Sequential generation of entangled multi-qubit states

Details Sequential generation of entangled multi-qubit states Sequential generation of entangled multi-qubit states

2005-01-18

arxiv.org/abs/quant-ph/0501096v1

Phys. Rev. Lett. 95, 110503 (2005).

Physics

Quantum Physics

4 pages and 2 figures, submitted for publication

Scientific paper

10.1103/PhysRevLett.95.110503

We consider the deterministic generation of entangled multi-qubit states by the sequential coupling of an ancillary system to initially uncorrelated qubits. We characterize all achievable states in terms of classes of matrix product states and give a recipe for the generation on demand of any multi-qubit state. The proposed methods are suitable for any sequential generation-scheme, though we focus on streams of single photon time-bin qubits emitted by an atom coupled to an optical cavity. We show, in particular, how to generate familiar quantum information states such as W, GHZ, and cluster states, within such a framework.

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