Non-Equilibrium Dynamics Beyond Dephasing

1. Front Matter

   Pages i-xii

   PDF

2. Preamble

   • Bernhard Rauer

   Pages 1-4

3. Introduction and Theoretical Basics

   • Bernhard Rauer

   Pages 5-27

4. Experimental Setup and Probing

   • Bernhard Rauer

   Pages 29-65

5. Cooling Through Uniform Loss

   • Bernhard Rauer

   Pages 67-86

6. Recurrences

   • Bernhard Rauer

   Pages 87-113

7. Outlook

   • Bernhard Rauer

   Pages 115-118

8. Back Matter

   Pages 119-128

   PDF

Cold atomic gases trapped and manipulated on atom chips allow the realization of seminal one-dimensional (1d) quantum many-body problems in an isolated and well controlled environment. In this context, this thesis presents an extensive experimental study of non-equilibrium dynamics in 1d Bose gases, with a focus on processes that go beyond simple dephasing dynamics. It reports on the observation of recurrences of coherence in the post-quench dynamics of a pair of 1d Bose gases and presents a detailed study of their decay. The latter represents the first observation of phonon-phonon scattering in these systems. Furthermore, the thesis investigates a novel cooling mechanism occurring in Bose gases subjected to a uniform loss of particles. Together, the results presented show a wide range of non-equilibrium phenomena occurring in 1d Bose gases and establish them as an ideal testbed for many-body physics beyond equilibrium.

• One-Dimensional Bose Gases
• Ultracold Atoms
• Atom Chips
• Recurrences in Isolated Quantum Systems
• Loss Induced Cooling
• Cooling of One-Dimensional Bose Gases
• Revivals in Quantum Many-Body Systems
• Quasi-Condensates
• Matterwave Interference

• Laboratoire Kastler Brossel, École Normale Supérieure, Paris, France

  Bernhard Rauer

Bernhard Rauer studied physics in Vienna and Singapore. He currently works as a posdocteral researcher at the Laboratoire Kastler Brossel in Paris.

Policies and ethics