Experimental Characterization of Quantum Dynamics Through Many-Body Interactions
Name
Nigg-2013-Experimental Characterization of Quantum Dynamics Through Many-Body Interactions.pdf
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613.68 KB
Format
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Checksum (MD5)
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Author(s)
Nigg, Daniel
Barreiro, Julio T.
Schindler, Philipp
Mohseni, Masoud
Monz, Thomas
Chwalla, Michael
Hennrich, Markus
Blatt, Rainer
Date Issued
February 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Nigg, Daniel et al. “Experimental Characterization of Quantum Dynamics Through Many-Body Interactions.” Physical Review Letters 110.6 (2013). ©2013 American Physical Society
Version
Final published version
Abstract
We report on the implementation of a quantum process tomography technique known as direct characterization of quantum dynamics applied on coherent and incoherent single-qubit processes in a system of trapped [superscript 40]Ca[superscript +] ions. Using quantum correlations with an ancilla qubit, direct characterization of quantum dynamics reduces substantially the number of experimental configurations required for a full quantum process tomography and all diagonal elements of the process matrix can be estimated with a single setting. With this technique, the system’s relaxation times T[subscript 1] and T[subscript 2] were measured with a single experimental configuration. We further show the first, complete characterization of single-qubit processes using a single generalized measurement realized through multibody correlations with three ancilla qubits.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
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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.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.110.060403
