Three-dimensional optical microcavity type single photon source

A single-photon source and three-dimensional optics technology, applied in the field of quantum information, can solve the problems of weakening the light confinement ability of optical microcavities, and achieve the effects of reducing the number and uniformity requirements, good confinement ability, and suppression of background

Inactive Publication Date: 2007-10-24
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
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  • Claims
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Problems solved by technology

This structure can play a good role in confining the light in the optical microcavity in two dimensions in the plane, but in the vertical direction, it can only be confined when the light

Method used

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  • Three-dimensional optical microcavity type single photon source
  • Three-dimensional optical microcavity type single photon source
  • Three-dimensional optical microcavity type single photon source

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Embodiment Construction

[0019] The following uses CdSe quantum dots as an example to describe the specific implementation of the present invention in detail with reference to the accompanying drawings:

[0020] 1. Preparation of nanomolar CdSe quantum dot solution

[0021] Dilute the CdSe solution prepared by conventional chemical methods with a solvent such as chloroform 10 4 ~10 6 Times, its concentration is lower than nanomole per liter (nmol / L).

[0022] 2. Film system design

[0023] According to the strongest fluorescence peak position of the quantum dots at 585nm, the F-P structure optical cavity film system with the bandpass peak position completely consistent with the fluorescence peak position is designed using conventional film system design methods:

[0024] (LH) 10 2L(HL) 10 ,

[0025] Where H is high refractive index Ta 2 O 5 Film layer, L is low refractive index SiO 2 Film layer, its optical thickness is λ 0 / 4, λ 0 The center wavelength is 585nm.

[0026] 3. Two-dimensi...

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Abstract

This invention discloses a three-dimensional optics micro chamber single photon source, which comprises the underlay, micro chamber film tightly combined with the underlay and the quanta spots imbedded in the micro chamber. It is characterized by the following: to etch a cylinder air column with the film thickness in shape of right angle grid circle distribution in the micro chamber film. The advantages of this invention lie in the following: the optics micro chamber has good limiting ability in all directions to facilitate the single quanta optimization choice from multiple quanta to form the single quanta source.

Description

Technical field [0001] The invention relates to quantum information, single photon source, and optical microcavity. Specifically, it refers to a single-photon source composed of quantum dots embedded in a three-dimensional optical microcavity. Background technique [0002] Quantum properties have unique functions in the field of information. They may break through the limits of existing classical information systems in terms of increasing computing speed, ensuring information security, increasing information capacity, and improving detection accuracy, and a new branch of discipline was born. -Quantum Information Science. It is the product of the combination of quantum mechanics and information science, including: quantum cryptography, quantum communication, quantum computing and quantum measurement, etc. In recent years, important breakthroughs have been made in theory and experimentation, which has caused governments, scientific and technological circles and the information indu...

Claims

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Application Information

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IPC IPC(8): G02F1/00
Inventor 陆卫王少伟陈平平李宁张波李志锋陈效双
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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