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Lunar silicon cavity.

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Title: Lunar silicon cavity.
Authors: Ye, Jun1 Ye@JILA.colorado.edu, Hu, Zoey Z.1, Lewis, Ben1, Zhang, Wei2, Riehle, Fritz3, Sterr, Uwe3, Ni, Yiqi4, Struck, Julian4
Source: Proceedings of the National Academy of Sciences of the United States of America. 5/12/2026, Vol. 123 Issue 19, p1-6. 6p.
Subjects: Optical resonators, Thermal noise, Laser communication systems, General relativity (Physics), Moon, Lunar exploration, Quantum communication
Abstract: The Moon’s permanently shadowed regions (PSRs) are among the coldest places in the Solar System and are expected to become key landing sites for upcoming international space agency missions. Their proximity to peaks of perpetual solar power and potential resource richness makes them prime candidates for lunar exploration and future Moon bases. Here, we propose to deploy a passive, ultrastable optical resonator in these regions that will enable laser systems with unprecedented phase-coherence. The unique physical environment of lunar PSRs greatly benefits the construction of a cryogenic monolithic silicon cavity that exhibits low 10−18 thermal noise-limited stability and coherence time exceeding 1 min, more than a decade better than the current best terrestrial system. Such a stable laser will form an enabling infrastructure for quantum technology in space to serve many applications, including establishing a lunar time standard, building long-baseline optical interferometry, distribution of stable optical signals across networks of satellites, testing general relativity and gravitational physics, and forming the backbone for space-based quantum networks. [ABSTRACT FROM AUTHOR]
Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 193988656
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: <searchLink fieldCode="DE" term="%22Optical+resonators%22">Optical resonators</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+noise%22">Thermal noise</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+communication+systems%22">Laser communication systems</searchLink><br /><searchLink fieldCode="DE" term="%22General+relativity+%28Physics%29%22">General relativity (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Moon%22">Moon</searchLink><br /><searchLink fieldCode="DE" term="%22Lunar+exploration%22">Lunar exploration</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+communication%22">Quantum communication</searchLink>
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  Data: The Moon’s permanently shadowed regions (PSRs) are among the coldest places in the Solar System and are expected to become key landing sites for upcoming international space agency missions. Their proximity to peaks of perpetual solar power and potential resource richness makes them prime candidates for lunar exploration and future Moon bases. Here, we propose to deploy a passive, ultrastable optical resonator in these regions that will enable laser systems with unprecedented phase-coherence. The unique physical environment of lunar PSRs greatly benefits the construction of a cryogenic monolithic silicon cavity that exhibits low 10−18 thermal noise-limited stability and coherence time exceeding 1 min, more than a decade better than the current best terrestrial system. Such a stable laser will form an enabling infrastructure for quantum technology in space to serve many applications, including establishing a lunar time standard, building long-baseline optical interferometry, distribution of stable optical signals across networks of satellites, testing general relativity and gravitational physics, and forming the backbone for space-based quantum networks. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Proceedings of the National Academy of Sciences of the United States of America is the property of National Academy of Sciences and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1073/pnas.2604438123
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        Text: English
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      – SubjectFull: Optical resonators
        Type: general
      – SubjectFull: Thermal noise
        Type: general
      – SubjectFull: Laser communication systems
        Type: general
      – SubjectFull: General relativity (Physics)
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      – SubjectFull: Moon
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      – SubjectFull: Lunar exploration
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      – SubjectFull: Quantum communication
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      – TitleFull: Lunar silicon cavity.
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              M: 05
              Text: 5/12/2026
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              Y: 2026
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