Hamiltonian ratchets with ultra-cold atoms
Jiating Ni, Siamak Dadras, Wa Kun Lam, Rajendra K. Shrestha, Mark, Sadgrove, Sandro Wimberger, Gil S. Summy
TL;DR
This paper reviews quantum-resonance ratchets with ultra-cold atoms, focusing on their optimization, stability near resonance, and potential applications in quantum walks and interferometry.
Contribution
It provides a comprehensive review of quantum-resonance ratchets, emphasizing optimization techniques and exploring their stability and future applications.
Findings
Optimization of ratchets using complex initial states
Analysis of stability near resonance conditions
Potential applications in quantum walks and interferometry
Abstract
Quantum-resonance ratchets have been realized over the last ten years for the production of directed currents of atoms. These non-dissipative systems are based on the interaction of a Bose-Einstein condensate with an optical standing wave potential to produce a current of atoms in momentum space. In this paper we provide a review of the important features of these ratchets with a particular emphasis on their optimization using more complex initial states. We also examine their stability close to resonance conditions of the kicking. Finally we discuss the way in which these ratchets may pave the way for applications in quantum (random) walks and matter-wave interferometry.
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