Entanglement distillation for three-particle W class states

Abstract

In this paper, we propose two general entanglement distillation protocols, which can concentrate the non-maximally entangled pure W class state. The general protocols are mainly based on the unitary transformation on the auxiliary particle and one of the three entangled particles, and in the second protocol, the entanglement distillation includes two meanings, namely, extracting the concentrated tripartite entangled W state and obtaining the maximally entangled bipartite state from the garbage state, which gives no contribution to the distillation of non-maximally entangled pure W class state. We can make use of the garbage in the distillation process, and make the entanglement waste in quantum communication as small as possible. A feasible physical scheme is suggested based on the cavity QED.

15 pages 2 figures

References in corpus (3)

• Experimental quantum teleportation
• Purification through Zeno-like Measurements
• Quantum teleportation using three-particle entanglement

Cited by in corpus (16)

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• Deterministic LOCC transformation of three-qubit pure states and entanglement transfer
• Generation of pure, ionic entangled states via linear optics
• Z-States Algebra for a Tunable Multi-Party Entanglement-Distillation Protocol
• Generation of atomic entangled states using linear optics
• Optimal concentrating arbitrary partially entangled W states with linear optics