Extensible quantum information processing system and method

An information processing system and information processing method technology, applied in the field of scalable quantum information processing systems, can solve the problems of weak diamond nitrogen-vacancy center coupling and difficulty in generating quantum entanglement

Active Publication Date: 2020-02-07
HUAZHONG UNIV OF SCI & TECH
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects of the prior art, the purpose of the present invention is to solve the technical problem that the coupling between two long-distance diamond nitrogen-vacancy centers is very weak and it is difficult to generate quantum entanglement

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
  • Extensible quantum information processing system and method
  • Extensible quantum information processing system and method
  • Extensible quantum information processing system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like figure 1 As shown, the main body of the device is composed of a substrate, carbon nanotubes, diamond microcolumns and electrodes. The top layer of diamond microcolumns can be prepared from a whole flat diamond sample by etching. First, a diamond substrate is spin-coated. A uniform layer of photoresist, etch a series of grooves on the surface by electron beam etching, and then deposit a layer of gold on the surface, treat the surface with a photoresist stripper, and then process it by reactive ion etching technology After cleaning the surface, diamond microcolumns can be obtained.

[0050] The samples of the substrate, carbon nanotubes, diamond microcolumns and the equipment required for subsequent operations are placed in the cryogenic system. Control the prepared diamond microcolumn sample so that it is parallel to the substrate where the carbon nanotubes are placed, place the bent carbon nanotubes on the insulating substrate and contact the source and drain elec...

Embodiment 2

[0053] The carbon nanotube double quantum dot system is opposite to the nitrogen-vacancy center of the diamond, the distance is about 6 nanometers, the radius of the carbon nanotube is 1 nanometer, and there is a dipole interaction between the electrons. The coupling Hamiltonian of double quantum dots in the (1,1) state to electrons in nitrogen-vacancy centers can be written as:

[0054]

[0055] here, and Denote the Pauli vectors of the nitrogen-vacancy center electron spin and the quantum dot electron spin-orbit, respectively; where ξ=g || sin 2 α+g ⊥ cos 2 α,η=(g || -g ⊥ )sinαcosα;Ω j Indicates the strength of the external drive; ε=μ B B z / 2, where B z Indicates the magnitude of the external magnetic field, g s Indicates the Landes g factor of the electron, r j Indicates the distance between the electron of the jth nitrogen-vacancy center and the electron of the jth quantum dot. Here it can be assumed that r L = r R , that is, the distance between t...

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

PropertyMeasurementUnit
heightaaaaaaaaaa
diameteraaaaaaaaaa
radiusaaaaaaaaaa
Login to view more

Abstract

The invention discloses an extensible quantum information processing system and method, and relates to the technical field of quantum computing. The structure of the extensible quantum information processing system comprises a columnar diamond sample, an optical system, a microwave system, a magnetic field system, a carbon nanotube double-quantum-dot sample, a low-temperature system, a data acquisition system and an electric control system. The invention provides a carbon nanotube-spinning hybrid quantum system, wherein microwave signals and a magnetic field are applied to an area where each group of nitrogen vacancy centers and quantum dots are located, and magnetic dipole-dipole interaction exists between electrons of each group of nitrogen vacancy centers and the quantum dots; and by controlling a magnetic field and a microwave signal, indirect coupling between two nitrogen-vacancy centers which are spaced by a micron dimension can be realized through the action of the carbon nano tube, and quantum entanglement between the two nitrogen-vacancy centers in a long distance is realized, so that an extensible quantum information processing method is provided.

Description

technical field [0001] The present invention relates to the fields of quantum entanglement and quantum computing, and more specifically, relates to a scalable quantum information processing system and method. Background technique [0002] Similar to classical computers, quantum computers also have the concept of bits—qubits. Classical bits have two states, namely '0' or '1'. For a classical bit, it is in a certain state, not '0'. ' is '1', but the qubit is different, it is in a superposition state, written in the notation of quantum mechanics is |Ψ>=α|0>+β|1>, where α and β are complex numbers, and satisfy| α | 2 +|β| 2 =1. Because the qubit is in a superposition state, it will be affected by time and the environment, and the results of multiple measurements may not be the same. [0003] Assembling a quantum computer requires finding a suitable substance to act as a qubit. The qubit is the carrier of quantum information and calculations, and the decoherence time...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06N10/00
CPCG06N10/00
Inventor 龚牧桑宋婉露刘海滨蔡建明
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap