Synthetic Lorentz force in classical atomic gases via Doppler effect and radiation pressure

Dubček, Tena; Šantić, Neven; Jukić, Dario; Aumiler, Damir; Ban, Ticijana; Buljan, Hrvoje

doi:10.1103/physreva.89.063415

Cited by 5 publications

(10 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The repumper laser is on resonance. The choice of those detuning values follows from our recent theoretical paper [21], and is such that we achieve the maximum deflection angle.…”

Section: Methodsmentioning

confidence: 99%

“…We take the linearized form of F v from Eq. (1), this enables us to solve the Fokker-Planck equation by using the ansatz from [21]. The coefficients α ij are evaluated from the calculated force at v 0.…”

Section: Numerical Simulationsmentioning

confidence: 99%

“…We use a different method to introduce a synthetic Lorentz force (SLF) to a classical system of cold atoms. It is based on radiation pressure and the Doppler effect, and was introduced theoretically in our recent paper [21]. Using radiation pressure is necessarily accompanied by spontaneous emission and radiation trapping, which makes our method non-applicable to quantum degenerate systems.…”

Section: Introductionmentioning

confidence: 99%

“…Two scenarios for the observation of the SLF were proposed in [21], each characterized with a completely different initial velocity distribution of cold atoms and each suitable for emulation of different classical systems.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synthetic Lorentz force in an expanding cold atomic gas

et al. 2017

Self Cite

View full text Add to dashboard Cite

We implement a synthetic Lorentz force in a cold atomic gas released from a magneto-optical trap. The signature of this is an angular deflection of a rotationally asymmetrical cloud. The effect is a consequence of thermal expansion of the cold atomic cloud under the influence of the applied synthetic Lorentz force. The synthetic Lorentz force is based on radiation pressure and the Doppler effect, making it straightforward to implement. The introduction of synthetic magnetism into our system, together with the fact that it is readily described by the Fokker-Planck equation, makes it an excellent candidate to emulate numerous complex classical systems.

show abstract

“…The repumper laser is on resonance. The choice of those detuning values follows from our recent theoretical paper [21], and is such that we achieve the maximum deflection angle.…”

Section: Methodsmentioning

confidence: 99%

Section: Numerical Simulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthetic Lorentz force in an expanding cold atomic gas

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…This concept based on radiation pressure, theoretically proposed in Ref. [17] , is straightforward to implement in a large volume (e.g., volumes 1 mm 3 –1 cm 3 are easily accessible) 18 , is applicable for a broad range of velocities, and can be extended to different geometries. The main reason for the absence of radiation pressure from the previously used methods of synthetic magnetism is the associated heating due to spontaneous emission.…”

mentioning

confidence: 99%

Experimental Demonstration of a Synthetic Lorentz Force by Using Radiation Pressure

Šantić

Dubček

Aumiler

et al. 2015

Sci Rep

Self Cite

View full text Add to dashboard Cite

Synthetic magnetism in cold atomic gases opened the doors to many exciting novel physical systems and phenomena. Ubiquitous are the methods used for the creation of synthetic magnetic fields. They include rapidly rotating Bose-Einstein condensates employing the analogy between the Coriolis and the Lorentz force, and laser-atom interactions employing the analogy between the Berry phase and the Aharonov-Bohm phase. Interestingly, radiation pressure - being one of the most common forces induced by light - has not yet been used for synthetic magnetism. We experimentally demonstrate a synthetic Lorentz force, based on the radiation pressure and the Doppler effect, by observing the centre-of-mass motion of a cold atomic cloud. The force is perpendicular to the velocity of the cold atomic cloud, and zero for the cloud at rest. Our novel concept is straightforward to implement in a large volume, for a broad range of velocities, and can be extended to different geometries.

show abstract

Two-temperature Brownian dynamics of a particle in a confining potential

et al. 2018

View full text Add to dashboard Cite

We consider the two-dimensional motion of a particle in a confining potential, subject to Brownian orthogonal forces associated with two different temperatures. Exact solutions are obtained for an asymmetric harmonic potential in the overdamped and underdamped regimes. For more general confining potentials, a perturbative approach shows that the stationary state exhibits some universal properties. The nonequilibrium stationary state is characterized with a nonzero orthoradial mean current, corresponding to a global rotation of the particle around the center. The rotation is due to two broken symmetries: two different temperatures and a mismatch between the principal axes of the confining asymmetric potential and the temperature axes. We confirm our predictions by performing a Brownian dynamics simulation. Finally, we propose to observe this effect on a laser-cooled atomic gas.

show abstract

Synthetic Lorentz force in classical atomic gases via Doppler effect and radiation pressure

Cited by 5 publications

References 24 publications

Synthetic Lorentz force in an expanding cold atomic gas

Synthetic Lorentz force in an expanding cold atomic gas

Experimental Demonstration of a Synthetic Lorentz Force by Using Radiation Pressure

Two-temperature Brownian dynamics of a particle in a confining potential

Contact Info

Product

Resources

About