Efficient quantum computation within a disordered heisenberg spin chain

Chiu Fan Lee, Neil F. Johnson

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


The possibility of efficient quantum computation, using a disordered Heisenberg spin-chain with 'always-on' couplings was discussed. In the proposed scheme, such disorder occurs naturally in naturally in nanofabricated systems. It was observed that the new approach are relevant to a range of quantum computing implementations and should stimulate experimentalists to explore less mature fabrication technologies. The result show that an arbitrary two-qubit gate could be implemented using just three relaxations of a controlled qubit, which amounts to switching the on-site energy terms at most 21 times.

Original languageEnglish (US)
Article number052322
Pages (from-to)052322-1-052322-4
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5 A
StatePublished - Nov 2004
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Efficient quantum computation within a disordered heisenberg spin chain'. Together they form a unique fingerprint.

Cite this