2001/06/28 by N. E. Bonesteel, Dimitrije Stepanenko, D. Stepanenko +2 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Algorithm #Anisotropy #Computation #Computer science #Condensed matter physics #Coupling (piping) #Exchange interaction #Ferromagnetism #Hamiltonian (control theory) #Isotropy #Materials science #Mathematics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum error correction #Quantum gate #Quantum mechanics #Qubit #Spins #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevlett.87.207901
published as Phys. Rev. Lett. 87, 207901 (2001) · 4 pages, 1 eps figure
arxiv created 2001/06/28 · openalex publication_date 2001/10/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show how to eliminate the first-order effects of the spin-orbit interaction in the performance of a two-qubit quantum gate. Our procedure involves tailoring the time dependence of the coupling between neighboring spins. We derive an effective Hamiltonian which permits a systematic analysis of this tailoring. Time-symmetric pulsing of the coupling automatically eliminates several undesirable terms in this Hamiltonian. Well chosen pulse shapes can produce an effectively isotropic exchange gate, which can be used in universal quantum computation with appropriate coding.