Quantum repeater with Rydberg blocked atomic ensembles in fiber-coupled cavities

Abstract

We propose and analyze a quantum repeater architecture in which Rydberg blocked atomic ensembles inside optical cavities are linked by optical fibers. Entanglement generation, swapping and purification are achieved through collective laser manipulations of the ensembles and photon transmission. Successful transmission and storage of entanglement are heralded by ionization events rather than by photon detection signal used in previous proposals. We demonstrate how the high charge detection efficiency allows for a shortened average entanglement generation time, and we analyze an implementation of our scheme with ensembles of Cs atoms.

References in corpus (4)

• Dipole blockade in a cold Rydberg atomic sample
• Quantum computing with collective ensembles of multi-level systems
• Efficient quantum repeater based on deterministic Rydberg gates
• Conditional dynamics induced by new configurations for Rydberg dipole-dipole interactions

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• Rydberg-interaction gates via adiabatic passage and phase control of driving fields
• Spontaneous emission and energy shifts of a Rydberg rubidium atom close to an optical nanofiber
• Semi-Deterministic Entanglement between a Single Photon and an Atomic Ensemble
• Heralded high-efficiency quantum repeater with atomic ensembles assisted by faithful single-photon transmission
• Spontaneous emission of a sodium Rydberg atom close to an optical nanofibre
• High teleportation rates using cold-atom ensemble based quantum repeaters with Rydberg blockade
• Collective dynamics in a laser-pumped mixture of two atomic ensembles