Quantum Energy Teleportation (QET)
Date: Sunday, April 26, 2015 @ 22:55:53 EDT
Topic: Science


From Phys.org: New theory suggests way to teleport energy long distances

Schematic diagram of (a) vacuum state quantum energy teleportation (QET) protocol and (b) long- distance squeezed-state QET. Credit: arxiv.org/abs/1305.3955

(Phys.org) —A trio of researchers at Tohoku University in Japan, led by Masahiro Hotta, has proposed a new way to teleport energy that allows for doing so over long distances. In their paper published in Physical Review A, the team describes a theory they've developed that takes advantage of the properties of squeezed light or vacuum states to allow for "teleporting" information about an energy state, allowing for making use of that energy—in essence, teleporting energy over long distances.


Abstract
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 protocol is limited by the distance between two protocol users; the upper bound of the energy being inversely proportional to the distance. In this paper, we prove that introducing squeezed vacuum states with local vacuum regions between the two protocol users overcomes this limitation, allowing energy teleportation over practical distances.

Full article: http://phys.org/news/2014-01-theory-teleport-energy-distances.html






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