Nanoparticle Waveguide Backreflector Single-Photon Source
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Solution Overview
Problem
Current technologies face challenges in generating photons on demand at specific locations and efficiently detecting and capturing photons for use in quantum computing, particularly in creating single-photon sources and nonlinear devices.
Innovation Solution
A device comprising a nanoparticle coupled to a waveguide and a backreflector, where the nanoparticle can emit photons on demand, utilizing semiconductor materials and photonic crystal fibers to enhance photon emission and detection efficiency, with precise alignment and optical excitation techniques to optimize photon generation and collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional semiconductor wafer etching is used to create opto-electronic circuits, then circuit fabrication is achieved through material removal, but device size is limited by etching process constraints and cannot reach molecular-level dimensions
Solution Approach 1:
The patent replaces the mechanical etching process with a chemical self-assembly approach. Molecules spontaneously organize into desired circuit structures through chemical bonding and self-organization, eliminating the need for material removal and enabling molecular-scale device construction.
Solution Approach 2:
The system uses self-assembling molecules that automatically organize into functional circuit structures without external intervention. The molecules possess inherent properties that guide their self-organization into precise spatial arrangements, enabling fabrication at the molecular level.
2Reliability
If photons are used to convey quantum information, then quantum computing capabilities are enhanced, but the ability to generate photons on demand at specific locations and efficiently detect/capture them remains challenging
Solution Approach 1:
The patent creates localized photonic structures with specific optical properties at precise locations. Waveguides and resonators are positioned to confine and manipulate photons at specific spatial points, enabling on-demand photon generation and detection at targeted locations within the quantum circuit.
Solution Approach 2:
The system uses intermediate photonic structures such as waveguides, resonators, and coupling elements that mediate between photon sources and detectors. These intermediaries facilitate efficient photon transfer, confinement, and manipulation, solving the challenge of reliable photon generation and detection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the generation of photons on demand and improves the efficiency of photon detection, facilitating the development of single-photon sources and nonlinear devices for quantum computing applications.
Implementation Method 1
nanoparticle can emit photons on demand
Implementation Method 2
waveguide
Data Source
AI summary
A nanoparticle is able to emit single photons. A waveguide is coupled to the nanoparticle and able to receive the single photons. A backreflector is optically coupled to the waveguide and configured to reflect the single photons toward the waveguide.