Creation of high-quality long-distance entanglement with flexible resources

Abstract

We present a quantum repeater protocol that generates the elementary segments of entangled photons through the communication of qubus in coherent states. The input photons at the repeater stations can be in arbitrary states to save the local state preparation time for the operations. The flexibility of the scheme accelerates the generation of the elementary segments (close to the exact Bell states) to a high rate for practical quantum communications. The entanglement connection to long distances is simplified and sped up, possibly realizing an entangled pair of high quality within the time in the order of that for classical communication between two far-away locations.

9 pages, 5 figures

References in corpus (12)

• Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories
• Long-Distance Entanglement Distribution with Single-Photon Sources
• Multimode Memories in Atomic Ensembles
• Hybrid quantum repeater based on dispersive CQED interactions between matter qubits and bright coherent light
• Robust and Efficient Quantum Repeaters with Atomic Ensembles and Linear Optics
• A fast and robust approach to long-distance quantum communication with atomic ensembles
• A high bandwidth quantum repeater
• Scheme for generating coherent state superpositions with realistic cross-Kerr nonlinearity
• Quantum memory for images - a quantum hologram
• Robust photonic entanglement distribution via state-independent encoding onto decoherence-free subspace
• Implementation of quantum operations on single photon qudits
• Entanglement transformation with no classical communication

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• Entanglement robustness and geometry in systems of identical particles
• Generating Bell states and $N$-partite $W$ states of long-distance qubits in superconducting waveguide QED
• Addendum to "Single photon logic gates using minimum resources"
• Preparation and purification of four-photon Greenberger-Horne-Zeilinger state
• Efficient and flexible generation of entangled qudits with cross phase modulation
• Multiple multi-control unitary operations: implementation and applications
• Proposal for a new scheme for producing a two-photon, high dimensional hyperentangled state
• Transfer of quantum states and stationary quantum correlations in a hybrid optomechanical network
• Efficient entanglement concentration for arbitrary less-entangled NOON state assisted with single photon