Scalable Register Initialization for Quantum Computing in a Optical Lattice

Published

June 1, 2005

Author(s)

G K. Brennen, G Pupillo, A M. Rey, Charles W. Clark, Carl J. Williams

Abstract

The Mott insulator state created by loading an atomic Bose-Einstein condensate (BEC) into an optical lattice may be used as a means to prepare a register of atomic qubits in an quantum computer. Such architecture requires a lattice commensurately filled with atoms, which corresponds to the insulator state only in the limit of zero inter-well tunneling. We show that a lattice with spatial inhomogeneity created by a magnetic field can be used to isolate a subspace in the center which is impervious to hole-hoping. Components of the wavefunction with more than one atom in any well can be projected out by selective measurement on a molecular photo-associative transition. Maintaining the molecular coupling induces a quantum Zeno effect that can sustain a commensurately filled register for the duration of a quantum computation.

Citation

Journal of Physics B-Atomic Molecular and Optical Physics

Pub Type

Journals

Keywords

Many-Body Theory, quantum computation

Citation

Brennen, G. , Pupillo, G. , Rey, A. , Clark, C. and Williams, C. (2005), Scalable Register Initialization for Quantum Computing in a Optical Lattice, Journal of Physics B-Atomic Molecular and Optical Physics (Accessed December 13, 2024)