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Gravitational wave detection with optical lattice atomic clocks | | Shimon Kolkowitz
; Igor Pikovski
; Nicholas Langellier
; Mikhail D. Lukin
; Ronald L. Walsworth
; Jun Ye
; | | Date: |
6 Jun 2016 | | Abstract: | We propose a space-based gravitational wave detector consisting of two
spatially separated, drag-free satellites sharing ultra-stable optical laser
light over a single baseline. Each satellite contains an optical lattice atomic
clock, which serves as a sensitive, narrowband detector of the local frequency
of the shared laser light. A synchronized two-clock comparison between the
satellites will be sensitive to the effective Doppler shifts induced by
incident gravitational waves (GWs) at a level competitive with other proposed
space-based GW detectors, while providing complementary features. The detected
signal is a differential frequency shift of the shared laser light due to the
relative velocity of the satellites, rather than a phase shift arising from the
relative satellite positions, and the detection window can be tuned through the
control sequence applied to the atoms’ internal states. This scheme enables the
detection of GWs from continuous, spectrally narrow sources, such as compact
binary inspirals, with frequencies ranging from ~3 mHz - 10 Hz without loss of
sensitivity, thereby bridging the detection gap between space-based and
terrestrial GW detectors. Our proposed GW detector employs just two satellites,
is compatible with integration with an optical interferometric detector, and
requires only realistic improvements to existing ground-based clock and laser
technologies. | | Source: | arXiv, 1606.1859 | | Services: | Forum | Review | PDF | Favorites | |
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