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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
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Quantum simulation of ultrafast dynamics using trapped ultracold atoms
Ruwan Senaratne1, Shankari V Rajagopal1, Toshihiko Shimasaki1
1University of California and California Institute for Quantum Emulation, Santa Barbara, CA, 93106, USA.
Nature Communications
|May 27, 2018
Summary
Researchers used ultracold atoms to quantum simulate ultrafast electronic dynamics, achieving temporal magnification up to 12 orders of magnitude. This novel approach offers a complementary method to pulsed laser studies.
Area of Science:
- Atomic physics
- Quantum simulation
- Ultrafast dynamics
Background:
- Ultrafast electronic dynamics are conventionally studied using pulsed lasers.
- Observing extremely rapid processes in atomic and molecular systems presents significant experimental challenges.
Purpose of the Study:
- To demonstrate a novel quantum simulation approach for studying ultrafast dynamics using ultracold atoms.
- To establish cold-atom quantum simulation as a complementary experimental tool for ultrafast science.
Main Methods:
- Utilizing trapped ultracold atoms in a tunable optical trap.
- Emulating pulsed laser electric fields with time-varying forces on neutral atoms.
- Employing techniques such as nonlinear spectroscopy and potential shaping.
Main Results:
- Achieved temporal magnification of ultrafast dynamics by up to 12 orders of magnitude.
- Demonstrated nonlinear spectroscopy of a many-body bound state.
- Observed sub-cycle unbinding dynamics and measured carrier-envelope phase dependence.
Conclusions:
- Cold-atom quantum simulation provides a powerful complementary method to pulsed laser techniques for investigating ultrafast electronic dynamics.
- This approach allows for the study of extremely fast processes with high temporal resolution.
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