AIP conference proceedings

Quantum logic with a few trapped ions

Christopher R. Monroe, Wayne M. Itano, D. Kielpinski, B. E. King, Dietrich G. Leibfried, Christopher J. Myatt, Q. A. Turchette, David J. Wineland, C. S. Wood

Published Jan 1, 1999• 2 citations

Publisher

Abstract

Small laser-cooled crystals of atomic ions have attracted considerable interest in the last several years for their possible application toward quantum computation. This paper considers quantum logic schemes for small numbers of ions in the context of recent experiments at NIST.

DOI: 10.1063/1.57480

Related papers

Quantum Logic with a Few Trapped Ions

Christopher R. Monroe, Wayne M. Itano, D. Kielpinski +6 more

Abstract. Small laser-cooled crystals of atomic ions have attracted considerable interest in the last several years for their possible application toward quantum computation. This paper considers quantum logic schemes for small numbers of ions in the context of recent experiments at NIST. I

Jan 1, 19980 citations

Simplified quantum logic with trapped ions

Christopher R. Monroe, Dietrich G. Leibfried, B. E. King +3 more

We describe a simplified scheme for quantum logic with a collection of laser-cooled trapped atomic ions. Building on the scheme of Cirac and Zoller, we show how the fundamental controlled-NOT gate between a collective mode of ion motion and the internal states of a single ion can be reduced to a single laser pulse, and the need for a third auxiliary internal electronic state can be eliminated.

arXiv:quant-ph/9612042Physical Review AApr 1, 1997116 citations

Laser-Cooled Ions and Their Applications

Shinji Urabe

In an iontrap,laser-cooled ions can be confined in a small space in an ultra-high vacuum so that collisions rarely happen and the ions are well isolated from the environment. Since these conditions enable high-resolution spectroscopy of single ions, laser-cooled ions are suitable for use in developing frequency standards. The ions can be cooled to the motional ground state to give a well-defined initial quantum state for quantum state manipulation and quantum computing. In this review, principles of ion traps and laser cooling, and recent progress in optical frequency standards and quantum computing with trapped ions are described.

プラズマ・核融合学会誌Jan 1, 20051 citation

Spectroscopy of atomic and molecular ions using quantum logic

Piet O. Schmidt, Till Rosenband, Jeroen C. J. Koelemeij +4 more

Recently developed techniques for quantum computation using trapped ions allow precise coherent control of the internal and external states of single atoms. Here we report how these techniques can be employed to perform precision spectroscopy of atomic and molecular ions that lack accessible transitions for laser cooling and detection. Furthermore, we discuss how quantum logic can be used to laser‐cool molecules to near their rotational and vibrational ground state by avoiding detrimental spontaneous emission of photons from the molecule.

AIP conference proceedingsJan 1, 200620 citations

Quantum Computation with hot and cold ions: An assessment of proposed schemes

James, D F V

We present a brief critical review of the proposals for quantum computation with trapped ions, with particular emphasis on the possibilities for quantum computation without the need for cooling to the quantum ground state of the ions' collective oscillatory modes.

Mar 27, 200096 citations

Chemical applications of laser- and sympathetically-cooled ions in ion traps

Stefan Willitsch, Martin T. Bell, Alexander D. Gingell +1 more

Ensembles of cold atomic and molecular ions in ion traps prepared at millikelvin temperatures by laser and sympathetic cooling have recently found considerable interest in both physics and chemistry. At very low temperatures the ions form ordered structures in the trap also known as "Coulomb crystals". Ion Coulomb crystals exhibit a range of intriguing properties which render them attractive systems for novel experiments in chemical dynamics, ultrahigh-resolution spectroscopy and quantum-information processing. In this article we review the methods used to prepare atomic and molecular ion Coulomb crystals and discuss some recent studies in mass spectrometry, low-temperature chemistry and precision spectroscopy to illustrate their scientific potential for chemical applications. Finally, we conclude with an outlook on outstanding challenges and prospective further developments in the field.

Physical Chemistry Chemical PhysicsJan 1, 2008146 citations