Počet záznamů: 1

Optimal time schedule for adiabatic evolution

  1. 1.
    0353425 - UJF-V 2011 RIV US eng J - Článek v odborném periodiku
    Avron, J.E. - Fraas, Martin - Graf, G.M. - Grech, P.
    Optimal time schedule for adiabatic evolution.
    Physical Review. A. Roč. 82, č. 4 (2010), 040304/1-040304/4 ISSN 1050-2947
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: QUANTUM COMPUTATION
    Kód oboru RIV: BA - Obecná matematika
    Impakt faktor: 2.861, rok: 2010

    We show that, provided dephasing is taken into account, there is a unique timetable which maximizes the fidelity with a target state in adiabatic evolutions. The optimum has constant tunneling rate along the path. Application to quantum search algorithms recovers the Grover result for appropriate scaling of the dephasing with the size of the database. Moreover, the Grover bound imposes constraints on the dephasing rates of systems coupled to a universal Markovian bath.
    Trvalý link: http://hdl.handle.net/11104/0192677