News: Research Highlights

260 articles

Thu, January 1, 2009

Theoretical Studies of Collisional Processes in Cold and Ultracold Gases

Theoretical Studies of collisional processes and gases at ultracold and cold temperatures in research that is responsive to the experimental program. Scattering at low temperatures is sensitive to the interaction at large distances of the colliding species. We calculated the interactions at long-range of a pair of ytterbium atoms (P. Zhang and a. Dalgarno 2008)...

News type: Research Highlights

Thu, January 1, 2009

Efficient All-Optical Switching Using Slow Light within a Hollow Fiber

M. Bajcsy, S. Hofferberth, V. Balic, T. Peyronel, M. Hafezi, A. S. Zibrov, V. Vuletic, and M. D. Lukin, Efficient All Optical Switching Using Slow Light Within a Hollow Fiber, Phys. Rev. Lett. 102, 203902 (2009).

News type: Research Highlights

Thu, January 1, 2009

Spin gradient thermometry for ultracold atoms in optical lattices

A major goal of current research with ultracold atoms in optical lattices is the realization of magnetic ordering. This requires temperatures on the order of the second order tunneling rate, J2/U where U is the interaction energy and J the tunneling amplitude. Such temperatures are about ten times less than 1 nk, the lowest temperature...

News type: Research Highlights

Thu, January 1, 2009

Collision-induced spin depolarization of alkali metal atoms in cold He gas

T.V. Tscherbul, P. Zhang, H.R. Sadeghpour, A. Dalgarno, N. Brahms, Y.S. Au, and J.M. Doyle, Physical Review accepted (2009).

News type: Research Highlights

Thu, January 1, 2009

Cavity sideband cooling of a single trapped ion

Cavity sideband cooling of a single trapped ion. D. R. Leibrandt, J. Labaziewicz, V. Vuletic, and I. L. Chuang, submitted to Phys. Rev. Lett (5/2009).

News type: Research Highlights

Thu, January 1, 2009

Universal resource state for One-Way Quantum Computations

A fascinating model for quantum computing, other than the traditional quantum circuit model, is the “one-way” model that is based on simply doing single qubit measurements to a fixed, initial entangled quantum state of many qubits. By feeding back measurement results to control the axis of subsequent measurements, any quantum circuit can be simulated and...

News type: Research Highlights

Thu, January 1, 2009

Mechanism of Collisional Spin Relaxation in 3S Molecules

Wesley Campbell, Timur Rscherbul, Hsin-I Lu, Edem Tsikata, Roman Krems, John Doyle, Physical Review Letters 102 013003 (2009)

News type: Research Highlights

Thu, January 1, 2009

Hybrid 2D surface trap for quantum simulation

J. I. Gillen, W. S. Bakr, A. Peng, P. Unterwaditzer, S. Foelling, M. Greiner, Hybrid 2D surface trap for quantum simulation, arXiv:0812.363v1 (2008)

News type: Research Highlights

Thu, January 1, 2009

Realization of high selectivity ion qubit addressing scheme

Selectively addressing individual qubits in an array of ions is a vital task for scalable quantum computation with trapped ions. Traditionally, this is accomplished using complex optics for laser beam steering, but such schemes are not easily scalable. We have realized a scalable alternative which employs the advantages of microfabrication and cryogenic operation, and applies...

News type: Research Highlights

Thu, January 1, 2009

Cold Trapped Molecules: Collisional Limitations and Mechanisms

Wesley Campbell, Timur Rscherbul, Hsin-I Lu, Edem Tsikata, Roman Krems, John Doyle, Physical Review Letters 102 013003 (2009)

News type: Research Highlights