Target eye optical resonant cavity

A technology of resonant cavity and vision, applied in the structure of optical resonant cavity, laser, laser parts and other directions, can solve the problems of low spontaneous emission rate of quantum dots, low quality of entangled light source, low efficiency of entangled photon collection, etc., to improve the whole isotropy, enhanced spontaneous emission rate, and improved collection efficiency

Pending Publication Date: 2020-10-30
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0004] The present disclosure provides a bullseye optical resonant cavity to solve technical problems in the prior art, such as low collection efficiency of single-polarized single photons, low collection efficiency of entangled photon pairs, low quality of entangled light source obtained, and low spontaneous emission rate of quantum dots.

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  • Target eye optical resonant cavity
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Embodiment Construction

[0032] At present, a large number of optical resonant cavities are used to integrate with quantum dots to break through the above difficulties, however, this is a great challenge to the design of the cavity. For entangled light sources, first, the structure of the optical resonant cavity needs to improve the light collection efficiency at the top of the structure without breaking the symmetry of polarization. This requires that the structure can produce transverse axisymmetric constraints and longitudinal asymmetric constraints on the light field. The longitudinal asymmetric constraint is used to increase the proportion of light radiated to the top, and the horizontal and vertical constraints can jointly reduce the far-field emission angle of the light field to improve the collection efficiency. Among them, the requirement that the transverse constraints must be axisymmetric is to not destroy the polarization degeneracy, so as not to reduce the entanglement fidelity of photon ...

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Abstract

The present disclosure provides a target eye optical resonant cavity. The target eye optical resonant cavity comprises: a grating layer (100) comprising a central cylinder and a plurality of layers ofBragg rings coaxial with the central cylinder, a gap being provided between every two adjacent Bragg rings and between the central cylinder and the Bragg rings, the central cylinder being a cylinderor an elliptic cylinder; and a reflecting layer (200), wherein one end surface of the reflecting layer (200) is connected with one end surface of the grating layer (100). The structure provided by theinvention can provide a high-quality single photon source and an entangled light source, enhances the spontaneous radiation rate of quantum dots, improves the isotropy of photons, and improves the collection efficiency of the light source.

Description

technical field [0001] The disclosure relates to the field of solid-state quantum optics, in particular to a bullseye optical resonant cavity. Background technique [0002] Due to its excellent optical selection and resonance enhancement performance, the optical resonant cavity has been used by a large number of researchers for the optimization of quantum light sources. High-quality single-photon sources and entangled light sources are the cornerstones of optical quantum computing and quantum communication. A high-quality single-photon source generally has the following necessary characteristics: excellent single-photon performance, to ensure that only one pair of photons is generated at a certain moment; high collection efficiency, to ensure that as many photons as possible can be collected; high integrity The same sex, the photons radiated at different times must be the same in all degrees of freedom. In addition to the characteristics of high-quality entangled light sou...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/34H01S5/12H01S5/028
CPCH01S5/028H01S5/1231H01S5/3412
Inventor 王碧莹何玉明陆朝阳潘建伟
Owner UNIV OF SCI & TECH OF CHINA
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