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# Questions tagged [josephson-junction]

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4 votes
1 answer
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### Inconsistency in microscopic derivation of the Josephson effect?

My question is related to, but different from, other questions in this platform (see this, this and this). One of the few places I have found in literature that provide a microscopic derivation of the ...
• 1,540
3 votes
1 answer
667 views

### Current Voltage characteristic of Josephson Junction

I'm having trouble understanding what the current voltage characteristic of a Josephson Junction looks like. When we first looked at the voltage state of a Josephson Junction we got the following ...
• 31
3 votes
0 answers
178 views

### What can I expect to see in a oscillator exhibiting bifurcation?

I have a program which aims to simulate a Josephson Bifurcation Amplifier. I am currently trying to obtain a plot of the probability of bifurcation as a function of the ratio between the driving and ...
• 3,668
2 votes
0 answers
89 views

### Josephson supercurrent measurement in a lab

This may be a very trivial question but I am a theoretician and can't find the answer to this question for the life of me. Is it possible to actually measure the Josephson supercurrent flowing through ...
• 155
2 votes
0 answers
26 views

• 182
1 vote
1 answer
52 views

### Is Number Operator a Generalized Momentum?

In superconducting circuit, the number operator, $\hat{n}$, and phase operator, $\hat{\varphi}$ are conjugate pairs. Is $\hat{n}$ the canonical momentum, conjugate momentum, and also generalized ...
• 890
1 vote
0 answers
26 views

### Tenfold way symmetry classification for systems with pseudomomentum

For classifying Hamiltonians $H(\vec{k})$ of topological insulators/superconductors in the tenfold way, one has to see whether the Hamiltonians obeys (disobeys) symmetries of the following type (let's ...
1 vote
0 answers
58 views

• 173
0 votes
0 answers
607 views

### What is the difference between a Josephson junction and a superconducting tunnel junction?

I am wondering if there is any difference between a Josephson junctions and superconducting tunnel junctions. I appreciate a good explanation.