Sat, January 1, 2011

Spin gradient demagnetization cooling of ultracold atoms

We have demonstrated a new cooling method in which a time-varying magnetic field gradient is applied to an ultracold spin mixture [1].  We prepare a two-component cloud of rubidium atoms, either in the superfluid or Mott insulator phase, in a strong field gradient separating the two components with a narrow mixed region between the pure-spin...

Sat, January 1, 2011

Quantum computing with light

Quantum computing with light

Sat, January 1, 2011

Speckle Imaging of Spin Fluctuations in a Strongly Interacting Fermi Gas

Spin fluctuations and density fluctuations are studied for a two-component gas of strongly interacting fermions along the BEC-BCS crossover [1].  Spin fluctuations are observed by directly measuring the difference in densities for the two spin states.  This was done by using a probe laser which had equal detuning from both states, but with opposite signs.

Sat, January 1, 2011

Interaction?induced orbital excitation blockade of ultracold atoms in an optical lattice arXiv:1105.5834v1. In press. [cond-mat.quant-gas]

Sat, January 1, 2011

Laser Cooling and Real-Time Projective Measurement of Nuclear Spin Environment Using a Solid-State Qubit, Nature, 478 497-501 (2011).

Sat, January 1, 2011

Optomechanical transducers for quantum information processing

Sat, January 1, 2011

Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules

Sat, January 1, 2011

Quantum Magnetism with Polar Alkali-Metal Dimers

Sat, January 1, 2011

Evolution of Fermion Pairing from Three to Two Dimensions

Interacting fermions in coupled two-dimensional (2D) layers present unique physical phenomena and are central to the description of unconventional superconductivity in high-transition-temperature cuprates and layered organic conductors. Reduced dimensionality enhances the effect of fluctuations, while interlayer coupling can stabilize superconductivity and even amplify the transition temperature. A fermionic superfluid loaded into a periodic potential should...

Sat, January 1, 2011

Relaxation of Fermionic Excitations in a Strongly Attractive Fermi Gas in an Optical Lattice, Phys. Rev. Lett., 107 145303 (2011).