Large-scale quantum computation in an anharmonic linear ion trap

¹  FOCUS Center and MCTP, Department of Physics, University of Michigan - Ann Arbor, MI 48109, USA
²  LQIT and ICMP, Department of Physics, South China Normal University - Guangzhou, China
³  Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology College Park, MD 20742, USA

Corresponding author: guindarl@umich.edu

Received: 27 February 2009
Accepted: 3 June 2009

Abstract

We propose a large-scale quantum computer architecture by more easily stabilizing a single large linear ion chain in a very simple trap geometry. By confining ions in an anharmonic linear trap with nearly uniform spacing between ions, we show that high-fidelity quantum gates can be realized in large linear ion crystals under the Doppler temperature based on coupling to a near-continuum of transverse motional modes with simple shaped laser pulses.