Quantum Communication between Multiplexed Atomic Quantum Memories

Abstract

The use of multiplexed atomic quantum memories (MAQM) can significantly enhance the efficiency to establish entanglement in a quantum network. In the previous experiments, individual elements of a quantum network, such as the generation, storage and transmission of quantum entanglement have been demonstrated separately. Here we report an experiment to show the compatibility of these basic operations. Specifically, we generate photon-atom entanglement in a $6\times 5$ MAQM, convert the spin wave to time-bin photonic excitation after a controllable storage time, and then store and retrieve the photon in a second MAQM for another controllable storage time. The preservation of quantum information in this process is verified by measuring the state fidelity. We also show that our scheme supports quantum systems with higher dimension than a qubit.

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Cited by in corpus (13)

• Twin-Field Quantum Key Distribution over 511 km Optical Fiber Linking two Distant Metropolitans
• Transmission of light-matter entanglement over a metropolitan network
• Optical quantum memory for noble-gas spins based on spin-exchange collisions
• A network-ready random-access qubits memory
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• Massively-multiplexed generation of Bell-type entanglement using a quantum memory
• A solid-state temporally multiplexed quantum memory array at the single-photon level
• Generation of quantum coherence for continuous variables between causally disconnected regions in dilaton spacetime
• High dimensional entanglement between a photon and a multiplexed atomic quantum memory
• Entanglement distribution with wavevector-multiplexed quantum memory
• Scaling W state circuits in the qudit Clifford hierarchy
• Optimizing quantum codes with an application to the loss channel with partial erasure information
• All-optical neural network quantum state tomography