Heralded high-efficiency quantum repeater with atomic ensembles assisted by faithful single-photon transmission
arXiv:1511.00095 · doi:10.1038/srep15610
Abstract
Quantum repeater is one of the important building blocks for long distance quantum communication network. The previous quantum repeaters based on atomic ensembles and linear optical elements can only be performed with a maximal success probability of 1/2 during the entanglement creation and entanglement swapping procedures. Meanwhile, the polarization noise during the entanglement distribution process is harmful to the entangled channel created. Here we introduce a general interface between a polarized photon and an atomic ensemble trapped in a single-sided optical cavity, and with which we propose a high-efficiency quantum repeater protocol in which the robust entanglement distribution is accomplished by the stable spatial-temporal entanglement and it can in principle create the deterministic entanglement between neighboring atomic ensembles in a heralded way as a result of cavity quantum electrodynamics. Meanwhile, the simplified parity check gate makes the entanglement swapping be completed with unity efficiency, other than 1/2 with linear optics. We detail the performance of our protocol with current experimental parameters and show its robustness to the imperfections, i.e., detuning and coupling variation, involved in the reflection process. These good features make it a useful building block in long distance quantum communication.
11 pages, 10 figures
References in corpus (20)
- Loss-induced suppression and revival of lasing
- Cold atoms in cavity-generated dynamical optical potentials
- Strong atom-field coupling for Bose-Einstein condensates in an optical cavity on a chip
- Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories
- What is- and what is not- Electromagnetically-Induced-Transparency in Whispering-Gallery-Microcavities
- All-Optical Routing of Single Photons by a One-Atom Switch Controlled by a Single Photon
- Fiber Fabry-Perot cavity with high finesse
- Efficient quantum key distribution over a collective noise channel
- Multiplexed Memory-Insensitive Quantum Repeaters
- One-step deterministic polarization entanglement purification using spatial entanglement
- Long-Distance Entanglement Distribution with Single-Photon Sources
- One-step error correction for multipartite polarization entanglement
- Quantum computing with collective ensembles of multi-level systems
- Robust and Efficient Quantum Repeaters with Atomic Ensembles and Linear Optics
- Faithful qubit transmission against collective noise without ancillary qubits
- Efficient quantum repeater based on deterministic Rydberg gates
- Repeat-until-success quantum repeaters
- Quantum repeaters free of polarization disturbance and phase noise
- Robust quantum repeater with atomic ensembles against phase and polarization instability
- Arbitrary Rotation of a Single Spinwave Qubit in an Atomic-Ensemble Quantum Memory
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