Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics
Name
Graham-2013-Hyperentanglement-Enabled Direct Characterization of Quantum Dynamics.pdf
Size
1.17 MB
Format
Adobe PDF
Checksum (MD5)
57b32abd9ba83a6ecb25e2cd93f88f05
Date Issued
February 2013
Journal
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
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
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.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.110.060404
