Qubit-qubit interaction in quantum computers: errors and scaling laws

Julio R. Gea-Banacloche

doi:10.1117/12.312633

6 July 1998 Qubit-qubit interaction in quantum computers: errors and scaling laws

Julio R. Gea-Banacloche

Proceedings Volume 3385, Photonic Quantum Computing II; (1998) https://doi.org/10.1117/12.312633
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

This paper explores the limitations that interaction between the physical qubits making up a quantum computer may impose on the computer's performance. For computers using atoms as qubits, magnetic dipole-dipole interactions are likely to be dominant; various types of errors which they might introduce are considered here. The strength of the interaction may be reduce by increasing the distance between qubits, which in general will make the computer slower. For ion-chain based quantum computers the slowing down due to this effect is found to be generally more sever than that due to other causes. In particular, this effect alone would be enough to make these systems unacceptably slow for large-scale computation, whether they use the center of mass motion as the 'bus' or whether they do this via an optical cavity mode.

Citation Download Citation

Julio R. Gea-Banacloche "Qubit-qubit interaction in quantum computers: errors and scaling laws", Proc. SPIE 3385, Photonic Quantum Computing II, (6 July 1998); https://doi.org/10.1117/12.312633

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