Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

All-optical logic device based on quantum dot-double die cavity coupling system

A coupling system and quantum dot technology, applied in the field of all-optical logic devices based on quantum dot-dual-mode cavity coupling system, can solve the problems of difficult to design photonic devices, unable to realize all-optical logic devices, difficult to integrate, etc.

Active Publication Date: 2016-03-16
BEIJING UNIV OF POSTS & TELECOMM
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single-mode cavity can only accommodate one optical mode, that is, the quantum dot can only couple with a single polarization mode at the resonant frequency, and the interaction in the system is relatively fixed and simple, which makes it difficult to design photonic devices with complex functions
At the same time, the quantum dot-single-mode cavity is often controlled by an external magnetic field that is not easy to integrate, and it is impossible to realize an all-optical logic device.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • All-optical logic device based on quantum dot-double die cavity coupling system
  • All-optical logic device based on quantum dot-double die cavity coupling system
  • All-optical logic device based on quantum dot-double die cavity coupling system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0050] The quantum dot-dual-mode microcavity used in the embodiment of the present invention has a structure in which a dual-mode microcavity is coupled with a two-level neutral quantum dot. The cavity modes are two modes with equal wavelengths but orthogonal polarizations. Both modes resonate with the quantum dot, respectively. At the same time, two Gaussian pulsed laser beams whose polarization is the same as the two modes of the microcavity and whose wavelength...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention discloses two all-optical logic devices. The first all-optical logic device comprises two optical waveguides each having a delayer, a quantum dot-double die cavity, a first mode photon detector and a second mode photon detector, wherein the difference between a first delay parameter of the first optical waveguide and a second delay parameter of the second optical waveguide is a specific delayed value (Delta t) set according to a test result. The second full-optical logic device comprises two polarized beam splitter, five optical waveguides without a delayer, three quantum dot-double die cavities, a first mode photon detector and a second mode photon detector, wherein the three quantum dot-double die cavities have the same specific delayed value (Delta t) of an output response optical signal of the mode to an output response optical signal of the other mode when an input optical signal only has one mode optical singal. Based on the quantum destructive interference effect, the all-optical logic device can realize logic functions of non, and, as well as or.

Description

technical field [0001] The invention relates to the field of all-optical logic devices, in particular to an all-optical logic device based on a quantum dot-double-mode cavity coupling system. Background technique [0002] The ultra-high-speed all-optical communication network based on all-optical information processing has the advantages of low energy consumption, large network capacity, high network flexibility and reliability, and has become an important force to promote the development of new networks. At the same time, all-optical switches and all-optical logic devices at the level of a few photons in applications such as quantum information processing and quantum networks have also attracted people's attention and become a research hotspot in recent years. [0003] The nonlinear interaction of light and matter is the physical basis for designing complex photonic devices. Traditional nonlinear effects require strong light intensity, which is not conducive to the integra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02F3/00
CPCG02F3/00
Inventor 叶寒俞重远马申彭益炜张文刘玉敏
Owner BEIJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products