Geometric manipulation of the quantum states of two-level atoms

Manipulation of the quantum states of two-level atoms has been investigated using laser-controlled geometric phase change, which has the potential to build robust quantum logic gates for quantum computing. For a qubit based on two electronic transition levels of an atom, two basic quantum operations...

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Bibliographic Details
Published in:	Physical review. A, Atomic, molecular, and optical physics Vol. 69; no. 5
Main Authors:	Tian, Mingzhen, Barber, Zeb W., Fischer, Joe A., Babbitt, Wm. Randall
Format:	Journal Article
Language:	English
Published:	United States 01-05-2004
Subjects:	ALUMINIUM COMPOUNDS ATOMIC AND MOLECULAR PHYSICS ATOMS CRYSTALS DOPED MATERIALS GARNETS GATING CIRCUITS INFORMATION THEORY OPERATION OPTICS POTENTIALS PULSES QUANTUM MECHANICS THULIUM IONS YTTERBIUM COMPOUNDS YTTRIUM
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Summary:	Manipulation of the quantum states of two-level atoms has been investigated using laser-controlled geometric phase change, which has the potential to build robust quantum logic gates for quantum computing. For a qubit based on two electronic transition levels of an atom, two basic quantum operations that can make any universal single qubit gate have been designed employing resonant laser pulses. An operation equivalent to a phase gate has been demonstrated using Tm{sup 3+} doped in a yttrium aluminum garnet crystal.
ISSN:	1050-2947 1094-1622
DOI:	10.1103/PhysRevA.69.050301