An adjustable-length cavity and Bose-Einstein condensate apparatus for multimode cavity QED
Abstract
We present a novel cavity QED system in which a Bose-Einstein condensate (BEC) is trapped within a high-finesse optical cavity whose length may be adjusted to access both single-mode and multimode configurations. We demonstrate the coupling of an atomic ensemble to the cavity in both configurations and measure that the single-atom, TE{{M}0,0}-mode cooperativity exceeds unity. The atoms are confined either within an intracavity far-off-resonance optical dipole trap or a crossed optical dipole trap via transversely oriented lasers. Multimode cavity QED provides fully emergent and dynamical optical lattices for intracavity BECs, in that the process of atomic self-organization may be described as a continuous symmetry breaking phase transition resulting in the emergence of a compliant lattice with phonon-like excitations. Such systems will enable explorations of quantum soft matter, including superfluid smectics, superfluid glasses, and spin glasses as well as neuromorphic associative memory.
- Publication:
-
New Journal of Physics
- Pub Date:
- April 2015
- DOI:
- 10.1088/1367-2630/17/4/043012
- arXiv:
- arXiv:1411.5443
- Bibcode:
- 2015NJPh...17d3012K
- Keywords:
-
- Condensed Matter - Quantum Gases;
- Physics - Atomic Physics;
- Quantum Physics
- E-Print:
- 18 pages, 8 figures