Synchronization of Bloch oscillations by a ring cavity

Abstract

We consider Bloch oscillations of ultracold atoms stored in a one-dimensional vertical optical lattice and simultaneously interacting with a unidirectionally pumped optical ring cavity whose vertical arm is collinear with the optical lattice. We find that the feedback provided by the cavity field on the atomic motion synchronizes Bloch oscillations via a mode-locking mechanism, steering the atoms to the lowest Bloch band. It also stabilizes Bloch oscillations against noise, and even suppresses dephasing due to atom-atom interactions. Furthermore, it generates periodic bursts of light emitted into the counter-propagating cavity mode, providing a non-destructive monitor of the atomic dynamics. All these features may be crucial for future improvements of the design of atomic gravimeters based on recording Bloch oscillations.

14 pages, 7 figures

References in corpus (5)

• Long-lived Bloch oscillations with bosonic Sr atoms and application to gravity measurement at micrometer scale
• Control of Interaction-Induced Dephasing of Bloch Oscillations
• Interaction-induced quantum phase revivals and evidence for the transition to the quantum chaotic regime in 1D atomic Bloch oscillations
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• Progress towards a matter wave interferometer for inertial sensing with non-destructive monitoring of Bloch oscillations
• Collision of two self-trapped atomic matter wave packets in an optical ring cavity
• Emergent disorder and sub-ballistic dynamics in quantum simulations of the Ising model using Rydberg atom arrays
• Cavity quantum electrodynamics of continuously monitored Bose-condensed atoms
• Continuous Acceleration Sensing Using Optomechanical Droplets