Motional quantum error correction

J. Steinbach*, J. Twamley

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We examine the dynamics of a qubit stored in the motional degrees of freedom of an ultra-cold ion in an ion trap which is subject to the decoherence effects of a finite-temperature bath. We discover an encoding of the qubit, in two of the motional modes of the ion, which is stable against the occurrence of either none or one quantum jump. For the case of a zero-temperature bath we describe how to transfer only the information concerning the occurrence of quantum jumps and their types to a measuring apparatus, without affecting the ion's motional state significantly. We then describe how to generate a unity restoration of the qubit given the jump information, through Raman processes generated by a series of laser pulses.

Original languageEnglish
Pages (from-to)453-485
Number of pages33
JournalJournal of Modern Optics
Issue number2-3 SPEC.
Publication statusPublished - 15 Feb 2000
Externally publishedYes


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