Interaction blockade for bosons in an asymmetric double well

Abstract

The interaction blockade phenomenon isolates the motion of a single quantum particle within a multi-particle system, in particular for coherent oscillations in and out of a region affected by the blockade mechanism. For identical quantum particles with Bose statistics, the presence of the other particles is still felt by a bosonic stimulation factor $\sqrt{N}$ that speeds up the coherent oscillations, where $N$ is the number of bosons. Here we propose an experiment to observe this enhancement factor with a small number of bosonic atoms. The proposed protocol realises an asymmetric double well potential with multiple optical tweezer laser beams. The ability to adjust bias independently of the coherent coupling between the wells allows the potential to be loaded with different particle numbers while maintaining the resonance condition needed for coherent oscillations. Numerical simulations with up to three bosons in a realistic potential generated by three optical tweezers predict that the relevant avoided level crossing can be probed and the expected bosonic enhancement factor observed.

12 pages, 12 figures

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Cited by in corpus (12)

• Variance of an anisotropic Bose-Einstein condensate
• Superadiabatic driving of a three-level quantum system
• Many-body quantum dynamics of an asymmetric bosonic Josephson junction
• Attractive Bose-Einstein condensates in anharmonic traps: Accurate numerical treatment and the intriguing physics of the variance
• Collisions of solitary waves in condensates beyond mean-field theory
• Many-Body Quantum Dynamics of a Bosonic Josephson Junction with a Finite-Range Interaction
• Many-body effects in a composite bosonic Josephson junction
• Pair-correlation ansatz for the ground state of interacting bosons in an arbitrary one-dimensional potential
• Number-phase uncertainty and quantum dynamics of bosons and fermions interacting with a finite range and large scattering length in a double-well potential
• Many-body effects in the excitations and dynamics of trapped Bose-Einstein condensates
• Dynamical control of particle jets from a driven condensate in a one-dimensional lattice with double-well potential
• Dynamical Phase Transition of two-component Bose-Einstein condensate with nonlinear tunneling in an optomechanical cavity-mediated double-well system