Quantum memory device

Abstract

A quantum memory device relates to the field of quantum information technology, including a pump light module, a quantum memory module, and an orbital angular momentum analysis module; the pump lightmodule is for producing pump light and generating a signal photon of an optical signal to be stored and outputting pump light and signal photons to the quantum memory module through a quantum channel;the quantum memory module is configured to combine received pump light and signal photons and convey signal photons to the orbital angular momentum analysis module for analysis; the orbital angular momentum analysis module is used for analyzing orbital angular momentum quantum states of received signal photons to enable multi-mode operation of high-dimensional quantum state storage and spatial domain. The present invention provides a spatially multiplexed quantum storage device that is easier to implement and can store high-dimensional quantum states.

Description

technical field [0001] The invention relates to the technical field of quantum information, in particular to a quantum storage device. Background technique [0002] Quantum information technology provides a revolutionary solution to secure communication and high-performance computing. People can use quantum key distribution to realize unconditional security key distribution based on the principle of quantum mechanics. Quantum parallelism enables quantum computing to achieve much higher than The computing power of classical computers; photons are the natural information carriers of quantum networks. However, due to the exponential relationship between the loss of photons transmitted in optical fibers and the transmission distance, quantum communication cannot break through in long-distance. The quantum storage device is the core component of the quantum remote communication network. The existing relatively mature quantum storage devices include gaseous atom systems and single...

AI Technical Summary

Problems solved by technology

[0002] Quantum information technology provides a revolutionary solution to secure communication and high-performance computing. People can use quantum key distribution to realize unconditional security key distribution based on the principle of quantum mechanics. Quantum parallelism enables quantum computing to achieve much higher than The computing power of classical computers; photons are the natural information carriers of quantum networks. However, due to the exponential relationship between the loss of photons transmitted in optical fibers and the transmission distance, quantum communication cannot break through in long-distance. The quantum storage device is the core component of the quantum remote communication network. The existing relatively mature quantum storage devices include gaseous atom systems and single bound atom systems, but they have narrow storage bandwidth, short storage life or storage Dimensions and low number of reuse patterns

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