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Related Experiment Videos

Atomic current across an optical lattice.

Alexey V Ponomarev1, Javier Madroñero, Andrey R Kolovsky

  • 1Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, 01187 Dresden, Germany.

Physical Review Letters
|February 21, 2006
PubMed
Summary
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We developed a microscopic model for fermionic atomic currents in optical lattices. Experimentally tunable parameters allow switching between Ohmic and negative differential conductance behaviors.

Area of Science:

  • Atomic physics
  • Condensed matter physics
  • Quantum simulation

Background:

  • Optical lattices are powerful tools for simulating condensed matter systems.
  • Fermionic atoms in optical lattices offer a platform to study quantum phenomena.
  • Understanding transport properties is crucial for quantum device applications.

Purpose of the Study:

  • To develop a microscopic model for collision-induced atomic currents.
  • To investigate the emergence of fermionic atomic current in a tilted optical lattice.
  • To explore the tunability of transport properties, specifically switching between Ohmic and negative differential conductance.

Main Methods:

  • Devised a microscopic model for atomic dynamics.
  • Simulated a fermionic atomic system in a tilted optical lattice.

Related Experiment Videos

  • Analyzed the system's response to experimentally controllable parameters.

    • Main Results:

    • Successfully modeled the emergence of a collision-induced, fermionic atomic current.
    • Demonstrated that tuning microscopic dynamics parameters controls the transport regime.
    • Achieved switching from Ohmic to negative differential conductance.

    Conclusions:

    • The developed model provides insights into quantum transport in optical lattices.
    • Experimental control over microscopic parameters enables manipulation of conductance properties.
    • This work opens avenues for designing novel quantum devices with tunable transport.