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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
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Freezing, accelerating, and slowing directed currents in real time with superimposed driven lattices
Aritra K Mukhopadhyay1, Benno Liebchen2, Thomas Wulf1
1Zentrum für Optische Quantentechnologien, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
Physical Review. E
|June 15, 2016
Summary
We developed a new method for controlling particle transport in real-time using driven lattices. This technique allows for on-demand acceleration, deceleration, or freezing of particle movement by manipulating lattice structures.
Area of Science:
- Physics
- Statistical Mechanics
- Nanotechnology
Background:
- Directed particle transport is crucial in various scientific fields.
- Controlling particle movement in real-time remains a significant challenge.
- Existing methods often lack precision and flexibility.
Purpose of the Study:
- To present a generic scheme for real-time control of directed particle transport.
- To demonstrate the ability to accelerate, slow, and freeze particle transport on demand.
- To explore the underlying physical mechanisms governing this control.
Main Methods:
- Utilizing superimposed driven lattices to create controllable transport pathways.
- Implementing a switching mechanism to activate and deactivate lattices.
- Analyzing the role of cantori structures and phase space dynamics.
Main Results:
- Achieved precise, real-time control over particle transport speed and state.
- Demonstrated the ability to halt particle movement by switching lattices.
- Identified cantori structures as key to memory effects in particle populations.
Conclusions:
- The proposed scheme offers a versatile platform for manipulating particle transport.
- This method has potential applications in controlling cold atomic ensembles in optical lattices.
- The principles may be applied to targeted delivery systems for molecules and colloids.
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