# Producing superfluid circulation states using phase imprinting

@article{Kumar2018ProducingSC, title={Producing superfluid circulation states using phase imprinting}, author={Avinash Kumar and Romain Dubessy and Thomas Badr and Camilla de Rossi and Mathieu de Go{\"e}r de Herve and Laurent Longchambon and H{\'e}l{\`e}ne Perrin}, journal={Physical Review A}, year={2018}, volume={97} }

We propose a method to prepare states of given quantized circulation in annular Bose-Einstein condensates (BEC) confined in a ring trap using the method of phase imprinting without relying on a two-photon angular momentum transfer. The desired phase profile is imprinted on the atomic wave function using a short light pulse with a tailored intensity pattern generated with a Spatial Light Modulator. We demonstrate the realization of 'helicoidal' intensity profiles suitable for this purpose. Due…

## 18 Citations

### Phase and micromotion of Bose-Einstein condensates in a time-averaged ring trap

- PhysicsPhysical Review A
- 2018

Rapidly scanning magnetic and optical dipole traps have been widely utilized to form time-averaged potentials for ultracold quantum gas experiments. Here we theoretically and experimentally…

### Current production in ring condensates with a weak link

- Physics
- 2020

We consider attractive and repulsive condensates in a ring trap stirred by a weak link, and analyze the spectrum of solitonic trains dragged by the link, by means of analytical expressions for the…

### Blocked populations in ring-shaped optical lattices

- PhysicsPhysical Review A
- 2018

We study a special dynamical regime of a Bose-Einstein condensate in a ring-shaped lattice where the populations in each site remain constant during the time evolution. The states in this regime are…

### Imprinting persistent currents in tunable fermionic rings

- Physics
- 2022

Persistent currents in annular geometries have played an important role in disclosing the quantum phase coherence of superconductors and mesoscopic electronic systems. Ultracold atomic gases in…

### Collisional dynamics of multiple dark solitons in a toroidal Bose–Einstein condensate: quasiparticle picture

- PhysicsThe European Physical Journal D
- 2018

Abstract
We study the collisional dynamics of multiple dark solitons in a Bose–Einstein condensate confined by a toroidal trap. We assume a tight enough confinement in the radial direction to prevent…

### A versatile ring trap for quantum gases

- Physics
- 2021

We report on the confinement of a Bose–Einstein condensate in an annular trap with widely tunable parameters. The trap relies on a combination of magnetic, optical and radio-frequency fields. The…

### Persistent Currents in Rings of Ultracold Fermionic Atoms.

- PhysicsPhysical review letters
- 2022

We have produced persistent currents of ultracold fermionic atoms trapped in a ring, with lifetimes greater than 10 sec in the strongly interacting regime. These currents remain stable well into the…

### Stationary states of Bose–Einstein condensed atoms rotating in an asymmetric ring potential

- PhysicsJournal of Physics B: Atomic, Molecular and Optical Physics
- 2021

We consider a Bose–Einstein condensate, which is confined in a very tight toroidal/annular trap, in the presence of a potential, which breaks the axial symmetry of the Hamiltonian. We investigate the…

### Oscillations and Decay of Superfluid Currents in a One-Dimensional Bose Gas on a Ring.

- PhysicsPhysical review letters
- 2019

It is shown that the dynamics of a supercurrent imprinted on a one-dimensional ring of interacting bosons in the presence of a defect created by a localized barrier is captured by a dual Josephson model and involve phase slips of thermal or quantum nature.

## References

SHOWING 1-10 OF 72 REFERENCES

### Generating solitons by phase engineering of a bose-einstein condensate

- PhysicsScience
- 2000

A quantum state was designed and produced by optically imprinting a phase pattern onto a BEC of sodium atoms, and matter-wave interferometry with spatially resolved imaging was used to analyze the resultant phase distribution.

### Classical and quantum models for phase imprinting

- Physics
- 2003

We investigate theoretically the generation of a persistent current in a Bose-Einstein condensate in a toroidal trap by means of phase imprinting. The phase-imprinting potential must be periodic…

### Dark solitons in Bose-Einstein condensates

- PhysicsQELS 2000
- 1999

Summary form only given. One of the most striking aspects of Bose-Einstein condensates (BEC) of weakly interacting gases are the nonlinear properties of these systems. Of particular interest are…

### Quantized supercurrent decay in an annular Bose-Einstein condensate

- Physics
- 2012

We study the metastability and decay of multiply-charged superflow in a ring-shaped atomic Bose-Einstein condensate. Supercurrent corresponding to a giant vortex with topological charge up to q=10 is…

### Driving phase slips in a superfluid atom circuit with a rotating weak link.

- PhysicsPhysical review letters
- 2013

Well-defined phase slips are observed between quantized persistent current states around a toroidal atomic (23Na) Bose-Einstein condensate and the ability to dynamically vary the current-phase relation of the weak link, a feature which is difficult to implement in superconducting or superfluid helium circuits is observed.

### Generation of topological flows by phase imprinting

- Physics
- 2005

We discuss the controlled generation of topological flows for an ultracold atomic Bose gas in a toroidal trap configuration using the method of phase imprinting. Starting from a stationary kink…

### Bose-einstein condensation in quasi-2D trapped gases

- PhysicsPhysical review letters
- 2000

It is found that well below the transition temperature T(c) the equilibrium state is a true condensate, whereas at intermediate temperatures T<T( c) one has a quasicondensate (condensate with fluctuating phase).

### Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link.

- PhysicsPhysical review letters
- 2011

A long-lived persistent current is created in a toroidal Bose-Einstein condensate held in an all-optical trap and is consistent with dissipation due to the creation of vortex-antivortex pairs.

### Experimental realization of Josephson junctions for an atom SQUID.

- PhysicsPhysical review letters
- 2013

A pair of Josephson junctions are created on a toroidal dilute gas Bose-Einstein condensate (BEC), a configuration that is the cold atom analog of the well-known dc superconducting quantum interference device (SQUID).

### Conduction of Ultracold Fermions Through a Mesoscopic Channel

- PhysicsScience
- 2012

A cold-atom analog of a mesoscopic conductor is engineered and studied and induced a current through the channel and found ohmic conduction, even when the channel is ballistic, which opens the way toward quantum simulation of mesoscopic devices with quantum gases.