Single-atom transport in optical conveyor belts: Enhanced shortcuts-to-adiabaticity approach
arXiv:2108.10336 · doi:10.1103/PhysRevA.104.053110
Abstract
Fast and nearly lossless atomic transport, enabled by moving the confining trap, is a prerequisite for many quantum-technology applications. While theoretical studies of this problem have heretofore focussed almost exclusively on simplified scenarios (one-dimensional systems, purely harmonic confining potentials, etc.), we investigate it here in the experimentally relevant setting of a moving optical lattice ({\em optical conveyor belt}). We model single-atom transport in this system by taking fully into account its three-dimensional, anharmonic confining potential. We do so using the established method of shortcuts to adiabaticity (STA), i.e. an inverse-engineering approach based on Lewis-Riesenfeld invariants, as well as its recently proposed modification known as {\em enhanced} STA (eSTA). By combining well-controlled, advanced analytical techniques and the numerical propagation of a time-dependent Schrödinger equation using the Fourier split operator method, we evaluate atom-transport fidelities within both approaches. Being obtained for realistic choices of system parameters, our results are relevant for future experiments with optical conveyor belts. Moreover, they reveal that in the system at hand the eSTA method outperforms its STA counterpart for all but the lowest optical-lattice depths.
arXiv commentfinal, published version
References in corpus (34)
- Many-Body Physics with Individually-Controlled Rydberg Atoms
- Shortcuts to adiabaticity: concepts, methods, and applications
- Synthetic three-dimensional atomic structures assembled atom by atom
- Tunable Cavity Optomechanics with Ultracold Atoms
- Fast atomic transport without vibrational heating
- Fast-forward of adiabatic dynamics in quantum mechanics
- Cavity QED with optically transported atoms
- Optimal trajectories for efficient atomic transport without final excitation
- Coherence properties and quantum state transportation in an optical conveyor belt
- Deterministic loading of individual atoms to a high-finesse optical cavity
- Optimal transport of ultracold atoms in the non-adiabatic regime
- An optical conveyor belt for single neutral atoms
- Grey-molasses optical-tweezer loading: Controlling collisions for scaling atom-array assembly
- Hypersonic Bose-Einstein Condensates in Accelerator Rings
- Atomic Fock State Preparation Using Rydberg Blockade
- Matter-wave interferometers using TAAP rings
- Demonstration of quantum brachistochrones between distant states of an atom
- Submicrometer position control of single trapped neutral atoms
- Incommensurate superfluidity of bosons in a double-well optical lattice
- High-fidelity fast quantum transport with imperfect controls
- Fast transport of mixed-species ion chains within a Paul trap
- Optimal control of the transport of Bose-Einstein condensates with atom chips
- Fast and optimal transport of atoms with non-harmonic traps
- Quantum Control via Enhanced Shortcuts to Adiabaticity
- Realistic Shortcuts to Adiabaticity in Optical Transfer
- Scalable -type entanglement resource in neutral-atom arrays with Rydberg-dressed resonant dipole-dipole interaction
- Conversion from to Greenberger-Horne-Zeilinger states in the Rydberg-blockade regime of neutral-atom systems: Dynamical-symmetry-based approach
- Superfluid drag of two-species Bose-Einstein condensates in optical lattices
- Highly controlled optical transport of cold atoms into a hollow-core fiber
- Speed, retention loss, and motional heating of atoms in an optical conveyor belt
- Smooth bang-bang shortcuts to adiabaticity for atomic transport in a moving harmonic trap
- Fast and robust particle shuttling for quantum science and technology
- Interferometer for force measurement by shortcut-to-adiabatic arms guiding
- Fast bias inversion of a double well without residual particle excitation