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Journal of Modern Optics

Implementing scalable quantum computation with cavities

Vittorio Giovannetti, P. Tombesi, David Vitali

Published Oct 1, 2000• 0 citations
Publisher

Abstract

We propose a scheme for quantum computing using high-Q cavities. In this scalable scheme, the qubits are represented by single-cavity modes restricted in the space spanned by the two lowest Fock states 0) and 1). One and two-qubit operations are performed via atoms sequentially crossing the cavities.
DOI
10.1080/09500340008235141

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We propose a scheme for implementing quantum computation with atomic ensembles on an atom chip, where a single qubit is carried by an atomic ensemble instead of a single atom. Two electronic ground states of the atoms are involved, one state with one or no atom is used to represent the qubit and the other state is used to hold the residual atoms. One and two-qubit gates are implemented by internal state transition with laser pulse sequences in the presence of the exciting blockade mechanism. A scalable quantum computer can be realized by one-dimensional or two-dimensional atomic lattices on an atom chip.