Macroscopic Periodic Tunneling of Fermi Atoms in the BCS-BEC Crossover
arXiv:0711.2141 · doi:10.1103/PhysRevA.77.043609
Abstract
We study the macroscopic quantum tunneling of two weakly-linked superfluids made of interacting fermionic atoms. We derive atomic Josephson junction equations and find that zero-mode and pi-mode frequencies of coherent atomic oscillations depend on the tunneling coefficient and the sound velocity of the superfluid. By considering a superfluid of ^40K atoms, we calculate these oscillation frequencies in the crossover from the Bardeen-Cooper-Schrieffer state of weakly-bound Cooper pairs to the Bose-Einstein Condensate of strongly-bound molecular dimers.
arXiv comment6 pages 3 figures revtex
References in corpus (26)
- Observation of resonance condensation of fermionic atom pairs
- Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
- Quantum Coherent Atomic Tunneling between Two Trapped Bose-Einstein Condensates
- Condensation of Pairs of Fermionic Atoms Near a Feshbach Resonance
- Josephson Junction Arrays with Bose-Einstein Condensates
- Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
- Evidence for Superfluidity in a Resonantly Interacting Fermi Gas
- Collective excitations of a degenerate gas at the BEC-BCS crossover
- Equation of state of a Fermi gas in the BEC-BCS crossover: a quantum Monte Carlo study
- Precision Measurements of Collective Oscillations in the BEC-BCS Crossover
- Bulk and Collective Properties of a Dilute Fermi Gas in the BCS-BEC Crossover
- Critical velocity for superfluid flow across the BEC-BCS crossover
- Collective modes and ballistic expansion of a Fermi gas in the BCS-BEC crossover
- Quantitative comparison between theoretical predictions and experimental results for the BCS-BEC crossover
- Quantum two-level systems in Josephson junctions as naturally formed qubits
- Collective oscillations of a trapped Fermi gas near a Feshbach resonance
- Formation Time of a Fermion Pair Condensate
- Effective Lagrangians for BCS Superconductors at T=0
- Effective action for Superconductors and BCS-Bose crossover
- Condensate Fraction of a Fermi Gas in the BCS-BEC Crossover
- Josephson tunneling between weakly interacting Bose-Einstein condensates
- The Josephson effect throughout the BCS-BEC crossover
- Expansion of a Fermi Cloud in the BCS-BEC Crossover
- Condensate Fraction of a Two-Dimensional Attractive Fermi Gas
- Path integral formulation of the tunneling dynamics of a superfluid Fermi gas in an optical potential
- Josephson effect in superfluid atomic Fermi-gases
Cited by in corpus (32)
- Josephson effect in fermionic superfluids across the BEC-BCS crossover
- Superfluid Bose-Fermi mixture from weak-coupling to unitarity
- Extended Thomas-Fermi Density Functional for the Unitary Fermi Gas
- DC Josephson Effect with Fermi gases in the Bose-Einstein regime
- Spontaneous symmetry breaking of Bose-Fermi mixtures in double-well potentials
- Self-trapping of a Fermi super-fluid in a double-well potential in the BEC-unitarity crossover
- Effective Nonlinear Schrödinger Equations for Cigar-Shaped and Disk-Shaped Fermi Superfluids at Unitarity
- Hydrodynamics of Bose and Fermi superfluids at zero temperature: the superfluid nonlinear Schrodinger equation
- Structure and dynamics of a rotating superfluid Bose-Fermi mixture
- Critical Josephson current in BCS-BEC crossover superfluids
- Macroscopic Quantum Tunneling Escape of Bose-Einstein Condensates
- Low-temperature thermodynamics of the unitary Fermi gas: superfluid fraction, first sound and second sound
- Josephson oscillations and self-trapping of superfluid fermions in a double-well potential
- Dark solitons dynamics and snake instability in superfluid Fermi gases trapped by an anisotropic harmonic potential
- DC and AC Josephson effects with superfluid Fermi atoms across a Feshbach resonance
- Surface Effects in the Unitary Fermi Gas
- Gradient corrections to the local density approximation for trapped superfluid Fermi gases
- Quantum-tunneling dynamics of a spin-polarized Fermi gas in a double-well potential
- Bell Soliton in Ultra-cold Atomic Fermi Gas
- Josephson effect with superfluid fermions in the two-dimensional BCS-BEC crossover
- Interaction-controlled impurity transport in trapped mixtures of ultracold bosons
- Nonequilibrium noise as a probe of pair-tunneling transport in the BCS--BEC Crossover
- Tunneling of polarized fermions in 3D double wells
- Spin-asymmetric Josephson effect
- Dynamics of shock waves in a superfluid unitary Fermi gas
- Goldstone and Higgs Hydrodynamics in the BCS-BEC Crossover
- Crow instability in unitary Fermi gas
- Relative Phase and Josephson Dynamics between Weakly Coupled Richardson Models
- Faraday Waves in strongly interacting superfluids
- Generation of vortex dipoles in superfluid Fermi gas in BCS limit
- Vortex-lattice structures in rotating Bose-Fermi superfluid mixtures
- Densities probabilities of a Bose-Fermi Mixture in 1D Double well potential