InterJournal Complex Systems, 32
Status: Accepted
Manuscript Number: [32]
Submission Date: 963011
The dual-rail quantum bit and quantum error correction
Author(s): Isaac Chuang , Yoshihisa Yamamoto

Subject(s): CX.09

Category: Brief Article


We present a new representation of the fundamental element of a quantum computer: the dual-rail quantum bit (qtbit), which naturally embeds redundancy useful for quantum error correction. We show two key results, first, that phase and amplitude damping of a qtbit may be modeled by the classical binary crossover and erasure channels, and second, that these errors may be corrected by surprisingly simple quantum circuits using elementary quantum optics technology.

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