We evaluate the fundamental performance of a fiber-optic gyroscope (FOG) design that is enhanced by the injection of quantum-optical squeezed vacuum. In the presence of fiber loss, we compute the maximum attainable enhancement over a classical, laser-driven FOG in terms of the rotation estimator variance from a homodyne measurement. We find that currently realizable amounts of single-mode squeezing are sufficient to access the maximum quantitative improvement, but that this gain in rotation sensitivity is limited to a marginal constant factor. We then propose an entanglement-enhanced FOG design that segments a fixed amount of available fiber into multiple fiber interferometers and feeds this sensor array with multi-mode-entangled squeezed vacuum. Our design raises the maximum improvement in sensitivity to an appreciable factor of e ≈ 2:718.
|Original language||English (US)|
|State||Published - Mar 27 2020|
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