Quantum Process Tomography: Resource Analysis of Different Strategies

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dc.creatorMohseni, M.
dc.creatorRezakhani, A. T.
dc.creatorLidar, D. A.
dc.date2007-02-13
dc.date2008-03-19
dc.date.accessioned2026-07-07T09:27:25Z
dc.date.available2026-07-07T09:27:25Z
dc.descriptionCharacterization of quantum dynamics is a fundamental problem in quantum physics and quantum information science. Several methods are known which achieve this goal, namely Standard Quantum Process Tomography (SQPT), Ancilla-Assisted Process Tomography (AAPT), and the recently proposed scheme of Direct Characterization of Quantum Dynamics (DCQD). Here, we review these schemes and analyze them with respect to some of the physical resources they require. Although a reliable figure-of-merit for process characterization is not yet available, our analysis can provide a benchmark which is necessary for choosing the scheme that is the most appropriate in a given situation, with given resources. As a result, we conclude that for quantum systems where two-body interactions are not naturally available, SQPT is the most efficient scheme. However, for quantum systems with controllable two-body interactions, the DCQD scheme is more efficient than other known QPT schemes in terms of the total number of required elementary quantum operations.
dc.description15 pages, 5 figures, published version
dc.identifierhttps://arxiv.org/abs/quant-ph/0702131
dc.identifierhttp://arxiv.org/abs/quant-ph/0702131
dc.identifierPhys. Rev. A 77, 032322 (2008)
dc.identifierdoi:10.1103/PhysRevA.77.032322
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/157096
dc.subjectQuantum Physics
dc.titleQuantum Process Tomography: Resource Analysis of Different Strategies
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