Quantum Maxwell's Demon Paradox: Trick? Or Treat?

Maxwell's Demon has haunted the foundations of physics for over 150 years - and recently it has been messing with quantum technologies. In our latest Paradoxes video, Oxford PhD researcher Maria Violaris explains the classical Maxwell's Demon thought experiment, and the microscopic version known as Szilard's engine. Then she tests out what happens when the demon is quantum, showing you how to code your own quantum Maxwell's Demon as a quantum circuit in Qiskit!

This One Minute Qiskit will also be helpful:

#qiskit #quantumcomputing #learnquantum

[firevavanced]

Nice video! Bigger font and more zoom next time please!

[muskankushwah]

@Maria How do we know that whether it is a slow particle or fast moving particle if we are using a single particle?

[Handelsbilanzdefizit]

In the sub-atomic scale, the deamon wouldn't be able to measure speed AND position of the particle at the same time. Heisenberg forbids this.
So, there's no way to distinguish slow and fast particles, or left and right side of the box. This experiment makes lots of assumptions.
According Mr. Gibbs, the entropy even increases, if you put water into a cup filled with water. Gibbs-Paradox.
So, we also have to clearify the problem with indistinguishable particles. In other words, can we label these particles?
For me, this rises more questions than answers.

[m-j]

Isn't what Maxwell's demon does just the same as evaporative cooling?

[hewaa.babany]

These papers which are independently claiming reversing entropy by mixing Raoult's law with osmosis principle and Extended Gibbs Donnan Equilibrium .

Title of the papers:

Experimental Demonstration of Energy Harvesting by Maxwell's Demon Device

DOI:
....

An Autonomous Mechanical Maxwell's Demon

DOI: