubits based on 171Yb+ ions. A high-finesse ULE glass optical cavity is used as an external reference to stabilize the laser frequency and as a spectral filter for high-frequency noise. The calculated suppression of laser phase noise by the cavity at a frequency of 1.2 MHz (where the laser noise density before the filtering reaches its maximum) is 49 dB. Injection locking makes it possible to amplify spectrally pure laser light and use it to control the quantum state of qubits. The spectral purity of the slave laser diode emission is studied by measuring the beat signal of the amplified emission relative to the light transmitted through the cavity. It is shown that the phase noise introduced by injection locking does not exceed -70 dBc in a bandwidth of up to 5 MHz, while an output power of up to 30 mW was achieved.","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"67 1","pages":"13 - 22"},"PeriodicalIF":0.8000,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiophysics and Quantum Electronics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11141-025-10349-8","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

We demonstrate the implementation of a diode laser with high frequency stability at averaging times of 0.1 s to 100 s and low high-frequency phase noise (up to 5 MHz) to control the quantum state of optical qubits based on ¹⁷¹Yb⁺ ions. A high-finesse ULE glass optical cavity is used as an external reference to stabilize the laser frequency and as a spectral filter for high-frequency noise. The calculated suppression of laser phase noise by the cavity at a frequency of 1.2 MHz (where the laser noise density before the filtering reaches its maximum) is 49 dB. Injection locking makes it possible to amplify spectrally pure laser light and use it to control the quantum state of qubits. The spectral purity of the slave laser diode emission is studied by measuring the beat signal of the amplified emission relative to the light transmitted through the cavity. It is shown that the phase noise introduced by injection locking does not exceed -70 dBc in a bandwidth of up to 5 MHz, while an output power of up to 30 mW was achieved.

查看原文本刊更多论文

171Yb+离子中光学量子比特寻址激光器光谱滤波的注入锁定

我们演示了一种二极管激光器的实现，该激光器具有平均时间为0.1 s至100 s的高频稳定性和低高频相位噪声（高达5 MHz），用于控制基于171Yb+离子的光学量子比特的量子态。高精细ULE玻璃光学腔被用作稳定激光频率的外部参考和高频噪声的光谱滤波器。计算得到在1.2 MHz频率下（滤波前激光噪声密度达到最大值），腔体对激光相位噪声的抑制为49 dB。注入锁定使得放大光谱纯激光并使用它来控制量子比特的量子态成为可能。通过测量放大后发射的拍频信号相对于通过腔体的光，研究了从型激光二极管发射的光谱纯度。结果表明，在高达5 MHz的带宽下，注入锁引入的相位噪声不超过-70 dBc，而输出功率高达30 mW。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.