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Squeezed dual-comb spectroscopy.

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Title: Squeezed dual-comb spectroscopy.
Authors: Herman, Daniel I. (AUTHOR), Walsh, Mathieu (AUTHOR), Kreider, Molly Kate (AUTHOR), Lordi, Noah (AUTHOR), Tsao, Eugene J. (AUTHOR), Lind, Alexander J. (AUTHOR), Heyrich, Matthew (AUTHOR), Combes, Joshua (AUTHOR), Genest, Jérôme (AUTHOR), Diddams, Scott A. (AUTHOR)
Source: Science (pre-March 2025). 2/7/2025, Vol. 387 Issue 6734, p653-658. 6p. 7 Color Photographs.
Subjects: Kerr electro-optical effect, Continuous wave lasers, Frequency combs, Quantum noise, Quantum mechanics, Squeezed light
Abstract: Optical frequency combs have enabled distinct advantages in broadband, high-resolution spectroscopy and precision interferometry. However, quantum mechanics ultimately limits the metrological precision achievable with laser frequency combs. Quantum squeezing has led to substantial measurement improvements with continuous wave lasers, but experiments demonstrating metrological advantage with squeezed combs are less developed. Using the Kerr effect in nonlinear optical fiber, a 1-gigahertz frequency comb centered at 1560 nanometers is amplitude-squeezed by >3 decibels (dB) over a 2.5-terahertz bandwidth. Dual-comb interferometry yields mode-resolved spectroscopy of hydrogen sulfide gas with a signal-to-noise ratio nearly 3 dB beyond the shot-noise limit. The quantum noise reduction leads to a twofold quantum speedup in the determination of gas concentration, with implications for high-speed measurements of multiple species in dynamic chemical environments. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science 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: Psychology and Behavioral Sciences Collection
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Squeezed dual-comb spectroscopy.
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  Data: <searchLink fieldCode="AR" term="%22Herman%2C+Daniel+I%2E%22">Herman, Daniel I.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Walsh%2C+Mathieu%22">Walsh, Mathieu</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kreider%2C+Molly+Kate%22">Kreider, Molly Kate</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lordi%2C+Noah%22">Lordi, Noah</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tsao%2C+Eugene+J%2E%22">Tsao, Eugene J.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lind%2C+Alexander+J%2E%22">Lind, Alexander J.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Heyrich%2C+Matthew%22">Heyrich, Matthew</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Combes%2C+Joshua%22">Combes, Joshua</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Genest%2C+Jérôme%22">Genest, Jérôme</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Diddams%2C+Scott+A%2E%22">Diddams, Scott A.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 2/7/2025, Vol. 387 Issue 6734, p653-658. 6p. 7 Color Photographs.
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  Data: <searchLink fieldCode="DE" term="%22Kerr+electro-optical+effect%22">Kerr electro-optical effect</searchLink><br /><searchLink fieldCode="DE" term="%22Continuous+wave+lasers%22">Continuous wave lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Frequency+combs%22">Frequency combs</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+noise%22">Quantum noise</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+mechanics%22">Quantum mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Squeezed+light%22">Squeezed light</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Optical frequency combs have enabled distinct advantages in broadband, high-resolution spectroscopy and precision interferometry. However, quantum mechanics ultimately limits the metrological precision achievable with laser frequency combs. Quantum squeezing has led to substantial measurement improvements with continuous wave lasers, but experiments demonstrating metrological advantage with squeezed combs are less developed. Using the Kerr effect in nonlinear optical fiber, a 1-gigahertz frequency comb centered at 1560 nanometers is amplitude-squeezed by >3 decibels (dB) over a 2.5-terahertz bandwidth. Dual-comb interferometry yields mode-resolved spectroscopy of hydrogen sulfide gas with a signal-to-noise ratio nearly 3 dB beyond the shot-noise limit. The quantum noise reduction leads to a twofold quantum speedup in the determination of gas concentration, with implications for high-speed measurements of multiple species in dynamic chemical environments. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=182816089
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        Value: 10.1126/science.ads6292
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 6
        StartPage: 653
    Subjects:
      – SubjectFull: Kerr electro-optical effect
        Type: general
      – SubjectFull: Continuous wave lasers
        Type: general
      – SubjectFull: Frequency combs
        Type: general
      – SubjectFull: Quantum noise
        Type: general
      – SubjectFull: Quantum mechanics
        Type: general
      – SubjectFull: Squeezed light
        Type: general
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      – TitleFull: Squeezed dual-comb spectroscopy.
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              M: 02
              Text: 2/7/2025
              Type: published
              Y: 2025
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