相关实验视频
Updated: Jun 7, 2025

06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
8.9K
使用量子比特投影测量的非局部性的无限共享
S Sasmal1,2, S Kanjilal3, A K Pan2
1Institute of Fundamental and Frontier Sciences, <a href="https://ror.org/04qr3zq92">University of Electronic Science and Technology of China</a>, Chengdu 611731, China.
Physical review letters
|November 12, 2024
概括
这项研究表明,局部随机辅助的投影测量允许任意的顺序观察者分享量子非局部性. 这克服了以前的局限性,需要通用不清晰的测量.
科学领域:
- 量子信息科学 量子信息科学
- 量子基础的基础 量子基础的基础
- 量子测量理论 量子测量理论
背景情况:
- 量子非局部性的顺序共享通常需要一般化的不清晰的测量.
- 利的测量通常会破坏纠,阻碍非局部性共享.
- 之前的研究表明,多达两名观察者使用投影测量与局部随机性进行非局部共享.
研究的目的:
- 引入一个协议,用于量子非局部性的无限顺序共享.
- 为了使任意数量的观察者能够与单一来源共享非本地性.
- 调查测量不兼容性在非地方性共享中的作用.
主要方法:
- 开发一个局部随机辅助量子比特投射测量协议.
- 对一般化测量进行分析,以保持非局部性利用的纠性.
- 检查测量不兼容性之间的相互作用的测量顺序观察者.
主要成果:
- 在任意数量的顺序观察者之间无限共享量子非局部性的演示.
- 通过通用测量,在共享的两量子比特状态中保存纠.
- 确定测量不兼容性作为无限制非局部共享的关键因素.
结论:
- 在局部随机性的帮助下,投影测量足以实现量子非局部性的无限制的顺序共享.
- 拟议的议定书将非局域的共享范围扩展到以前的限制之外.
- 测量不兼容对于实现和理解无限制的非局域共享至关重要.
相关概念视频
Distance Measurements by Taping
29
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
29
Second Uniqueness Theorem
979
Consider a region consisting of several individual conductors with a definite charge density in the region between these conductors. The second uniqueness theorem states that if the total charge on each conductor and the charge density in the in-between region are known, then the electric field can be uniquely determined.
In contrast, consider that the electric field is non-unique and apply Gauss's law in divergence form in the region between the conductors and the integral form to the...
In contrast, consider that the electric field is non-unique and apply Gauss's law in divergence form in the region between the conductors and the integral form to the...
979
Propagation of Uncertainty from Random Error
653
An experiment often consists of more than a single step. In this case, measurements at each step give rise to uncertainty. Because the measurements occur in successive steps, the uncertainty in one step necessarily contributes to that in the subsequent step. As we perform statistical analysis on these types of experiments, we must learn to account for the propagation of uncertainty from one step to the next. The propagation of uncertainty depends on the type of arithmetic operation performed on...
653
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)
973
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
973
The Pauli Exclusion Principle
35.2K
The arrangement of electrons in the orbitals of an atom is called its electron configuration. We describe an electron configuration with a symbol that contains three pieces of information:
35.2K
The Quantum-Mechanical Model of an Atom
42.0K
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.
42.0K

