{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:28:29Z","timestamp":1760232509679,"version":"build-2065373602"},"reference-count":35,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2022,11,10]],"date-time":"2022-11-10T00:00:00Z","timestamp":1668038400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science and ICT","award":["IITP-2022-2021-0-01810"],"award-info":[{"award-number":["IITP-2022-2021-0-01810"]}]},{"name":"Information Technology Research Center","award":["IITP-2022-2021-0-01810"],"award-info":[{"award-number":["IITP-2022-2021-0-01810"]}]},{"name":"Institute for Information &amp; Communications Technology Planning &amp; Evaluation","award":["IITP-2022-2021-0-01810"],"award-info":[{"award-number":["IITP-2022-2021-0-01810"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In sensors, the highest precision in measurements is given by vacuum fluctuations of quantum mechanics, resulting in a shot noise limit. In a Mach\u2013Zenhder interferometer (MZI), the intensity measurement is correlated with the phase, and thus, the precision measurement (\u0394n) is coupled with the phase resolution (\u0394\u03c6) by the Heisenberg uncertainty principle. Quantum metrology offers a different solution to this precision measurement using nonclassical light such as squeezed light or higher-order entangled-photon pairs, resulting in a smaller \u0394\u03c6 and sub-shot noise limit. Here, we propose another method for the high precision measurement overcoming the diffraction limit in classical physics, where the smaller \u0394\u03c6 is achieved by phase quantization in a coupled interferometric system of coherence de Broglie waves. For a potential application of the proposed method, a quantum ring laser gyroscope is presented as a quantum version of the conventional ring laser gyroscope used for inertial navigation and geodesy.<\/jats:p>","DOI":"10.3390\/s22228687","type":"journal-article","created":{"date-parts":[[2022,11,10]],"date-time":"2022-11-10T21:22:02Z","timestamp":1668115322000},"page":"8687","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["A Quantum Ring Laser Gyroscope Based on Coherence de Broglie Waves"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3609-8508","authenticated-orcid":false,"given":"Byoung S.","family":"Ham","sequence":"first","affiliation":[{"name":"School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Chumdangwagi-ro, Buk-gu, Gwangju 61005, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,11,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"133001","DOI":"10.1103\/PhysRevLett.107.133001","article-title":"Absolute geodetic rotation measurement using atom interferometry","volume":"107","author":"Stockton","year":"2011","journal-title":"Phys. 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