Controlling superfluid flows using dissipative impurities
arXiv:2208.02499 · doi:10.21468/SciPostPhys.14.4.064
Abstract
We propose and analyze a protocol to create and control the superfluid flow in a one dimensional, weakly interacting Bose gas by noisy point contacts coupled to the density of the bosons. Considering first a single contact in a static or moving condensate, we identify three different dynamical phases: I. a linear response regime, where the noise induces a coherent flow in proportion to the strength of the noise accompanied by a counterflow of the normal component of the gas, II. a Zeno regime with suppressed currents and negative differential current to noise characteristics, and III. for a non-vanishing relative velocity, a regime of continuous soliton emission. The velocity of the condensate at the dissipative impurity determines the threshold for Zeno suppression of the current through the point contact, and the onset of the non-stationary regime of soliton "shooting" from the defect. Generalizing to two point contacts in a condensate at rest we show that noise tuning can be employed to control, stabilize or eventually shunt the superfluid transport of particles along the segment which connects them, with perspectives for an atomtronic analogue of a superfluid-current source for studying quantum transport phenomena.
arXiv comment11 pages, 6 figures
References in corpus (53)
- Quantum Transport in Semiconductor Nanostructures
- Non-equilibrium coherence dynamics in one-dimensional Bose gases
- Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
- Bloch oscillations and mean-field effects of Bose-Einstein condensates in 1-D optical lattices
- Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
- Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link
- Metastability and Coherence of Repulsive Polarons in a Strongly Interacting Fermi Mixture
- Observation of Attractive and Repulsive Polarons in a Bose-Einstein Condensate
- Bose polarons in the strongly interacting regime
- Observation of Superfluid Flow in a Bose-Einstein Condensed Gas
- Quantum dynamics of impurities in a 1D Bose gas
- Controlling the dynamics of an open many-body quantum system with localized dissipation
- A thermoelectric heat engine with ultracold atoms
- Conduction of Ultracold Fermions Through a Mesoscopic Channel
- Experimental realization of Josephson junctions for an Atom SQUID
- Repulsive Fermi polarons in a resonant mixture of ultracold Li atoms
- Atomtronics: ultracold atom analogs of electronic devices
- Observation of Quantized Conductance in Neutral Matter
- Non-equilibrium steady-states in a driven-dissipative superfluid
- Superfluid behaviour of a two-dimensional Bose gas
- Universal many-body response of heavy impurities coupled to a Fermi sea
- Quantum transport in ultracold atoms
- The stochastic Gross-Pitaevskii equation II
- Fluctuation-Induced Quantum Zeno Effect
- Dissipation-induced coherent structures in Bose-Einstein condensates
- Quantized conductance through a spin-selective atomic point contact
- Ultracold quantum wires with localized losses: many-body quantum Zeno effect
- Single-atom quantum probes for ultracold gases using nonequilibrium spin dynamics
- Quantized conductance through a dissipative atomic point contact
- The Stochastic Gross-Pitaevskii Equation and some Applications
- Non-Gaussian correlations imprinted by local dephasing in fermionic wires
- Controllable manipulation and detection of local densities and bipartite entanglement in a quantum gas by a dissipative defect
- Macroscopic Zeno effect and stationary flows in nonlinear waveguides with localized dissipation
- A Single Atom Thermometer for Ultracold Gases
- Strong-coupling Bose polarons in 1D: Condensate deformation and modified Bogoliubov phonons
- Dynamical quantum Cherenkov transition of fast impurities in quantum liquids
- Unbounded entanglement production via a dissipative impurity
- Universal Dynamics of Stochastically Driven Quantum Impurities
- Symmetry-protected transport through a lattice with a local particle loss
- Non-Hermitian quantum impurity systems in and out of equilibrium: noninteracting case
- Noninteracting fermionic systems with localized losses: Exact results in the hydrodynamic limit
- Quantum Impurity Models coupled to Markovian and Non Markovian Baths
- Quantum critical systems with dissipative boundaries
- Thermal radiation and dissipative phase transition in a BEC with local loss
- Free Bosons with a Localized Source
- Quantum-Zeno Fermi polaron in the strong dissipation limit
- Ramsey interferometry of non-Hermitian quantum impurities
- Single Cs Atoms as Collisional Probes in a large Rb Magneto-Optical Trap
- Zeno crossovers in the entanglement speed of spin chains with noisy impurities
- Variational truncated Wigner approximation for weakly interacting Bose fields: Dynamics of coupled condensates
- Stability analysis and attractor dynamics of 3D dark solitons with localized dissipation
- A Luttinger Liquid coupled to Ohmic-class environments
- Perfectly absorbed and emitted currents by complex potentials in nonlinear media
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- Universality in driven open quantum matter
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- Variational approach to the dynamics of dissipative quantum impurity models
- Markovian to non-Markovian phase transition in the operator dynamics of a mobile impurity