Non-adiabatic losses from radio-frequency dressed cold atom traps: beyond the Landau-Zener model

Abstract

Non-adiabatic decay rates for a radio-frequency dressed magnetic trap are calculated using Fermi's Golden Rule: that is, we examine the probability for a single atom to make transitions out of the dressed trap and into a continuum in the adiabatic limit, where perturbation theory can be applied. This approach can be compared to the semi-classical Landau-Zener theory of a resonant dressed atom trap, and it is found that, when carefully implemented, the Landau-Zener theory overestimates the rate of non-adiabatic spin flip transitions in the adiabatic limit. This indicates that care is needed when determining requirements on trap Rabi frequency and magnetic field gradient in practical atom traps.

References in corpus (9)

• Matter-wave interferometry in a double well on an atom chip
• Ultracold atoms confined in rf-induced two-dimensional trapping potentials
• Atom trapping and two-dimensional Bose-Einstein condensates in field-induced adiabatic potentials
• Ultracold atoms in radio-frequency-dressed potentials beyond the rotating wave approximation
• Nano-Scale `Dark State' Optical Potentials for Cold Atoms
• A two-dimensional quantum gas in a magnetic trap
• Majorana spin-flip transitions in a magnetic trap
• Trapping and cooling of rf-dressed atoms in a quadrupole magnetic field
• RF dressed atoms beyond the linear Zeeman effect

Cited by in corpus (18)

• Generalized Hydrodynamics in the 1D Bose gas: theory and experiments
• Observation of ultracold atomic bubbles in orbital microgravity
• Shell potentials for microgravity Bose-Einstein condensates
• Ultracold atoms in multiple-radiofrequency dressed adiabatic potentials
• Perspective on Quantum Bubbles in Microgravity
• Reaction-limited quantum reaction-diffusion dynamics
• Quantum Many-Body Physics with Ultracold Polar Molecules: Nanostructured Potential Barriers and Interactions
• Large-scale universality in quantum reaction-diffusion from Keldysh field theory
• Decoherence-free radiofrequency dressed subspaces
• Quantum Simulations with Bilayer 2D Bose Gases in Multiple-RF-dressed Potentials
• Solid-state magnetic traps and lattices
• Nonadiabatic decay of metastable states on coupled linear potentials
• Inelastic losses in radiofrequency-dressed traps for ultracold atoms
• Expansion of a quantum gas in a shell trap
• Kinetics of Quantum Reaction-Diffusion systems
• Hidden facts in Landau-Zener transitions revealed by the Riccati Equation
• Reaction-diffusion dynamics of the weakly dissipative Fermi gas
• A versatile ring trap for quantum gases