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Open type ellipsoidal optical resonant cavity and adjusting method thereof

A technology of optical resonance and ellipsoid, applied to the structure/shape of optical resonators, lasers, laser components, etc., can solve the problems of single-photon coupling matching and high single-photon efficiency loss, and achieve the effect of solving efficiency loss

Pending Publication Date: 2022-05-27
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0005] The present disclosure provides an open ellipsoidal optical resonant cavity to solve the problems of high efficiency loss of single photon generated by resonant excitation single photon source and single photon coupling matching

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  • Open type ellipsoidal optical resonant cavity and adjusting method thereof
  • Open type ellipsoidal optical resonant cavity and adjusting method thereof
  • Open type ellipsoidal optical resonant cavity and adjusting method thereof

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Embodiment Construction

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0026] figure 1 It is a schematic cross-sectional view of an open ellipsoid optical resonant cavity provided by an embodiment of the present disclosure. see figure 1 , the present disclosure provides an open ellipsoid optical resonant cavity, comprising: an ellipsoid Bragg reflector 1; a plane Bragg reflector 2, which is arranged on the inwardly concave side of the ellipsoid Bragg reflector 1; a cavity 3 , including the cavity between the ellipsoidal Bragg mirror 1 and the plane Bragg mirror 2, and a single photon source is arranged in the cavity 3. figure 2 It is a top-view electron micrograph of an open ellipsoid optical resonant cavity provided by an embodiment of the present disclosure.

[0027] It can be seen that the ellipsoid Bra...

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Abstract

The invention provides an open type ellipsoid optical resonant cavity. The open type ellipsoid optical resonant cavity comprises an ellipsoid Bragg reflector (1), a plane Bragg reflector (2), a cavity body (3) and a cavity body (4), wherein the cavity body (3) is arranged on the inward concave side of the ellipsoid Bragg reflector (1), and the cavity body (3) comprises a cavity between the ellipsoid Bragg reflector (1) and the plane Bragg reflector (2). The structure provided by the invention can be perfectly coupled with a single photon source through simple adjustment, and is used for generating single photons with extremely low loss efficiency. The invention further provides an adjusting method of the resonant cavity, and coupling of the resonant cavity and the single photon source can be achieved through multi-axis accurate adjustment.

Description

technical field [0001] The present disclosure relates to the field of solid-state quantum optics, and in particular, to an open ellipsoid optical resonant cavity and an adjustment method thereof. Background technique [0002] Single-photon sources are an important part of quantum communication, quantum measurement, and quantum computing. Using the microcavity with the Passel enhancement effect, single photon close to the Fourier transform limit can be generated through the excitation mode of resonance excitation, and the single photon can be extracted and coupled into the single-mode fiber with high efficiency. However, at present, the single-photon extraction efficiency is only about 33% at the highest, which still does not meet the requirement of more than 50% for various quantum computing schemes. The reason for restricting the single-photon extraction efficiency is that, on the one hand, the existing scheme needs to project the left- or right-handed polarized single pho...

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Application Information

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IPC IPC(8): H01S3/081H01S3/08
CPCH01S3/081H01S3/08059H01S3/0813
Inventor 徐莫迟陈思丁星何玉明陆朝阳潘建伟
Owner UNIV OF SCI & TECH OF CHINA
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