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arXiv · 1207.0679

Hardware-efficient autonomous quantum error correction

Zaki Leghtas·Gerhard Kirchmair·Brian Vlastakis·Robert Schoelkopf·Michel Devoret·Mazyar Mirrahimi
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Abstract

We propose a new method to autonomously correct for errors of a logical qubit induced by energy relaxation. This scheme encodes the logical qubit as a multi-component superposition of coherent states in a harmonic oscillator, more specifically a cavity mode. The sequences of encoding, decoding and correction operations employ the non-linearity provided by a single physical qubit coupled to the cavity. We layout in detail how to implement these operations in a practical system. This proposal directly addresses the task of building a hardware-efficient and technically realizable quantum memory.

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Zaki Leghtas, Gerhard Kirchmair, Brian Vlastakis, Robert Schoelkopf, Michel Devoret, Mazyar Mirrahimi. 2012-07-03. Hardware-efficient autonomous quantum error correction. https://doi.org/10.1103/physrevlett.111.120501

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