Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics
Author(s)
Unknown author
DownloadGraham-2013-Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics.pdf (1.165Mb)
PUBLISHER_POLICY
Publisher Policy
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.
Terms of use
Metadata
Show full item recordAbstract
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.
Date issued
2013-02Department
Massachusetts Institute of Technology. Research Laboratory of ElectronicsJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Graham, T. M. et al. “Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics.” Physical Review Letters 110.6 (2013). ©2013 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114