- #1
BLUE_CHIP
I was wondering if anybody had any information on Quantum Mechanical Transistors.
What Are Quantum Mechanical Transistors?
- Thread starter BLUE_CHIP
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Discussion Overview
The discussion revolves around Quantum Mechanical Transistors, with participants seeking information and clarification on the topic, including specific types such as quantum dots and Double Electron Layer Tunneling Transistors. The scope includes theoretical concepts and practical applications in electrical engineering.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant expresses a general curiosity about Quantum Mechanical Transistors and requests information beyond simple search engine results.
- Another participant notes that all transistors are inherently quantum mechanical, questioning the specific information being sought.
- A graduate student in electrical engineering provides a detailed explanation of quantum dots and single electron transistors, describing their operation and sensitivity to voltage changes.
- A later post mentions the Double Electron Layer Tunneling Transistor (DELTT) and requests technical information and diagrams related to its quantum mechanics.
Areas of Agreement / Disagreement
Participants have not reached a consensus on what specific information is being sought regarding Quantum Mechanical Transistors, leading to some confusion and differing interpretations of the topic.
Contextual Notes
There are limitations in the discussion regarding the clarity of what constitutes "Quantum Mechanical Transistors," as participants have different understandings and focus on various aspects of the topic.
- #2
- #3
BLUE_CHIP
The first time that I checked this thread which was a very very very long time ago, i didnt notice that wimms had posted a google search.
Please can someone give me another link or more information, and not another seach engine with 'Quantum Mechanical Transistors' typed in the search bar.....
Please can someone give me another link or more information, and not another seach engine with 'Quantum Mechanical Transistors' typed in the search bar.....
- #4
Integral
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Since ALL transistors are Quantum Mechanical it is not not clear, to me, just what you are looking for.
- #5
QuantumCowboy
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You're talking about quantum dots (or single electron transistors). I'm a graduate student in electrical engineering and this is my field; so, you're in luck.
Basically, they work as follows. You've got a small quantum well which confines electrons in all three dimensions... they have zero degrees of freedom. The wavefunctions of the electrons take on modes in these quantum wells. By changing the energy level in the well, you can change the occupancy of the states in the well. Changing the energy level in the well simply involves applying a voltage to a gate that is capacitively coupled to this system. If the gate is properly coupled to the system, then the transport properties of the system will be extremely to even the slightest change in voltage on the gate. In fact these systems can be made so as to detect a single electron.
Let me know if you have anymore questions.
QuantumCowboy
Basically, they work as follows. You've got a small quantum well which confines electrons in all three dimensions... they have zero degrees of freedom. The wavefunctions of the electrons take on modes in these quantum wells. By changing the energy level in the well, you can change the occupancy of the states in the well. Changing the energy level in the well simply involves applying a voltage to a gate that is capacitively coupled to this system. If the gate is properly coupled to the system, then the transport properties of the system will be extremely to even the slightest change in voltage on the gate. In fact these systems can be made so as to detect a single electron.
Let me know if you have anymore questions.
QuantumCowboy
- #6
BLUE_CHIP
This is superb 
This is the product which I was originally referring to is:
I know its a very old news release however I was just wondering if there was any tech info on the quantum mechs of it.
If u had any diagrams or text that you could point me to I would be very greatfull.
Ta, QuantumCowboy
This is the product which I was originally referring to is:
I know its a very old news release however I was just wondering if there was any tech info on the quantum mechs of it.
If u had any diagrams or text that you could point me to I would be very greatfull.
Ta, QuantumCowboy
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