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Updated: Jul 3, 2026
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Controlled generation of coherent matter currents using a periodic driving field
1Dpto de Física de Materiales, Universidad Complutense de Madrid, E-28040, Madrid, Spain.
Physical Review Letters
|July 23, 2008
Summary
We demonstrate how oscillating fields can control ultracold bosons in optical lattices. This method precisely generates and sustains coherent atomic currents, offering stable quantum system control.
Area of Science:
- Quantum physics
- Atomic physics
- Condensed matter physics
Background:
- Ultracold bosons in optical lattices are crucial for quantum simulations.
- Controlling quantum dynamics, especially atomic currents, is a key challenge.
- Bose-Hubbard model describes interacting bosons in lattices.
Purpose of the Study:
- To investigate the impact of strong, oscillating driving fields on ultracold boson dynamics.
- To explore the use of driving fields for generating and maintaining coherent atomic currents.
- To establish a stable and precise method for controlling quantum systems.
Main Methods:
- Modeling the system using the Bose-Hubbard model.
- Applying Floquet theory to analyze stroboscopic and time-averaged behavior.
- Investigating the control of intersite tunneling phase by the driving field.
Main Results:
- A strong, oscillating driving field can induce and sustain coherent atomic currents.
- Control over the phase of intersite tunneling is achieved via the driving field.
- The proposed procedure offers stable and precise manipulation of quantum systems.
Conclusions:
- Oscillating driving fields provide a powerful tool for controlling ultracold bosons in optical lattices.
- This technique enables the generation and maintenance of coherent atomic currents.
- The method offers a robust pathway for precise control of quantum phenomena.
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