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Optimal time schedule for adiabatic evolution
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SYSNO ASEP 0353425 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Optimal time schedule for adiabatic evolution Author(s) Avron, J.E. (IL)
Fraas, Martin (UJF-V)
Graf, G.M. (CH)
Grech, P. (CH)Source Title Physical Review. A. - : American Physical Society - ISSN 1050-2947
Roč. 82, č. 4 (2010), 040304/1-040304/4Number of pages 4 s. Language eng - English Country US - United States Keywords QUANTUM COMPUTATION Subject RIV BA - General Mathematics CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000283347300001 DOI 10.1103/PhysRevA.82.040304 Annotation 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. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2011
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