DARPA Reports Quantum Teleportation Breaktrough


Picture credit: DARPA

Star Trek fans ! DARPA says the teleporter can be activated – Beam me up, Scotty ! : https://www.youtube.com/watch?v=jDFI87zn9t0

DARPA, the Defense Advanced Research Projects Administration, purports to show the public what it is doing with taxpayer money DARPA Catalog and Research. The DARPA Open Catalog is a public web portal that organizes and shares the publicly releasable results of DARPA research in the form of software, peer-reviewed publications, data and experimental details. The Catalog is available at http://opencatalog.darpa.mil/.

The QE (not unlimited money printing by the Fed through quantum easing) or Quantum Entanglement logjam started to clear in 2015. The seminal paper first expounding the idea of quantum teleportation was published by C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wootters in 1993. Since then, quantum teleportation was first realized with single photons and later demonstrated with various material systems such as atoms, ions, electrons and superconducting circuits. The breakthroughs highlighted relate to the movement of data and not physical particles, yet as Wikipedia explains:

Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location. Because it depends on classical communication, which can proceed no faster than the speed of light, it cannot be used for faster-than-light transport or communication of classical bits. While it has proven possible to teleport one or more qubits of information between two (entangled) atoms, this has not yet been achieved between molecules or anything larger. Quantum teleportation is not a form of transportation, but of communication; it provides a way of transporting a qubit from one location to another, without having to move a physical particle along with it. However, quantum teleportation of particles has been theorized to also be possible, and to perhaps be an explanation for the teleportation-like effects seen in superconductivity and superfluidity.

Photon: from Wikipediaquantum_teleportation_diagram

Original source: Bennett et al., Teleporting an Unknown Quantum State via Dual Classical and Einstein-Podolsky-Rosen Channels, Phys. Rev. Lett. 70, 1895-1899 (1993)

In October 2015, scientists from the Kavli Institute of Nanoscience of the Delft University of Technology reported that the quantum nonlocality phenomenon is supported at the 96% confidence level based on a “loophole-free Bell test” study. These results were confirmed by two studies with statistical significance over 5 standard deviations which were published in December 2015. Two separate DARPA-funded studies by physicists based in China and Calgary, Canada have now confirmed that not only is quantum teleportation a real phenomenon but they also demonstrated that it’s a workable technology that could one day help build an unhackable quantum communication systems to span great distances. The promise of a truly secure Internet based on quantum cryptography using repeaters to amplify the signals beyond the point to point transmissions excites the BBC.

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