Shi-Hai Wei, Liu Yuan, Ruiming Zhang, Xing-Yin Wei, Lixin Peng, Kun-Yue Shi, Xueying Zhang, Bo Jing, Guangwei Deng, Hai-Zhi Song
{"title":"Crosstalk-constrained multimode capacity of spectro-temporally multiplexed quantum memories.","authors":"Shi-Hai Wei, Liu Yuan, Ruiming Zhang, Xing-Yin Wei, Lixin Peng, Kun-Yue Shi, Xueying Zhang, Bo Jing, Guangwei Deng, Hai-Zhi Song","doi":"10.1364/OL.614273","DOIUrl":null,"url":null,"abstract":"<p><p>The time-bandwidth product (TBP) commonly characterizes the multimode capability of optical quantum memories. However, overlap between neighboring spectral and temporal modes causes crosstalk, reducing fidelity and the number of usable modes. Here, we develop a Gaussian crosstalk model for spectro-temporally multiplexed quantum memories and derive the maximum usable multimode capacity under a given fidelity requirement. For Fourier-transform-limited Gaussian photons, the multimode capacity can be expressed analytically in terms of the TBP, the required fidelity, and the timing jitter. For unit intrinsic fidelity and zero jitter, the multimode capacity is approximately 0.827, 0.628, and 0.399 times the TBP for fidelities of 0.90, 0.95, and 0.99, respectively. Timing jitter further reduces the achievable multimode capacity. These results provide a simple framework for estimating the usable multimode capacity of multiplexed quantum memories.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 20","pages":"5770-5773"},"PeriodicalIF":3.3000,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.614273","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/9/21 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
The time-bandwidth product (TBP) commonly characterizes the multimode capability of optical quantum memories. However, overlap between neighboring spectral and temporal modes causes crosstalk, reducing fidelity and the number of usable modes. Here, we develop a Gaussian crosstalk model for spectro-temporally multiplexed quantum memories and derive the maximum usable multimode capacity under a given fidelity requirement. For Fourier-transform-limited Gaussian photons, the multimode capacity can be expressed analytically in terms of the TBP, the required fidelity, and the timing jitter. For unit intrinsic fidelity and zero jitter, the multimode capacity is approximately 0.827, 0.628, and 0.399 times the TBP for fidelities of 0.90, 0.95, and 0.99, respectively. Timing jitter further reduces the achievable multimode capacity. These results provide a simple framework for estimating the usable multimode capacity of multiplexed quantum memories.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
