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Boosting the sensitivity of high-frequency gravitational wave detectors using PT-symmetry

Wang, Chuming and Zhao, Chunnong and Li, Xiang and Zhou, Enping and Miao, Haixing and Chen, Yanbei and Ma, Yiqiu (2022) Boosting the sensitivity of high-frequency gravitational wave detectors using PT-symmetry. Physical Review D, 106 (8). Art. No. 082002. ISSN 2470-0010. doi:10.1103/physrevd.106.082002.

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The kilo-Hertz gravitational waves radiated by the neutron star merger remnants carry rich information about the physics of high-density nuclear matter states, and many important astrophysical phenomena such as gamma-ray bursts and black hole formation. Current laser interferometer gravitational wave detectors, such as LIGO, VIRGO, and KAGRA have limited signal response at the kilo-Hertz band, thereby being unable to capture these important physical phenomena. This work proposes an alternative protocol for boosting the sensitivity of the gravitational wave detectors at high frequency by implementing an optomechanical quantum amplifier. With the auxiliary quantum amplifier, this design has the feature of parity-time (PT) symmetry so that the detection band will be significantly broadened within the kilo-Hertz range. In this work, we carefully analyze the quantum-noise-limited sensitivity and the dynamical stability of this design. Based on our protocol, our result shows that the quantum-noise-limited sensitivity will be improved by one order of magnitude around 3 kHz, which indicates the potential of our design for a future search of neutron star merger signals.

Item Type:Article
Related URLs:
URLURL TypeDescription
Wang, Chuming0000-0001-7465-5083
Zhao, Chunnong0000-0001-5825-2401
Li, Xiang0000-0002-3780-7735
Zhou, Enping0000-0002-9624-3749
Miao, Haixing0000-0003-2879-5821
Chen, Yanbei0000-0002-9730-9463
Ma, Yiqiu0000-0001-7192-4874
Additional Information:The authors thank our colleagues AEI-Caltech-MSU MQM discussion group and also Huan Yang for fruitful discussions. Y. M. is supported by the start-up fund provided by Huazhong University of Science and Technology. C. Z. acknowledges the support of Australian Research Council through Grants No. DP170104424 and No. CE170100004. E. Z. is supported by National SKA Program of China No. 2020SKA0120300. X. L. and Y. C.’s research is funded by the Simons Foundation (Grant No. 568762). H. M. acknowledges support from the Birmingham Institute for Gravitational Wave Astronomy and the UK EPSRC New Horizons award (Grant No. EP/V048872/1). H. M. has also been supported by a UK STFC Ernest Rutherford Fellowship (Grant No. ST/M005844/11), and the start-up fund provided by Tsinghua University and the State Key Laboratory of Low Dimensional Quantum Physics of Tsinghua University.
Group:Astronomy Department, TAPIR, Walter Burke Institute for Theoretical Physics
Funding AgencyGrant Number
Huazhong University of Science and TechnologyUNSPECIFIED
Australian Research CouncilDP170104424
Australian Research CouncilCE170100004
Ministry of Science and Technology (China)2020SKA0120300
Simons Foundation568762
Birmingham Institute for Gravitational Wave AstronomyUNSPECIFIED
Engineering and Physical Sciences Research Council (EPSRC)EP/V048872/1
Science and Technology Facilities Council (STFC)ST/M005844/11
Tsinghua UniversityUNSPECIFIED
Issue or Number:8
Record Number:CaltechAUTHORS:20221103-652654100.21
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:117702
Deposited By: Research Services Depository
Deposited On:15 Nov 2022 18:35
Last Modified:15 Nov 2022 18:35

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