检索结果-南通市图书馆

Quantum information and microscopic measuring instruments

Communications in Theoretical Physics 2020年第1期72卷 44-51页

作者： Alexey V Melkikh Ural Federal University YekaterinburgRussia

The consideration of measuring instruments as macroscopic bodies leads to neglect of the microscopic processes that occur during *** disregard is not justified in general *** an example of measurements using microscopic instruments,the scattering of a photon by an electron with electron interference at two slits(Compton effect)was *** amount of information that can be obtained in such a process is inversely proportional to the wavelength of the incident *** large photon wavelengths(soft measurements),the pure state of the electron can be disrupted by an arbitrarily small extent;accordingly,the amount of information extracted in such an experiment is also arbitrarily *** is shown that the energy price for a bit obtained in such a measurement tends toward a constant value for increasing the photon *** instruments can be used in situations where energy costs for measurements are important.

关键词： measurement problem double-slit experiment Von Neumann entropy decoherence compton effect

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

How Does Wave Packet of a Free Particle Yield?

引用

Journal of Modern Physics 2015年第7期6卷 863-868页

作者： Tianhai Zeng School of Physics Beijing Institute of Technology Beijing China

Preparing a particle in a superposition or a wave packet of eigenstates of a physical quantity is to let it interact with a large object. The composite system composed of the particle and the large object evolves into an entangled state. When the state of the large object is considered to be approximately unchanged, the entangled state can be approximately considered as a product state, and then the particle is prepared in an approximate superposed state. We consider the Schrodinger equation for a composite system with interactions between subsystems as a fundamental postulate and a single particle’s Schrodinger equation must be approximately obtained from it. We argue that superposition of states exists only in composite systems. Interaction exchanging some quantities between subsystems makes conservation laws strictly hold, and no wave packet of a free particle yields. With this point, we can also understand the double-slit experiment and the tunnel phenomenon.

关键词： Superposition of Eigenstates Interaction Entangled State Conservation Law double-slit Experiment Tunnel Phenomenon

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Entangled Photon Pairs and Young’s Experiment

引用

Journal of Quantum Information Science 2021年第4期11卷 135-142页

作者： Lewis Nash Marietta GA USA

Bohm’s variation of the Einstein-Podolsky-Rosen thought experiment may be used to reveal the path a photon travels in Young’s experiment without destroying the observed interference pattern. Photons emitted by a light-source with zero spin are incident on a screen with two narrow slits separated by a small distance, with antiparallel polarized photonic spin filters placed in front of both slits. It follows that the slit through which an incident photon passed to form an interference pattern can be determined by performing an intermediate delayed choice measurement. This experimental probe is ideal for penetrating the shroud of mystery surrounding the wave-particle duality exhibited by quantum phenomena.

关键词： double-slit Entangled Wave-Particle Photon Pair Interference

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Quantum Triple-slit Experiment and Dark Energy

引用

Open Journal of Microphysics 2017年第2期7卷 31-35页

作者： Mohamed S. El Naschie Department of Physics University of Alexandria Alexandria Egypt

The experimental discovery of looped light in a three-slit experiment is interpreted as a strong justification of the Peano-Hilbert spacetime model. This in turn entails the existence of a dark energy density in full ... 详细信息

关键词： Triple-slit Experiment Looped Light Peano-Hilbert Spacetime Dark Energy E-Infinity Cantorian Spacetime Quantum double-slit Experiment Ord-El Naschie Quantum Spacetime Model

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：