Thu, January 1, 2009

Adiabatic Preparation of Many Body States in Optical Lattices

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Thu, January 1, 2009

Demonstration of resolved sideband cavity cooling of a single ion

This is joint work with Vladan Vuletic.

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Thu, January 1, 2009

Observartion of itinerant ferromagnetism in a strongly interacting Fermi gas of ultracold atoms

Ferromagnetism of delocalized (itinerant) fermions occurs due to repulsive interactions and the exchange energy which reduces the interaction energy for spin polarized domains due to the Pauli exclusion principle.  At a critical interaction, given by the so-called Stoner criterion [1], they system spontaneously develops domains and becomes ferromagnetic.  This, together with a suitable band structure...

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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...

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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...

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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...

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Thu, January 1, 2009

Two-Orbital SU(N) Magnetism with Ultracold Alkaline- Earth Atoms

A. Gorshkov, M. Hermele, V. Gurarie, C. Xu, P. Julienne, J. Ye, P. Zoller, E. Demler, M. Lukin, and A. Rey, Two-Orbital SU(N) Magnetism with Ultracold Alkaline- Earth Atoms, submitted to Nature Physics, (2009).

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Thu, January 1, 2009

Repetitive Readout of a Single Electron Spin via Quantum Logic

L. Jiang, J. Hodges, J. Maze, P. Maurer, J. Taylor, D. Cory, P. Hemmer, R. Walsworth, A.

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Thu, January 1, 2009

Quantum Repeater with Encoding

L. Jiang, J. M. Taylor, K. Nemoto, W. J. Munro, R. V. Meter, and M. D. Lukin, Quantum Repeater with Encoding, Phys. Rev. A 79, 032325 (2009).

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Thu, January 1, 2009

Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms

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