Multi-pair two-component quantum entangled state micro-ring resonant cavity and preparation method thereof

A micro-ring resonator and quantum technology, applied in nonlinear optics, micro-nano optics, and quantum optics, can solve problems such as difficult integration, inability to satisfy phase matching conditions at the same time, and failure to prepare entangled states.
CN112748621AActive Publication Date: 2021-05-04SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2021-05-04

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Abstract

The invention provides a multi-pair two-component quantum entangled state micro-ring resonant cavity and a preparation method thereof. The micro-ring resonant cavity is composed of a coupling channel and a micro-ring, and the micro-ring is a micro-ring with a third-order nonlinear effect; and continuous light is used for pumping the micro-ring resonant cavity, pumping light enters the coupling channel from an input port provided by the coupling channel, part of the pumping light in the coupling channel is coupled into the micro-ring, multiple pairs of signal light and idle light are generated after interaction, and the generated multiple pairs of signal light and idle light meet the entanglement relation. The micro-ring resonant cavity disclosed by the invention can be made of a Si3N4 material with relatively high nonlinear coefficient, high integration level and stable performance. Simulation is carried out on the multi-pair double-component quantum entangled state preparation method provided by the invention, and it is verified that the high-quality multi-pair double-component quantum entangled state can be generated through the multi-pair double-component quantum entangled state preparation method.
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Description

technical field

[0001] The present invention relates to the technical fields of quantum optics, nonlinear optics and micro-nano optics, in particular to a microring resonator with multiple pairs of two-component quantum entangled states, and a method for preparing multiple pairs of quantum entangled states using the microring resonant cavity Design. Background technique

[0002] Quantum entanglement is one of the most important features of quantum mechanics. It describes the correlation between particles that is not limited by distance. Two or more particles that have an entangled relationship, no matter how far apart these particles are in space, if When the state of one particle changes, the state of other particles will also change. Quantum entanglement is an essential quantum resource for many applications in quantum information processing, and is widely used in quantum precision metrology, quantum key distribution, quantum teleportation, and quantum dense coding. [0...

Claims

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