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1826217374972379136
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| author2 |
Massachusetts Institute of Technology. Research Laboratory of Electronics
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| author_facet |
Massachusetts Institute of Technology. Research Laboratory of Electronics
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MIT
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| description |
We use hyperentangled photons to experimentally implement an entanglement-assisted quantum process tomography technique known as direct characterization of quantum dynamics. Specifically, hyperentanglement-assisted Bell-state analysis enabled us to characterize a variety of single-qubit quantum processes using far fewer experimental configurations than are required by standard quantum process tomography. Furthermore, we demonstrate how known errors in Bell-state measurement may be compensated for in the data analysis. Using these techniques, we have obtained single-qubit process fidelities over 98% but with one-third the number of experimental configurations required for standard quantum process tomography. Extensions of these techniques to multiqubit quantum processes are discussed.
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2024-09-23T17:02:40Z
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Article
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| id |
mit-1721.1/78307
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| institution |
Massachusetts Institute of Technology
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| language |
en_US
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| last_indexed |
2024-09-23T17:02:40Z
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| publishDate |
2013
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| publisher |
American Physical Society
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dspace
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| spelling |
mit-1721.1/783072024-03-22T18:35:53Z Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics Massachusetts Institute of Technology. Research Laboratory of Electronics We use hyperentangled photons to experimentally implement an entanglement-assisted quantum process tomography technique known as direct characterization of quantum dynamics. Specifically, hyperentanglement-assisted Bell-state analysis enabled us to characterize a variety of single-qubit quantum processes using far fewer experimental configurations than are required by standard quantum process tomography. Furthermore, we demonstrate how known errors in Bell-state measurement may be compensated for in the data analysis. Using these techniques, we have obtained single-qubit process fidelities over 98% but with one-third the number of experimental configurations required for standard quantum process tomography. Extensions of these techniques to multiqubit quantum processes are discussed. National Science Foundation (U.S.) (Grant PHY-0903865) 2013-04-09T20:20:02Z 2013-04-09T20:20:02Z 2013-02 2012-05 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/78307 Graham, T. M. et al. “Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics.” Physical Review Letters 110.6 (2013). ©2013 American Physical Society en_US http://dx.doi.org/10.1103/PhysRevLett.110.060404 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS
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| spellingShingle |
Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics
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| title |
Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics
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| title_full |
Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics
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| title_fullStr |
Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics
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| title_full_unstemmed |
Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics
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| title_short |
Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics
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| title_sort |
hyperentanglement enabled direct characterization of quantum dynamics
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| url |
http://hdl.handle.net/1721.1/78307
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