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Quantum State Manipulation of Ultra-cold Fermionic and Bosonic Atoms

Summary

This theoretical research is done in collaboration with scientists at the Joint Quantum Institute (JQI) and the Center for Quantum Information and Computer Science (QuICS), both research partnerships between NIST and the University of Maryland.

Description

novel cooling methods for neutral atoms

The ability to control the motion of ultra-cold atoms at nanokelvin temperatures with lasers has also led to the desire to measure with collective and macroscopic states of quantum-degenerate matter. For furthering these promises we theoretically investigate the use of resonant atom-atom collisions to improve the sensitivity of atom interferometers and to develop novel means to slow and cool atomic clouds. In parallel, we study ways to prepare non-classical states of matter, such as squeezed and Schrödinger cat states, by engineering effective multi-body interactions.

Directions (in random order):

  • Quantum state manipulation of few-body systems in optical lattices.
  • Engineering effective three-body interactions.
  • Topological order in quantum-degenerate Fermi gases.
  • Atom interferometry with spinor Bose condensates.
  • Novel cooling methods for neutral atoms.

Caption for image in top right: Schematic of evaporative cooling with a narrow collisional resonance. Atoms (filled orange circles) with their kinetic energy along the vertical axis and location along the horizontal axis are held in a magnetic or optical bottle (parabolic curve). Pairs of colliding atoms with a relative kinetic energy, two such pairs are indicated with black angled arrows, in a narrow range or window around the location of the resonance, here at Eres, are removed. Once all atom pairs in this relative kinetic energy window are removed the resonance is lowered to smaller collision.

Created September 10, 2009, Updated December 6, 2018