Experimental Implementation of a Concatenated Quantum Error-Correcting Code

Nicolas Boulant, Lorenza Viola, Evan M. Fortunato, and David G. Cory

Phys. Rev. Lett. 94, 130501 – Published 8 April 2005

Abstract

Concatenated coding provides a general strategy to achieve the desired level of noise protection in quantum information processing. We report the implementation of a concatenated quantum error-correcting code able to correct phase errors with a strong correlated component. The experiment was performed using liquid-state nuclear magnetic resonance techniques on a four spin subsystem of labeled crotonic acid. Our results show that concatenation between active and passive quantum error correction is a practical tool to handle realistic noise involving both independent and correlated errors.

Received 27 September 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.130501

Authors & Affiliations

Nicolas Boulant¹, Lorenza Viola^2,*, Evan M. Fortunato¹, and David G. Cory¹

¹Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
²Department of Physics and Astronomy, Dartmouth College, 6127 Wilder Laboratory, Hanover, New Hampshire 03755, USA

^*Electronic address: lorenza.viola@dartmouth.edu

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Issue

Vol. 94, Iss. 13 — 8 April 2005

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