Quantum energy teleportation without a limit of distance

Quantum energy teleportation (QET) is, from the operational viewpoint of distant protocol users, energy transportation via local operations and classical communication. QET has various links to fundamental research fields including black-hole physics, the quantum theory of Maxwell’s demon, and quantum entanglement in condensed-matter physics. However, the energy that has been extracted using a previous QET […]

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Real-space imaging of fractional quantum Hall liquids

Electrons in semiconductors usually behave like a gas―independent particles. However, when confined to two dimensions under a perpendicular magnetic field at low temperatures, they condense into an incompressible quantum liquid. This phenomenon, known as the fractional quantum Hall (FQH) effect1, is a quantum mechanical manifestation of the macroscopic behaviour of correlated electrons that arises when […]

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