Quantum limits of interferometer topologies for gravitational radiation detection
Abstract
In order to expand the astrophysical reach of gravitational wave (GW) detectors, several interferometer topologies have been proposed, in the past, to evade the thermodynamic and quantum mechanical limits in future detectors. In this work, we make a systematic comparison among these topologies by considering their sensitivities and complexities. We numerically optimize their sensitivities by introducing a cost function that tries to maximize the broadband improvement over the sensitivity of current detectors. We find that frequency-dependent squeezed-light injection with a 100 m scale filter cavity yields a good broadband sensitivity, with low complexity, and good robustness against optical loss. This study gives us a guideline for the near-term experimental research programs in enhancing the performance of future GW detectors.
Additional Information
© 2014 IOP Publishing Ltd. Received 24 February 2014, revised 7 July 2014. Accepted for publication 8 July 2014. Published 5 August 2014. We would like to thank our colleagues in the LIGO Scientific Collaborationʼs Advanced Interferometer Configurations working group for fruitful discussions. RXA is supported by NSF grant PHY-0757058. HM, HY, and YC are supported by NSF grants PHY-0555406, PHY-0653653, PHY-0601459, PHY-0956189, PHY-1068881, as well as the David and Barbara Groce startup fund at Caltech.Attached Files
Submitted - 1305.3957v4.pdf
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Additional details
- Eprint ID
- 50181
- DOI
- 10.1088/0264-9381/31/16/165010
- Resolver ID
- CaltechAUTHORS:20141002-143439836
- PHY-0757058
- NSF
- PHY-0555406
- NSF
- PHY-0653653
- NSF
- PHY-0601459
- NSF
- PHY-0956189
- NSF
- PHY-1068881
- NSF
- Caltech David and Barbara Groce startup fund
- Created
-
2014-10-02Created from EPrint's datestamp field
- Updated
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2022-07-12Created from EPrint's last_modified field