Fabrizio Sgobba, Danilo Triggiani, Vincenzo Tamma, Paolo De Natale, Gianluca Gagliardi, Saverio Avino, Luigi Santamaria Amato
{"title":"七秒级单光子陀螺仪","authors":"Fabrizio Sgobba, Danilo Triggiani, Vincenzo Tamma, Paolo De Natale, Gianluca Gagliardi, Saverio Avino, Luigi Santamaria Amato","doi":"10.1002/qute.202400166","DOIUrl":null,"url":null,"abstract":"<p>This work presents an all-fiber telecom-range optical gyroscope employing a spontaneous parametric down conversion crystal to produce ultra-low intensity thermal light by tracing-out one of the heralded photons. The prototype exhibits a detection limit on photon delay measurements of 249 zs over a 72 s averaging time and 26 zs in differential delay measurements at <span></span><math>\n <semantics>\n <mrow>\n <mi>t</mi>\n <mo>=</mo>\n <msup>\n <mn>10</mn>\n <mn>4</mn>\n </msup>\n </mrow>\n <annotation>$t=10^4$</annotation>\n </semantics></math> s averaging. The detection scheme proves to be the most resource-efficient possible, saturating <span></span><math>\n <semantics>\n <mrow>\n <mo>></mo>\n <mn>99.5</mn>\n <mo>%</mo>\n </mrow>\n <annotation>$&gt;99.5\\%$</annotation>\n </semantics></math> of the Cramér–Rao bound. These results are groundbreaking in the context of low-photon regime quantum metrology, paving the way to novel experimental configurations to bridge quantum optics with special or general relativity.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":null,"pages":null},"PeriodicalIF":4.4000,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202400166","citationCount":"0","resultStr":"{\"title\":\"Zeptosecond-Scale Single-Photon Gyroscope\",\"authors\":\"Fabrizio Sgobba, Danilo Triggiani, Vincenzo Tamma, Paolo De Natale, Gianluca Gagliardi, Saverio Avino, Luigi Santamaria Amato\",\"doi\":\"10.1002/qute.202400166\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>This work presents an all-fiber telecom-range optical gyroscope employing a spontaneous parametric down conversion crystal to produce ultra-low intensity thermal light by tracing-out one of the heralded photons. The prototype exhibits a detection limit on photon delay measurements of 249 zs over a 72 s averaging time and 26 zs in differential delay measurements at <span></span><math>\\n <semantics>\\n <mrow>\\n <mi>t</mi>\\n <mo>=</mo>\\n <msup>\\n <mn>10</mn>\\n <mn>4</mn>\\n </msup>\\n </mrow>\\n <annotation>$t=10^4$</annotation>\\n </semantics></math> s averaging. The detection scheme proves to be the most resource-efficient possible, saturating <span></span><math>\\n <semantics>\\n <mrow>\\n <mo>></mo>\\n <mn>99.5</mn>\\n <mo>%</mo>\\n </mrow>\\n <annotation>$&gt;99.5\\\\%$</annotation>\\n </semantics></math> of the Cramér–Rao bound. These results are groundbreaking in the context of low-photon regime quantum metrology, paving the way to novel experimental configurations to bridge quantum optics with special or general relativity.</p>\",\"PeriodicalId\":72073,\"journal\":{\"name\":\"Advanced quantum technologies\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2024-07-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202400166\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced quantum technologies\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/qute.202400166\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced quantum technologies","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/qute.202400166","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
This work presents an all-fiber telecom-range optical gyroscope employing a spontaneous parametric down conversion crystal to produce ultra-low intensity thermal light by tracing-out one of the heralded photons. The prototype exhibits a detection limit on photon delay measurements of 249 zs over a 72 s averaging time and 26 zs in differential delay measurements at s averaging. The detection scheme proves to be the most resource-efficient possible, saturating of the Cramér–Rao bound. These results are groundbreaking in the context of low-photon regime quantum metrology, paving the way to novel experimental configurations to bridge quantum optics with special or general relativity.
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