Noisy quantum gyroscope
- URL: http://arxiv.org/abs/2201.10934v2
- Date: Wed, 25 Jan 2023 03:38:57 GMT
- Title: Noisy quantum gyroscope
- Authors: Lin Jiao, Jun-Hong An
- Abstract summary: Existing quantum gyroscope schemes suffer severe deterioration under the influence of decoherence.
We propose a quantum gyroscope scheme breaking through the constraint of the no-go theorem.
- Score: 3.2452821874053366
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Gyroscope for rotation sensing plays a key role in inertial navigation
systems. Developing more precise gyroscopes than the conventional ones bounded
by classical shot-noise limit by using quantum resources has attracted much
attention. However, existing quantum gyroscope schemes suffer severe
deterioration under the influence of decoherence, which is called the no-go
theorem of noisy metrology. Here, by using two quantized optical fields as
quantum probe, we propose a quantum gyroscope scheme breaking through the
constraint of the no-go theorem. Our exact analysis of the non-Markovian noise
reveals that both the evolution time as a resource in enhancing the sensitivity
and the achieved super-Heisenberg limit in the noiseless case are
asymptotically recoverable when each optical field forms a bound state with its
environment. The result provides a guideline for realizing high-precision
rotation sensing in realistic noisy environments.
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