Speeding up the spatial adiabatic passage of matter waves in optical microtraps by optimal control

Abstract

We numerically investigate the performance of atomic transport in optical microtraps via the so called spatial adiabatic passage technique. Our analysis is carried out by means of optimal control methods, which enable us to determine suitable transport control pulses. We investigate the ultimate limits of the optimal control in speeding up the transport process in a triple well configuration for both a single atomic wave packet and a Bose-Einstein condensate within a regime of experimental parameters achievable with current optical technology.

17 pages, 14 figures

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• Classical and quantum shortcuts to adiabaticity for scale-invariant driving
• Spatial adiabatic passage: a review of recent progress
• Decoherence Models for Discrete-Time Quantum Walks and their Application to Neutral Atom Experiments
• Fast transport, atom sample splitting, and single-atom qubit supply in two-dimensional arrays of optical microtraps
• Time-Optimal Adiabatic-Like Expansion of Bose-Einstein Condensates
• Smooth bang-bang shortcuts to adiabaticity for atomic transport in a moving harmonic trap
• Robustness of Enhanced Shortcuts to Adiabaticity in Lattice Transport
• Compound atom-ion Josephson junction: Effects of finite temperature and ion motion
• Single- and two-qubit quantum gates using superimposed optical lattice potentials
• Optimal control in phase space applied to minimal-time transfer of thermal atoms in optical traps
• Spectral Gap Optimization for Enhanced Adiabatic State Preparation