Energetically constrained co-tunneling of cold atoms

Abstract

We study under-barrier tunneling for a pair of energetically bound bosonic atoms in an optical lattice with a barrier. We identify conditions under which this exotic molecule tunnels as a point particle with the coordinate given by the bound pair center of mass and discuss the atomic co-tunneling beyond this regime. In particular, we quantitatively analyze resonantly enhanced co-tunneling, where two interacting atoms penetrate the barrier with higher probability than a single atom.

15 pages, 7 figures

References in corpus (8)

• Repulsively bound atom pairs in an optical lattice
• Two-particle states in the Hubbard model
• Long-time behavior of many-particle quantum decay
• Nonlinear transport of Bose-Einstein condensates through mesoscopic waveguides
• Fidelity of fermionic atom-number states subjected to tunneling decay
• Two interacting particles in a random potential
• Feshbach Molecules in a One-dimensional Optical Lattice
• Macroscopic Quantum Tunneling of Solitons in Bose-Einstein Condensates

Cited by in corpus (12)

• Fractional Bloch oscillations in photonic lattices
• Exact Quantum Decay of an Interacting Many-Particle System: the Calogero-Sutherland model
• Bound states in the one-dimensional two-particle Hubbard model with an impurity
• NOON States via Quantum Walk of Bound Particles
• Tunneling dynamics of correlated bosons in a double well potential
• Low-energy doublons in the ac-driven two-species Hubbard model
• Escape dynamics of Bose-Hubbard dimer out of a trap
• Klein tunneling of two correlated bosons
• Anti-Newtonian dynamics and self-induced Bloch oscillations of correlated particles
• Few-fermion resonant tunneling and underbarrier trapping in asymmetric potentials
• Chaotic level mixing in a two-band Bose-Hubbard model
• Realizing non-trivial doublon formation using a quantum computer