Controlled Transport between Fermi Superfluids Through a Quantum Point Contact
arXiv:1712.07125 · doi:10.1103/PhysRevA.98.041601
Abstract
Recent advances in experimental techniques allow one to create a quantum point contact between two Fermi superfluids in cold atomic gases with a tunable transmission coefficient. In this Letter we propose that three distinct behaviors of charge transports between two Fermi superfluids can be realized in this single setup, which are the multiple Andreev reflection, the self-trapping and the Josephson oscillation. We investigate the dynamics of atom number difference between two reservoirs for different initial conditions and different transmission coefficients, and present a coherent picture of how the crossover between different regimes takes place. Our results can now be directly verified in current experimental system.
References in corpus (11)
- Observation of Quantized Conductance in Neutral Matter
- Observing the Drop of Resistance in the Flow of a Superfluid Fermi Gas
- Connecting dissipation and phase slips in a Josephson junction between fermionic superfluids
- Band and correlated insulators of cold fermions in a mesoscopic lattice
- Observation of quantum-limited spin transport in strongly interacting two-dimensional Fermi gases
- A scanning gate microscope for cold atomic gases
- Anomalous conductances in an ultracold quantum wire
- Point-contact tunneling involving low-dimensional spin-triplet superconductors
- Keldysh study of point-contact tunneling between superconductors
- Anomalous Conductance of a strongly interacting Fermi Gas through a Quantum Point Contact
- Fluctuation Effects on the Transport Properties of Unitary Fermi Gases
Cited by in corpus (15)
- Quantum thermodynamic devices: from theoretical proposals to experimental reality
- Atomtronic circuits: from many-body physics to quantum technologies
- Superfluid signatures in a dissipative quantum point contact
- Nonlinear transport in the presence of a local dissipation
- Perspective on new implementations of atomtronic circuits
- Comparative study for two-terminal transport through a lossy one-dimensional quantum wire
- DC transport in a dissipative superconducting quantum point contact
- Analytic approach to transport in superconducting junctions with arbitrary carrier density
- Bosonic superfluid transport in a quantum point contact
- Multi-Particle Tunneling Transport at Strongly-Correlated Interfaces
- Giant Enhancement of the Thermo-Particle Transport Figure of Merit and Breakdown of the Wiedemann-Franz Law in Unitary Fermi Gases
- Proposed Fermi-surface reservoir-engineering and application to realizing unconventional Fermi superfluids in a driven-dissipative non-equilibrium Fermi gas
- Nonequilibrium noise as a probe of pair-tunneling transport in the BCS--BEC Crossover
- Irreversible entropy transport enhanced by fermionic superfluidity
- Tunneling Hamiltonian analysis of DC Josephson currents in a weakly-interacting Bose-Einstein condensate