Natural two-qubit gate for quantum computation using the XY interaction

Journal Article · Fri Feb 28 23:00:00 EST 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.032301· OSTI ID:20633816

Schuch, Norbert; Siewert, Jens ^[1]

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1. Institut fuer Theoretische Physik, Universitaet Regensburg, 93040 Regensburg (Germany)

The two-qubit interaction Hamiltonian of a given physical implementation determines whether or not a two-qubit gate such as the controlled-NOT (CNOT) gate can be realized easily. It can be shown that, e.g., with the XY interaction more than one two-qubit operation is required in order to realize the CNOT operation. Here we propose a two-qubit gate for the XY interaction which combines the CNOT and SWAP operations. By using this gate quantum circuits can be implemented efficiently, even if only nearest-neighbor coupling between the qubits is available.

• OSTI ID: 20633816
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 67; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BASIC INTERACTIONS
COUPLING
HAMILTONIANS
IMPLEMENTATION
INFORMATION THEORY
OPERATION
QUANTUM MECHANICS