Direct characterization of quantum dynamics with noisy ancilla
Abstract
We present methods for the direct characterization of quantum dynamics (DCQD) in which both the principal and ancilla systems undergo noisy processes. Using a concatenated error detection code, we discriminate between located and unlocated errors on the principal system in what amounts to filtering of ancilla noise. The example of composite noise involving amplitude damping and depolarizing channels is used to demonstrate the method, while we find the rate of noise filtering is more generally dependent on code distance. Furthermore our results indicate the accuracy of quantum process characterization can be greatly improved while remaining within reach of current experimental capabilities.
- Authors:
-
- 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
- OSTI Identifier:
- 1235832
- Alternate Identifier(s):
- OSTI ID: 1226862
- Grant/Contract Number:
- AC05-00OR22725; AC0500OR22725
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physical Review. A
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 5; Journal ID: ISSN 1050-2947
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; quantum information; quantum computing; error correction; quantum physics
Citation Formats
Dumitrescu, Eugene F., and Humble, Travis S. Direct characterization of quantum dynamics with noisy ancilla. United States: N. p., 2015.
Web. doi:10.1103/PhysRevA.92.052329.
Dumitrescu, Eugene F., & Humble, Travis S. Direct characterization of quantum dynamics with noisy ancilla. United States. https://doi.org/10.1103/PhysRevA.92.052329
Dumitrescu, Eugene F., and Humble, Travis S. 2015.
"Direct characterization of quantum dynamics with noisy ancilla". United States. https://doi.org/10.1103/PhysRevA.92.052329. https://www.osti.gov/servlets/purl/1235832.
@article{osti_1235832,
title = {Direct characterization of quantum dynamics with noisy ancilla},
author = {Dumitrescu, Eugene F. and Humble, Travis S.},
abstractNote = {We present methods for the direct characterization of quantum dynamics (DCQD) in which both the principal and ancilla systems undergo noisy processes. Using a concatenated error detection code, we discriminate between located and unlocated errors on the principal system in what amounts to filtering of ancilla noise. The example of composite noise involving amplitude damping and depolarizing channels is used to demonstrate the method, while we find the rate of noise filtering is more generally dependent on code distance. Furthermore our results indicate the accuracy of quantum process characterization can be greatly improved while remaining within reach of current experimental capabilities.},
doi = {10.1103/PhysRevA.92.052329},
url = {https://www.osti.gov/biblio/1235832},
journal = {Physical Review. A},
issn = {1050-2947},
number = 5,
volume = 92,
place = {United States},
year = {Mon Nov 23 00:00:00 EST 2015},
month = {Mon Nov 23 00:00:00 EST 2015}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Cited by: 5 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.