Tripartite entanglement transfer from flying modes to localized qubits

Abstract

We investigate the process of entanglement transfer from a three-mode quantized field to a system of three spatially separated qubits each one made of a two-level atom resonantly coupled to a cavity mode. The optimal conditions for entanglement transfer, evaluated by atomic tripartite negativity, are derived for radiation prepared in qubit-like and Gaussian entangled states in terms of field parameters, atom-cavity interaction time, cavity mirror losses, and atomic preparation. For qubit-like states we found that for negligible cavity losses some states may completely transfer their entanglement to the atoms and/or be exactly mapped to the atomic state, whereas for Gaussian states we found a range of field parameters to obtain a large entanglement transfer. The purity of the three-qubit states and the entanglement of two-qubit subsystems are also discussed in some details.

12 pages, 12 figs

References in corpus (10)

• Experimental demonstration of quantum memory for light
• Quantum State Engineering and Precision Metrology using State-Insensitive Light Traps
• A classification of entanglement in three-qubit systems
• Entanglement and purity of two-mode Gaussian states in noisy channels
• Deterministic loading of individual atoms to a high-finesse optical cavity
• Highly Entangled Ground States in Tripartite Qubit Systems
• Entanglement, purity and energy: Two qubits vs Two modes
• Improving the entanglement transfer from continuous variable systems to localized qubits using non Gaussian states
• Multimode entanglement and telecloning in a noisy environment
• Demonstration of a bright and compact source of tripartite nonclassical light

Cited by in corpus (2)

• Sudden death and birth of entanglement beyond the Markovian approximation
• Effect of Phase Factor in the Geometric Entanglement Measure of Three-Qubit States