One-Spin Quantum Logic Gates from Exchange Interactions and a Global Magnetic Field

2003/10/31 by Lian-Ao Wu, Daniel A. Lidar, Mark Friesen · 7 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat #quant-ph

paper · pdf · doi:10.1103/physrevlett.93.030501

published as Phys. Rev. Lett. 93, 030501 (2004) · 4 pages, incl. 1 figure. This significantly modified version accepted for publication in Phys. Rev. Lett

arxiv created 2004/05/14 · openalex publication_date 2004/07/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

It has been widely assumed that one-qubit gates in spin-based quantum computers suffer from severe technical difficulties. We show that one-qubit gates can, in fact, be generated using only modest and presently feasible technological requirements. Our solution uses only global magnetic fields and controllable Heisenberg exchange interactions, thus circumventing the need for single-spin addressing.

Cited by

• Recipes for spin-based quantum computing
• Fault-Tolerant Quantum Computation via Exchange Interactions
• Exchange-controlled single-electron-spin rotations in quantum dots
• Local operations in qubit arrays via global periodic manipulation
• Nuclear spin polarization and manipulation by repeated measurements
• Correlated errors can lead to better performance of quantum codes
• Quantum error correction with global control

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