Quantum theory and electronic engineering

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Discussion Overview

The discussion revolves around the application of quantum theory in electronics engineering, particularly in relation to quantum information and solid state physics. Participants explore how quantum mechanics influences the design and understanding of electronic components such as transistors, diodes, and other devices.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant seeks information on the real use of quantum theory in electronics engineering, indicating a limited background in quantum mechanics.
  • Some participants suggest that solid state physics is the relevant field for understanding the application of quantum theory in electronics.
  • It is noted that quantum theory is essential for building and modeling very small components, such as transistors and diodes, which are made from silicon atoms.
  • Another participant expands on the topic by mentioning the ability to build crystals one layer of atoms at a time, leading to nanometer scale structures with unique properties.
  • There is a claim that all electronic components, including resistors, capacitors, and inductors, are made at the atomic level, implying that quantum theory can be applied in their design.
  • One participant argues that while transistors and diodes require an understanding of quantum theory, linear devices like resistors and capacitors do not necessarily need it unless designed on a nanoscale.
  • Discussion includes the potential future of electronics in spintronics, which is framed within the context of quantum theory, and mentions new materials like graphene that also require quantum mechanical considerations.
  • It is suggested that engineering curricula may only cover enough quantum theory for practical application in device design, often relying on semi-classical quantum theory.

Areas of Agreement / Disagreement

Participants express a range of views on the necessity of quantum theory for understanding various electronic components. While some agree on its importance for transistors and advanced materials, others contend that basic linear components do not require a deep understanding of quantum mechanics. The discussion remains unresolved regarding the extent to which quantum theory is needed for different types of electronic components.

Contextual Notes

There are limitations in the discussion regarding the assumptions about the applicability of quantum theory to various components, as well as the scope of what is taught in engineering curricula. The conversation also reflects differing opinions on the necessity of quantum mechanics for understanding certain devices.

vead
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I'm an electronics engineering student and I've only had a introductory one-semester course to quantum mechanics, so I don't really have much knowledge on quantum physics
I'd like to get more information about the topic Quantum Information in electronics

what is real use of quantum theory in electronics engineering field ?
 
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The field you want is "solid state physics".
Quantum theory is used to build and model very small components.
 
Simon Bridge said:
The field you want is "solid state physics".
Quantum theory is used to build and model very small components.

that means diode transistor are made with silicon atom
so I read quantum theory for components
 
Not just silicone semiconductors ;)
It is now possible to build crystals one layer of atoms at a time - so you get nanometer scale structures with novel properties.
 
all component like resistor , capacitor , inductor transistor made with atom
we can apply quantum theory to design component
 
vead said:
all component like resistor , capacitor , inductor transistor made with atom
we can apply quantum theory to design component

Transistors and diodes cannot be understood without quantum theory; you will make use of it when you take a solid state devices course.

Resistors, capacitors, inductors and other linear devices don't require quantum theory to understand or design, though if you make them on the nanoscale the models must take quantum theory into account.

In the future electronics may be based on spintronics; this only makes sense when viewed via quantum theory. New materials such as graphene (single or multiple layers) requires quantum theory; etc. When you take an advanced course in thermodynamics/heat transfer you will find that statistical mechanics depends upon quantum theory.

But in an engineering curriculum they will only teach enough quantum theory so that you can understand what is going on; that is, you will understand it well enough to be able to make use of it in the design of devices or systems. Oftimes this requires only semi-classical quantum theory.
 

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