Scalable fault-tolerant quantum computation in DFS blocks

Details Scalable fault-tolerant quantum computation in DFS blocks Scalable fault-tolerant quantum computation in DFS blocks

2004-07-29

arxiv.org/abs/quant-ph/0407241v1

Phys. Rev. Lett. 93, 010501(2004)

Physics

Quantum Physics

4 papges, 2 figures

Scientific paper

10.1103/PhysRevLett.93.010501

We investigate how to concatenate different decoherence-free subspaces (DFSs) to realize scalable universal fault-tolerant quantum computation. Based on tunable $XXZ$ interactions, we present an architecture for scalable quantum computers which can fault-tolerantly perform universal quantum computation by manipulating only single type of parameter. By using the concept of interaction-free subspaces we eliminate the need to tune the couplings between logical qubits, which further reduces the technical difficulties for implementing quantum computation.

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