Boosting the sensitivity of high frequency gravitational wave detectors by PT-symmetry
arXiv:2206.13224 · doi:10.1103/PhysRevD.106.082002
Abstract
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 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 3kHz, which indicates the potential of our design for a future search of neutron star merger signals.
13 pages, 15 figures
References in corpus (21)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Advanced Virgo: a 2nd generation interferometric gravitational wave detector
- GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
- Constraining neutron star tidal Love numbers with gravitational wave detectors
- Neutron-star radius constraints from GW170817 and future detections
- Modeling GW170817 based on numerical relativity and its implications
- Spectral properties of the post-merger gravitational-wave signal from binary neutron stars
- Neutron Star Extreme Matter Observatory: A kilohertz-band gravitational-wave detector in the global network
- Evading quantum mechanics
- Observation of Parametric Instability in Advanced LIGO
- Exploring the sensitivity of gravitational wave detectors to neutron star physics
- Point absorbers in Advanced LIGO
- Double optical spring enhancement for gravitational wave detectors
- Gravitational wave detection beyond the standard quantum limit using a negative-mass spin system and virtual rigidity
- Negative optical inertia for enhancing the sensitivity of future gravitational-wave detectors
- Converting the signal-recycling cavity into an unstable optomechanical filter to enhance the detection bandwidth of gravitational-wave detectors
- Detuned Twin-Signal-Recycling for ultra-high precision interferometers
- Towards observing the neutron star collapse with gravitational wave detectors
- Enhancing interferometer sensitivity without sacrificing bandwidth and stability: beyond single-mode and resolved-sideband approximation
- Nondegenerate internal squeezing: an all-optical, loss-resistant quantum technique for gravitational-wave detection
- Direct approach to realising quantum filters for high-precision measurements
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- A Gravitational Wave Detector for Post Merger Neutron Stars: Beyond the Quantum Loss Limit of Michelson Fabry Perot Interferometer
- Achieving the fundamental quantum limit of linear waveform estimation
- Sensing and control scheme for the inteferometer configuration with an L-shaped resonator