SU(1,1)-type light-atom correlated interferometer

Abstract

The quantum correlation of light and atomic collective excitation can be used to compose an SU(1,1)-type hybrid light-atom interferometer, where one arm in optical SU(1,1) interferometer is replaced by the atomic collective excitation. The phase-sensing probes include not only the photon field but also the atomic collective excitation inside the interferometer. For a coherent squeezed state as the phase-sensing field, the phase sensitivity can approach the Heisenberg limit under the optimal conditions. We also study the effects of the loss of light field and the dephasing of atomic excitation on the phase sensitivity. Since nonlinear processes are involved in this interferometer, they can couple a variety of different waves and form new types of hybrid interferometers, which provides a new method for basic measurement using the hybrid interferometers.

6 pages

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Cited by in corpus (5)

• Optimal and Robust Quantum Metrology Using Interaction-Based Readouts
• Effects of loss on the phase sensitivity with parity detection in an SU(1,1) interferometer
• Effects of losses in the hybrid atom-light interferometer
• A spinor Bose-Einstein condensate phase-sensitive amplifier for SU(1,1) interferometry
• Quantum non-demolition measurement based on an SU(1,1)-SU(2)-concatenated atom-light hybrid interferometer