skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Shortcuts to adiabaticity in Fermi gases

Abstract

Shortcuts to adiabaticity (STA) provide an alternative to adiabatic protocols to guide the dynamics of the system of interest without the requirement of slow driving. We report the controlled speedup via STA of the nonadiabatic dynamics of a Fermi gas, both in the noninteracting and strongly coupled, unitary regimes. Friction-free superadiabatic expansion strokes, with no residual excitations in the final state, are demonstrated in the unitary regime by engineering the modulation of the frequencies and aspect ratio of the harmonic trap. STA are also analyzed and implemented in the high-temperature regime, where the shear viscosity plays a pivotal role and the Fermi gas is described by viscous hydrodynamics.

Authors:
 [1];  [2];  [1];  [1];  [3];  [4];  [2]
  1. East China Normal University, Shanghai (China)
  2. East China Normal University, Shanghai (China); Shanxi University, Taiyuan (China)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); University of Massachusetts, Boston, MA (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1492613
Report Number(s):
LA-UR-18-25779
Journal ID: ISSN 1367-2630
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
New Journal of Physics
Additional Journal Information:
Journal Volume: 20; Journal Issue: 10; Journal ID: ISSN 1367-2630
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Quantum thermodynamics

Citation Formats

Diao, Pengpeng, Deng, Shujin, Li, Fang, Yu, Shi, del Campo Chenu, Aurelia Sidonie, Del Campo, Adolfo, and Wu, Haibin. Shortcuts to adiabaticity in Fermi gases. United States: N. p., 2018. Web. doi:10.1088/1367-2630/aae45e.
Diao, Pengpeng, Deng, Shujin, Li, Fang, Yu, Shi, del Campo Chenu, Aurelia Sidonie, Del Campo, Adolfo, & Wu, Haibin. Shortcuts to adiabaticity in Fermi gases. United States. doi:10.1088/1367-2630/aae45e.
Diao, Pengpeng, Deng, Shujin, Li, Fang, Yu, Shi, del Campo Chenu, Aurelia Sidonie, Del Campo, Adolfo, and Wu, Haibin. Wed . "Shortcuts to adiabaticity in Fermi gases". United States. doi:10.1088/1367-2630/aae45e. https://www.osti.gov/servlets/purl/1492613.
@article{osti_1492613,
title = {Shortcuts to adiabaticity in Fermi gases},
author = {Diao, Pengpeng and Deng, Shujin and Li, Fang and Yu, Shi and del Campo Chenu, Aurelia Sidonie and Del Campo, Adolfo and Wu, Haibin},
abstractNote = {Shortcuts to adiabaticity (STA) provide an alternative to adiabatic protocols to guide the dynamics of the system of interest without the requirement of slow driving. We report the controlled speedup via STA of the nonadiabatic dynamics of a Fermi gas, both in the noninteracting and strongly coupled, unitary regimes. Friction-free superadiabatic expansion strokes, with no residual excitations in the final state, are demonstrated in the unitary regime by engineering the modulation of the frequencies and aspect ratio of the harmonic trap. STA are also analyzed and implemented in the high-temperature regime, where the shear viscosity plays a pivotal role and the Fermi gas is described by viscous hydrodynamics.},
doi = {10.1088/1367-2630/aae45e},
journal = {New Journal of Physics},
issn = {1367-2630},
number = 10,
volume = 20,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: Experimental setup. (A) Schematic representation of the experimental setup and (B) time-dependence of the beam power during the experimental protocol. In (B) the red line indicates the beam power during the evaporative cooling, while the blue and black lines represent the power intensity of the two separated beamsmore » along a STA expansion stroke. Aspecially designed optical crossed-dipole trap is formed by two orthogonal far-off resonance laser beams, providing a highly controllable trap frequency. M1– M4, Mirrors; L1–L2, cylindrical lenses; HC1–HC2, Feshbach coils; L3–L4, achromatic lenses; AOM, acousto-optic modulator; tof, time-of-flight.« less

Save / Share:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.