Atom-light hybrid quantum gyroscope

Abstract

A new type of atom-light hybrid quantum gyroscope (ALHQG) is proposed due to its high rotation sensitivity. It consists of an optical Sagnac loop to couple rotation rate and an atomic ensemble as quantum beam splitter/recombiner (QBS/C) based on atomic Raman amplification process to realize the splitting and recombination of the optical wave and the atomic spin wave. The rotation sensitivity can be enhanced by the quantum correlation between Sagnac loop and QBS/C. The optimal working condition is investigated to achieve the best sensitivity. The numerical results show that the rotation sensitivity can beat the standard quantum limit (SQL) in ideal condition. Even in the presence of the attenuation under practical condition, the best sensitivity of the ALHQG can still beat the SQL and is better than that of a fiber optic gyroscope (FOG). Such an ALHQG could be practically applied for modern inertial navigation system.

arXiv comment5 figures

References in corpus (10)

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• A table-top high-sensitivity gyroscope based on slow light and cavity enhanced photon drag
• Enhanced phase sensitivity in a Mach-Zehnder interferometer via photon recycling
• Nonreciprocity enhanced Quantum Gyroscopes based on Surface Acoustic Waves