Exposing Gravitational Waves below the Quantum Shot Noise
arXiv:2205.14197 · doi:10.1103/PhysRevD.106.063017
Abstract
The sensitivities of ground-based gravitational-wave (GW) detectors are limited by quantum shot noise at a few hundred Hertz and above. Nonetheless, one can use a quantum-correlation technique proposed by Martynov, et al. [Phys. Rev. A 95, 043831 (2017)] to remove the expectation value of the shot noise, thereby exposing underlying classical signals in the cross spectrum formed by cross-correlating the two outputs in a GW interferometer's anti-symmetric port. We explore here the prospects and analyze the sensitivity of using quantum correlation to detect astrophysical GW signals. Conceptually, this technique is similar to the correlation of two different GW detectors as it utilizes the fact that a GW signal will be correlated in the two outputs but the shot noise will be uncorrelated. Quantum correlation also has its unique advantages as it requires only a single interferometer to make a detection. Therefore, quantum correlation could increase the duty cycle, enhance the search efficiency, and enable the detection of highly polarized signals. In particular, we show that quantum correlation could be especially useful for detecting post-merger remnants of binary neutron stars with both short () and intermediate () durations and setting upper limits on continuous emissions from unknown pulsars.
12 pages, 4 figures, to be submitted to PRD
References in corpus (31)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Advanced Virgo: a 2nd generation interferometric gravitational wave detector
- Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
- Advanced LIGO
- GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
- Exploring the Sensitivity of Next Generation Gravitational Wave Detectors
- Scientific Objectives of Einstein Telescope
- BayesWave: Bayesian Inference for Gravitational Wave Bursts and Instrument Glitches
- Sensitivity and Performance of the Advanced LIGO Detectors in the Third Observing Run
- Spectral properties of the post-merger gravitational-wave signal from binary neutron stars
- Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817
- A Horizon Study for Cosmic Explorer: Science, Observatories, and Community
- New binary black hole mergers in the LIGO--Virgo O3a data
- Using Full Information When Computing Modes of Post-Newtonian Waveforms From Inspiralling Compact Binaries in Circular Orbit
- The BayesWave analysis pipeline in the era of gravitational wave observations
- Eccentric, nonspinning, inspiral, Gaussian-process merger approximant for the detection and characterization of eccentric binary black hole mergers
- Characterization of systematic error in Advanced LIGO calibration
- Singular value decomposition applied to compact binary coalescence gravitational-wave signals
- Exploring the sensitivity of gravitational wave detectors to neutron star physics
- Method for all-sky searches of continuous gravitational wave signals using the frequency-Hough transform
- Frequency-Dependent Squeezed Vacuum Source for Broadband Quantum Noise Reduction in Advanced Gravitational-Wave Detectors
- All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO and Advanced Virgo O3 data
- Binary Neutron Star Mergers and Short Gamma-Ray Bursts: Effects of Magnetic Field Orientation, Equation of State, and Mass Ratio
- Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers
- All-sky search for short gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run
- All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems
- All-sky Search for Continuous Gravitational Waves from Isolated Neutron Stars in the Early O3 LIGO Data
- Early warning of coalescing neutron-star and neutron-star-black-hole binaries from nonstationary noise background using neural networks
- Search strategies for long gravitational-wave transients: hidden Markov model tracking and seedless clustering
- Characterization of systematic error in Advanced LIGO calibration in the second half of O3
- Incorporating information from LIGO data quality streams into the PyCBC search for gravitational waves