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Title: Discrimination of correlated and entangling quantum channels with selective process tomography

Abstract

The accurate and reliable characterization of quantum dynamical processes underlies efforts to validate quantum technologies, where discrimination between competing models of observed behaviors inform efforts to fabricate and operate qubit devices. We present a protocol for quantum channel discrimination that leverages advances in direct characterization of quantum dynamics (DCQD) codes. We demonstrate that DCQD codes enable selective process tomography to improve discrimination between entangling and correlated quantum dynamics. Numerical simulations show selective process tomography requires only a few measurement configurations to achieve a low false alarm rate and that the DCQD encoding improves the resilience of the protocol to hidden sources of noise. Lastly, our results show that selective process tomography with DCQD codes is useful for efficiently distinguishing sources of correlated crosstalk from uncorrelated noise in current and future experimental platforms.

Authors:
 [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1329140
Alternate Identifier(s):
OSTI ID: 1328593
Grant/Contract Number:  
AC05-00OR22725; AC0500OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 94; Journal Issue: 4; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; qubit; quantum computing; quantum error correction

Citation Formats

Dumitrescu, Eugene, and Humble, Travis S. Discrimination of correlated and entangling quantum channels with selective process tomography. United States: N. p., 2016. Web. doi:10.1103/PhysRevA.94.042107.
Dumitrescu, Eugene, & Humble, Travis S. Discrimination of correlated and entangling quantum channels with selective process tomography. United States. https://doi.org/10.1103/PhysRevA.94.042107
Dumitrescu, Eugene, and Humble, Travis S. Mon . "Discrimination of correlated and entangling quantum channels with selective process tomography". United States. https://doi.org/10.1103/PhysRevA.94.042107. https://www.osti.gov/servlets/purl/1329140.
@article{osti_1329140,
title = {Discrimination of correlated and entangling quantum channels with selective process tomography},
author = {Dumitrescu, Eugene and Humble, Travis S.},
abstractNote = {The accurate and reliable characterization of quantum dynamical processes underlies efforts to validate quantum technologies, where discrimination between competing models of observed behaviors inform efforts to fabricate and operate qubit devices. We present a protocol for quantum channel discrimination that leverages advances in direct characterization of quantum dynamics (DCQD) codes. We demonstrate that DCQD codes enable selective process tomography to improve discrimination between entangling and correlated quantum dynamics. Numerical simulations show selective process tomography requires only a few measurement configurations to achieve a low false alarm rate and that the DCQD encoding improves the resilience of the protocol to hidden sources of noise. Lastly, our results show that selective process tomography with DCQD codes is useful for efficiently distinguishing sources of correlated crosstalk from uncorrelated noise in current and future experimental platforms.},
doi = {10.1103/PhysRevA.94.042107},
journal = {Physical Review A},
number = 4,
volume = 94,
place = {United States},
year = {Mon Oct 10 00:00:00 EDT 2016},
month = {Mon Oct 10 00:00:00 EDT 2016}
}

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Cited by: 5 works
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Works referencing / citing this record:

Quantum process identification: a method for characterizing non-markovian quantum dynamics
journal, August 2019


Binary discrimination in two-level quantum systems via hypothesis testing
journal, July 2019