Quantum stirring as a sensitive probe of 1D superfluidity
arXiv:0902.1231 · doi:10.1103/PhysRevB.79.172505
Abstract
We propose quantum stirring with a laser beam as a probe of superfluid behavior for a strongly interacting one-dimensional Bose gas confined to a ring. Within the Luttinger liquid theory framework, we calculate the fraction of stirred particles per period as a function of the stirring velocity, the interaction strength and the coupling between the stirring beam and the bosons. The fraction of stirred particles allows to probe superfluidity of the system. We find that it crosses over at a critical velocity, lower than the sound one, from a characteristic power law at high velocities to a constant at low velocities. Some experimental issues on quantum stirring in ring-trapped condensates are discussed.
4 pages, 2 figures
References in corpus (11)
- Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
- Bosonizing one-dimensional cold atomic gases
- Bose-Einstein condensation in a circular waveguide
- Motion of a heavy impurity through a Bose-Einstein condensate
- Momentum spectroscopy of 1D phase fluctuations in Bose-Einstein condensates
- Stationary and non-stationary fluid flow of a Bose-Einstein condensate through a penetrable barrier
- A large magnetic storage ring for Bose-Einstein condensates
- Breakdown of superfluidity of an atom laser past an obstacle
- Evidence of Luttinger liquid behavior in one-dimensional dipolar quantum gases
- Nanoampere pumping of Cooper pairs
- Adiabatic charge and spin transport in interacting quantum wires
Cited by in corpus (6)
- Optimal Persistent Currents for Interacting Bosons on a Ring with a Gauge Field
- Theory of superfluidity and drag force in the one-dimensional Bose gas
- Interacting atomic interferometry for rotation sensing approaching the Heisenberg Limit
- Static and dynamic phases of a Tonks-Girardeau gas in an optical lattice
- Backscattering off a driven Rashba impurity at the helical edge
- Mesoscopic electron transport and atomic gases, a review of Frank W. J. Hekking's scientific work