Category Archives: Optics

A single photon can be in as many as four places at the same time

Posted on April 26, 2011 by

Vladan Vuletic, “Quantum physics: Entangled quartet,” News & Views, Nature 468: 384–385, 18 November 2010, summarizes the paper K. S. Choi, A. Goban, S. B. Papp, S. J. van Enk & H. J. Kimble, “Entanglement of spin waves among four … Continue reading →

Posted in Optics, Physics, Quantum Mechanics, Science, Uncategorized | Tagged , , | 6 Comments

Quantum computers protected by space-time cloaking devices

Posted on November 16, 2010 by

Quantum computers are very fragile devices, the accidental observation of any quantum property can disrupt calculations before they have been completed. ¿Could a quantum computer be hidden inside a protecting spatiotemporal cloaking device? Such is the proposal of Ortwin Hess, a researcher … Continue reading →

Posted in News, Optics, Physics, Quantum Computers, Quantum Mechanics, Science, Theoretical Proposal | Tagged , | 1 Comment