Optimizing entangling quantum gates for physical systems

Journal Article · Sat Oct 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.042315· OSTI ID:22080355

Mueller, M M; Murphy, M; Calarco, T ^[1]; Reich, D M; Koch, C P ^[2]; Yuan, H ^[3]; Vala, J ^[4]; Whaley, K B ^[5]

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1. Institut fuer Quanteninformationsverarbeitung, Universitaet Ulm, 89081 Ulm (Germany)
2. Institut fuer Theoretische Physik, Freie Universitaet Berlin, Arnimallee 14, 14195 Berlin (Germany)
3. Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States)
4. Department of Mathematical Physics, National University of Ireland, Maynooth (Ireland)
5. Department of Chemistry, University of California, Berkeley, California 94720 (United States)

Optimal control theory is a versatile tool that presents a route to significantly improving figures of merit for quantum information tasks. We combine it here with the geometric theory for local equivalence classes of two-qubit operations to derive an optimization algorithm that determines the best entangling two-qubit gate for a given physical setting. We demonstrate the power of this approach for trapped polar molecules and neutral atoms.

• OSTI ID: 22080355
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ALGORITHMS
ATOMS
MOLECULES
OPTIMAL CONTROL
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION
TRAPPING