Nondegenerate internal squeezing: an all-optical, loss-resistant quantum technique for gravitational-wave detection
arXiv:2206.06529 · doi:10.1103/PhysRevD.106.L041101
Abstract
The detection of kilohertz-band gravitational waves promises discoveries in astrophysics, exotic matter, and cosmology. To improve the kilohertz quantum noise-limited sensitivity of interferometric gravitational-wave detectors, we investigate nondegenerate internal squeezing: optical parametric oscillation inside the signal-recycling cavity with distinct signal-mode and idler-mode frequencies. We use an analytic Hamiltonian model to show that this stable, all-optical technique is tolerant to decoherence from optical detection loss and that it, with its optimal readout scheme, is feasible for broadband sensitivity enhancement.
v2, 7 pages, 5 figures. Accepted on July 11 2022 as a Letter in Phys. Rev. D
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