6533b859fe1ef96bd12b6f3f
RESEARCH PRODUCT
Quantum search by parallel eigenvalue adiabatic passage
Stéphane GuérinNicolas J. CerfDavid Daemssubject
PhysicsQuantum Physics[ PHYS.QPHY ] Physics [physics]/Quantum Physics [quant-ph]FOS: Physical sciencesAdiabatic quantum computation01 natural sciencesAtomic and Molecular Physics and OpticsQuantum search010305 fluids & plasmassymbols.namesake[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]Search algorithmQuantum mechanics0103 physical sciencesComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATIONsymbolsStatistical physics010306 general physicsAdiabatic processHamiltonian (quantum mechanics)Quantum Physics (quant-ph)Eigenvalues and eigenvectors[PHYS.QPHY] Physics [physics]/Quantum Physics [quant-ph]ComputingMilieux_MISCELLANEOUSQuantum computerdescription
We propose a strategy to achieve the Grover search algorithm by adiabatic passage in a very efficient way. An adiabatic process can be characterized by the instantaneous eigenvalues of the pertaining Hamiltonian, some of which form a gap. The key to the efficiency is based on the use of parallel eigenvalues. This allows us to obtain non-adiabatic losses which are exponentially small, independently of the number of items in the database in which the search is performed.
year | journal | country | edition | language |
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2008-10-01 |