Dynamical entanglement purification using chains of atoms and optical cavities
arXiv:1106.3537 · doi:10.1103/PhysRevA.84.042303
Abstract
In the framework of cavity QED, we propose a practical scheme to purify dynamically a bipartite entangled state using short chains of atoms coupled to high-finesse optical cavities. In contrast to conventional entanglement purification protocols, we avoid CNOT gates, thus reducing complicated pulse sequences and superfluous qubit operations. Our interaction scheme works in a deterministic way, and together with entanglement distribution and swapping, opens a route towards efficient quantum repeaters for long-distance quantum communication.
13 pages, 6 figures, revised version with incorporated erratum
References in corpus (18)
- The Quantum Internet
- Demonstration of a neutral atom controlled-NOT quantum gate
- Experimental demonstration of a BDCZ quantum repeater node
- Surface code quantum communication
- Cooling to the Ground State of Axial Motion for One Atom Strongly Coupled to an Optical Cavity
- Coherence properties and quantum state transportation in an optical conveyor belt
- Deterministic loading of individual atoms to a high-finesse optical cavity
- A Hybrid Long-Distance Entanglement Distribution Protocol
- Quantum repeaters based on Rydberg-blockade coupled atomic ensembles
- Efficient quantum repeater based on deterministic Rydberg gates
- Rate analysis for a hybrid quantum repeater
- A high bandwidth quantum repeater
- Controlled insertion and retrieval of atoms coupled to a high-finesse optical resonator
- Quantum jumps and spin dynamics of interacting atoms in a strongly coupled atom-cavity system
- Imprinting Patterns of Neutral Atoms in an Optical Lattice using Magnetic Resonance Techniques
- Temporally multiplexed quantum repeaters with atomic gases
- Entanglement purification without controlled-NOT gates by using the natural dynamics of spin chains
- Fast Entanglement Distribution with Atomic Ensembles and Fluorescent Detection
Cited by in corpus (9)
- Deterministic polarization entanglement purification using time-bin entanglement
- High-fidelity entanglement purification using chains of atoms and optical cavities
- Hybrid quantum repeater with encoding
- Multiphoton-state-assisted entanglement purification of material qubits
- Dynamical quantum repeater using cavity-QED and optical coherent states
- Performance of entanglement purification including maximally entangled mixed states
- Entanglement Purification with the Exchange Interaction
- Entanglement Distillation using the Exchange Interaction
- Multipartite entanglement purification for three-level trapped atom systems