Experimental Realization of Decoherence-Free Subspace in Neutron Interferometry
Name
Pushin-2011-Experimental Realization of Decoherence.pdf
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307.71 KB
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Author(s)
Huber, Michael G.
Arif, M.
Pushin, D. A.
Cory, David G.
Date Issued
October 2011
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Pushin, D. et al. “Experimental Realization of Decoherence-Free Subspace in Neutron Interferometry.” Physical Review Letters 107.15 (2011): n. pag. Web. 9 Feb. 2012. © 2011 American Physical Society
Version
Final published version
Abstract
A decoherence-free subspace (DFS) is an important class of quantum-error-correcting (QEC) codes that have been proposed for fault-tolerant quantum computation. The applications of QEC techniques, however, are not limited to quantum-information processing (QIP). Here we demonstrate how QEC codes may be used to improve experimental designs of quantum devices to achieve noise suppression. In particular, neutron interferometry is used as a test bed to show the potential for adding quantum error correction to quantum measurements. We built a five-blade neutron interferometer that incorporates both a standard Mach-Zender configuration and a configuration based on a DFS. Experiments verify that the DFS interferometer is protected against low-frequency mechanical vibrations. We anticipate these improvements will increase the range of applications for matter-wave interferometry.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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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.107.150401
