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<quote>So the quantity physicists are interested in is the difference between the energy of the quantum system and its passive states. All that energy is potentially extractable to do work elsewhere.

Alicki and Fannes show that the extractable work is generally less than the thermodynamic limit. In other words, they show that this kind of system isn’t perfect.

However, the twist is that Alicki and Fannes say things change if you have several identical quantum batteries that are entangled.

Entanglement is a strange quantum link that occurs when separate particles have the same wavefunction. In essence, these particles share the same existence.

Entanglement leads to all kinds of bizarre phenomena such as the “spooky action at a distance” that so puzzled Einstein.

Alicki and Fannes show that when quantum batteries are entangled they become much better. That’s essentially because all the energy from all the batteries can be extracted at once. “Using entanglement one can in general extract more work per battery,” they say.

In fact, as the number of entangled batteries increases, the performance becomes arbitrarily close to the thermodynamic limit. In other words, a battery consisting of large numbers of entangled quantum batteries could be almost perfect.<end quote>

Quantum mechanics is like something I would dream up on a bad trip.

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