Phase-space geometric Sagnac interferometer for rotation sensing
arXiv:1805.12554 · doi:10.1103/PhysRevA.98.053609
Abstract
Quantum information processing with geometric features of quantum states may provide promising noise-resilient schemes for quantum metrology. In this work, we theoretically explore phase-space geometric Sagnac interferometers with trapped atomic clocks for rotation sensing, which could be intrinsically robust to certain decoherence noises and reach high precision. With the wave guide provided by sweeping ring-traps, we give criteria under which the well-known Sagnac phase is a pure or unconventional geometric phase with respect to the phase space. Furthermore, corresponding schemes for geometric Sagnac interferometers with designed sweeping angular velocity and interrogation time are presented, and the experimental feasibility is also discussed. Such geometric Sagnac interferometers are capable of saturating the ultimate precision limit given by the quantum Cramér-Rao bound.
9 pages, 2 figures
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- Systematic Effects in 2D Trapped Matter-Wave Interferometers
- Enhancing the sensitivity of rotation in a multi-atom Sagnac interferometer
- Two-parameter estimation with three-mode NOON state in a symmetric three-well system
- Controlling the dynamical scale factor in a trapped atom Sagnac Interferometer