Nonadiabatic multichannel dynamics of a spin-orbit coupled condensate

Abstract

We investigate the nonadiabatic dynamics of a driven spin-orbit-coupled Bose-Einstein condensate in both weak and strong driven force. It is shown that the standard Landau-Zener (LZ) tunneling fails in the regime of weak driven force and/or strong spin-orbital coupling, where the full nonadiabatic dynamics requires a new mechanism through multichannel effects. Beyond the semiclassical approach, our numerical and analytical results show an oscillating power-law decay in the quantum limit, different from the exponential decay in the semiclassical limit of the LZ effect. Furthermore, the condensate density profile is found to be dynamically fragmented by the multichannel effects and enhanced by interaction effects. Our work therefore provides a complete picture to understand the nonadiabatic dynamics of a spin-orbit coupled condensate, including various range of driven force and interaction effects through multichannel interference. The experimental indication of these nonadiabatic dynamics is also discussed.

arXiv comment9 pages of RevTex4-1, 8 figures

References in corpus (24)

• Topological Insulators
• $Z_2$ Topological Order and the Quantum Spin Hall Effect
• Universal Intrinsic Spin-Hall Effect
• A spin-orbit coupled Bose-Einstein condensate
• A generic new platform for topological quantum computation using semiconductor heterostructures
• Synthetic magnetic fields for ultracold neutral atoms
• Quantum Coherent Atomic Tunneling between Two Trapped Bose-Einstein Condensates
• Spin-orbit coupling in quantum gases
• Dynamics of a Quantum Phase Transition
• Spin-Orbit Coupled Spinor Bose-Einstein Condensates
• A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential
• Universal adiabatic dynamics across a quantum critical point
• Quantum tri-criticality and phase transitions in spin-orbit coupled Bose-Einstein condensates
• Spin-orbit coupled Bose-Einstein condensates
• A synthetic electric force acting on neutral atoms
• Tunable Landau-Zener transitions in a spin-orbit coupled Bose-Einstein condensate
• Time-resolved measurement of Landau-Zener tunneling in periodic potentials
• Properties of Bose Gases with Raman-Induced Spin-Orbit Coupling
• Stability of ultracold atomic Bose condensates with Rashba spin-orbit coupling against quantum and thermal fluctuations
• Non-adiabacity and large flucutations in a many particle Landau Zener problem
• Towards a Landau-Zener formula for an interacting Bose-Einstein condensate
• Sum rules, dipole oscillation and spin polarizability of a spin-orbit coupled quantum gas
• Condensation transition of ultracold Bose gases with Rashba spin-orbit coupling
• Emergence of a new pair-coherent phase in many-body quenches of repulsive bosons

Cited by in corpus (4)

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• Inverse engineering for fast transport and spin control of spin-orbit-coupled Bose-Einstein condensates in moving harmonic traps
• Tunable nonlinear Landau-Zener tunnelings in a spin-orbit-coupled spinor Bose-Einstein condensate
• Modulation of spin-orbit coupled Bose-Einstein condensates: analytical characterization of acceleration-induced transitions between energy bands