A weighted combination of two heterodyne signals with opposite beat frequencies cancels clock jitter in optical cavity links for space GW telescopes while preserving the gravitational wave signal and improving shot noise SNR by sqrt(2).
Nakamuraet al.,Pre-DECIGO can get the smoking gun to decide the astrophysical or cosmological origin of GW150914-like binary black holes
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Clock Noise Cancellation in Heterodyne Links between Optical Cavities for Space-Borne Gravitational-Wave Telescopes
A weighted combination of two heterodyne signals with opposite beat frequencies cancels clock jitter in optical cavity links for space GW telescopes while preserving the gravitational wave signal and improving shot noise SNR by sqrt(2).