相关实验视频

Updated: Oct 6, 2025

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

中的三量子位捐赠量子处理器的精密断层扫描

Mateusz T Mądzik^1,2, Serwan Asaad^1,3, Akram Youssry^4,5

¹School of Electrical Engineering and Telecommunications, UNSW Sydney, Sydney, New South Wales, Australia.

|January 20, 2022

概括

研究人员展示了中核旋转的普遍量子逻辑运算. 这一突破通过在核量子位上实现高可靠性纠和操作,为容错处理器铺平了道路.

科学领域:

量子计算和信息处理.
固态量子系统
核旋转物理学

背景情况:

核旋转提供了特殊的量子连贯性和量子信息处理的原子尺度足迹.
由于缺乏可扩展的链接方法和高可靠的多量子比特运算,无法实现核量子比特的全部潜力.

研究的目的:

在纳米电子装置内展示核旋转的通用量子逻辑运算.
在核量子位和共享电子旋转之间实现高可靠性纠.
建立可扩展量子信息处理的可行途径,

主要方法:

在纳米电子装置中使用了离子植入的31P供体核.
通过共享电子旋转传递的几何相实现了核二量子位受控Z门.
用于量子操作的精确表征的门组断层学 (GST).

主要成果:

在核量子比特之间实现了高达94.2%~2.7%的纠贝尔状态.
获得的高平均网关保真率:高达1量子比特的99.95%,高达2量子比特的99.37%.
证明了三量子比特的格林伯格-霍恩-齐林格状态,具有92.5%的保真度,显示了两个原子核和一个共享电子之间的纠.

结论:

中的核旋转正在接近容错量子处理器所需的性能.
已证明的高保真性运算和纠为可扩展的量子信息处理提供了可行的途径.
将电子自旋量子比特合到其他电子或物理地运送它们进一步提高了这种方法的可扩展性.

更多相关视频

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

相关概念视频

Electron Microscope Tomography and Single-particle Reconstruction

Electron Microscope Tomography and Single-particle Reconstruction

Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...

Positron Emission Tomography

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...