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 language||English (US)|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|Issue number||5 A|
|State||Published - Nov 1 2004|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics