Transport Enhancement of Irregular Optical Lattices with Polychromatic Amplitude Modulation

Abstract

We demonstrate that the transport characteristics of deep optical lattices with one or multiple off-resonant external energy offsets can be greatly-enhanced by modulating the lattice depth in an exotic way. We derive effective stationary models for our proposed modulation schemes in the strongly interacting limit, where only one particle can occupy any given site. Afterwards we discuss the modifications necessary to recover transport when more than one particle may occupy the lattice sites. For the specific five-site lattices discussed, we numerically predict transport gains for ranging from $4.7\times 10^6$ to $9.8\times 10^8$.

11 pages, 8 figures, 1 table, accepted for publication in the New Journal of Physics

References in corpus (9)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Experimental realisation of the topological Haldane model
• Observation of the Meissner effect with ultracold atoms in bosonic ladders
• Hysteresis in a quantized, superfluid atomtronic circuit
• Non-Abelian gauge fields and topological insulators in shaken optical lattices
• Observation of photon-assisted tunneling in optical lattices
• Spectroscopy of ultracold atoms by periodic lattice modulations
• Photon-assisted tunneling in optical lattices: Ballistic transport of interacting boson pairs
• Excitation of atoms in an optical lattice driven by polychromatic amplitude modulation

Cited by in corpus (2)

• Advances in atomtronics
• Selective population of a large-angular-momentum state in an optical lattice