量子网络中非邻近节点之间的量子传输
S L N Hermans1, M Pompili1, H K C Beukers1
1QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, The Netherlands.
Nature
|May 25, 2022
概括
研究人员在量子网络中实现了非邻近节点之间的量子传输. 这一突破为未来的量子互联网应用提供了可靠的量子信息传输.
科学领域:
- 量子信息科学
- 量子网络
背景情况:
- 量子传输是量子互联网的关键,
- 之前的演示仅限于直接连接的节点,因为对纠和量子位一致性的严格要求.
研究的目的:
- 在一个多节点量子网络中展示远程,非邻近节点之间的量子传输.
- 克服阻碍量子网络演示可扩展性的局限性.
主要方法:
- 使用三节点量子网络与光学连接的固态自旋量子位.
- 实现了远程纠生成,中央节点上的纠交换,以及内存中的量子位存储.
- 在纠生成过程中开发了创新的量子位读取程序和主动内存保护.
主要成果:
- 在非邻近节点之间成功执行量子传输.
- 实现了远程传输的真实性,
- 证明了高效的传输,即使是单元效率.
结论:
- 这项工作为可扩展的量子网络提供了一个关键的构建块.
- 这种能力为多节点传输协议和量子互联网应用铺平了道路.
相关概念视频
02:45The Quantum-Mechanical Model of an Atom
48.2K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
48.2K
02:43Quantum Numbers
41.0K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
41.0K
02:32The de Broglie Wavelength
27.5K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
27.5K
02:12Short-distance Transport of Resources
16.5K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.5K
01:42Directionality of Nuclear Transport
3.5K
Ras-related nuclear protein or Ran is a small G protein that cycles between its GTP and GDP bound states. Ran specific regulators, a Ran GTPase Activating Protein or RanGAP present in the cytosol and a Ran guanine nucleotide exchange factor or RanGEF present inside the nucleus regulate GTP/GDP exchange. A high concentration of GTP inside the cells, in addition to this asymmetric distribution of Ran-specific regulators, leads to a higher RanGTP concentration inside the nucleus. This...
3.5K
01:25Network Function of a Circuit
408
Frequency response analysis in electrical circuits provides vital insights into a circuit's behavior as the frequency of the input signal changes. The transfer function, a mathematical tool, is instrumental in understanding this behavior. It defines the relationship between phasor output and input and comes in four types: voltage gain, current gain, transfer impedance, and transfer admittance. The critical components of the transfer function are the poles and zeros.
408