Two-bit Deutsch-Jozsa algorithm using an atomic ensemble

Details Two-bit Deutsch-Jozsa algorithm using an atomic ensemble Two-bit Deutsch-Jozsa algorithm using an atomic ensemble

2006-01-16

arxiv.org/abs/quant-ph/0601105v1

Physics

Quantum Physics

9 pages, 3 figures, 1 table, IOP, submitted

Scientific paper

The first optical proposal for the realization of the two-bit version of the Deutsch-Jozsa algorithm [D. Deutsch and R. Jozsa, Proc. R. Soc. London A {\bf 493}, 553 (1992)] is presented. The proposal uses Stark shifts in an ensemble of atoms and degenerate sources of photons. The photons interact dispersively with an atomic ensemble, leading to an effective Hamiltonian in atom-field basis, which is useful for performing the required two-qubit operations. Combining these with a set of one-qubit operations, the algorithm can be implemented. A discussion of the experimental feasibility of the proposal is given.

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