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No Slide Title
No Slide Title

Slides. - Shelby Kimmel
Slides. - Shelby Kimmel

The Quantum Theory of the Submicroscopic World
The Quantum Theory of the Submicroscopic World

Diapositiva 1 - Applied Quantum Mechanics group
Diapositiva 1 - Applied Quantum Mechanics group

Quantum coherence: myth or fact?
Quantum coherence: myth or fact?

1 - HST
1 - HST

... Click here for animation of this event. Here is a question you might have asked: How has the 4.6 GeV negative track from the collision been identified as a pion? After all, it is highly relativistic ( p 2 c 2  m 2 c 4 for   , K  and p masses) and leaves no clue such as a decay or an interaction. ...
Quantum computers - start [kondor.etf.rs]
Quantum computers - start [kondor.etf.rs]

... • Circuit representation ...
Complete Lecture Notes
Complete Lecture Notes

... By the turn of the 19th century, classical physics had reached its summit. The nature and motion of particles and matter was properly accounted for. Newtonian mechanics was put in a solid mathematical framework (Lagrange, Hamilton) and the properties of radiation was covered by Maxwell’s equations. ...
The Schrödinger Wave Equation
The Schrödinger Wave Equation

... The requirement that ψ(x) → 0 as x → ±∞ is an example of a boundary condition. Energy quantization is, mathematically speaking, the result of a combined effort: that ψ(x) be a solution to the time independent Schrödinger equation, and that the solution satisfy these boundary conditions. But both th ...
Copenhagen Interpretation
Copenhagen Interpretation

fizika kvantum
fizika kvantum

MS-word - Table of Contents
MS-word - Table of Contents

Photon Localization Revisited
Photon Localization Revisited

pdf file - UTEP Computer Science
pdf file - UTEP Computer Science

... remained a heuristic idea until the early 20th century, when quantum theory and later quantum mechanics appeared. As early as 1913, Bohr used his quantum theory to provide a reasonably successful theoretical explanation for the periodic system. This was followed by more accurate versions by himself ...
Entanglement, Distillation and Quantum Repeaters
Entanglement, Distillation and Quantum Repeaters

... In order to create long-range, highly entangled states, distillation and quantum teleportation have been combined into Quantum Repeaters (QR), which use iterative techniques. [2] QRs have orginially been derived for the finite-dimensional case and it is not yet clear, if and how they can be adopted ...
Item VIII
Item VIII

Appendix. Atoms and Molecule
Appendix. Atoms and Molecule

Decoherence at absolute zero
Decoherence at absolute zero

Quantum Information—S. Lloyd, L. Levitov, T. Orlando, J. H. Shapiro, N.C. Wong
Quantum Information—S. Lloyd, L. Levitov, T. Orlando, J. H. Shapiro, N.C. Wong

... Quantum mechanics offers a variety of opportunities both to protect information (quantum cryptography) and to improve the precision of measurement, positioning and timing techniques. We are developing the world’s brightest source of narrow band entangled photons and are planning to use this source t ...
Physics 571 Lecture #27 - BYU Physics and Astronomy
Physics 571 Lecture #27 - BYU Physics and Astronomy

(pdf)
(pdf)

... In classical mechanics, every bit of information about a particle is encoded in its position and momentum; if we know what outside forces has acted on the particle, then we can determine where the particle was, where it will be, its acceleration, and so on. We can therefore describe the state of a p ...
A brief history of the mathematical equivalence between the two
A brief history of the mathematical equivalence between the two

How to test the “quantumness” of a quantum computer?
How to test the “quantumness” of a quantum computer?

Reversible universal quantum computation within translation
Reversible universal quantum computation within translation

The Wave Function
The Wave Function

< 1 ... 137 138 139 140 141 142 143 144 145 ... 329 >

Particle in a box



In quantum mechanics, the particle in a box model (also known as the infinite potential well or the infinite square well) describes a particle free to move in a small space surrounded by impenetrable barriers. The model is mainly used as a hypothetical example to illustrate the differences between classical and quantum systems. In classical systems, for example a ball trapped inside a large box, the particle can move at any speed within the box and it is no more likely to be found at one position than another. However, when the well becomes very narrow (on the scale of a few nanometers), quantum effects become important. The particle may only occupy certain positive energy levels. Likewise, it can never have zero energy, meaning that the particle can never ""sit still"". Additionally, it is more likely to be found at certain positions than at others, depending on its energy level. The particle may never be detected at certain positions, known as spatial nodes.The particle in a box model provides one of the very few problems in quantum mechanics which can be solved analytically, without approximations. This means that the observable properties of the particle (such as its energy and position) are related to the mass of the particle and the width of the well by simple mathematical expressions. Due to its simplicity, the model allows insight into quantum effects without the need for complicated mathematics. It is one of the first quantum mechanics problems taught in undergraduate physics courses, and it is commonly used as an approximation for more complicated quantum systems.
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