News tagged with quantum information

Quantum storage system with long-term memory

(Phys.org) -- Credit cards which are completely fraud-proof and passports which cannot be forged: quantum physics could make both of these possible. This is explained by the fact that the quantum mechanical ...

Jun 19, 2012
4.7 / 5 (13) 10 | with audio podcast

Single atom stores quantum information

(PhysOrg.com) -- A data memory can hardly be any smaller: researchers working with Gerhard Rempe at the Max Planck Institute of Quantum Optics in Garching have stored quantum information in a single atom. ...

May 02, 2011
5 / 5 (12) 4 | with audio podcast

Two molecules communicate via single photons

Scientists realize one of the most elementary and oldest "gedanken" experiments in modern physics, namely, excitation of a single molecule with a single photon. This paves the way for further investigations ...

Feb 28, 2012
5 / 5 (12) 0 | with audio podcast

New paths into the world of quasiparticles

Quasiparticles can be used to explain physical phenomena in solid bodies even though they are not actual physical particles. Physicists in Innsbruck have now realized quasiparticles in a quantum system and ...

Jul 09, 2014
4.6 / 5 (13) 3

Playing quantum tricks with measurements

A team of physicists at the University of Innsbruck, Austria, performed an experiment that seems to contradict the foundations of quantum theory—at first glance. The team led by Rainer Blatt reversed a ...

Feb 15, 2013
3.9 / 5 (15) 141 | with audio podcast

Storing quantum information permanently

Quantum memory is one of the basic building blocks needed for realizing a quantum computer one day. Atac Imamoglu, a professor of quantum electronics, and Renato Renner, a professor of theoretical physics, ...

Jul 27, 2011
4.6 / 5 (12) 0 | with audio podcast

Quantum copies do new tricks

One of the strange features of quantum information is that, unlike almost every other type of information, it cannot be perfectly copied. For example, it is impossible to take a single photon and make a number of photons ...

Mar 22, 2012
4.2 / 5 (13) 22 | with audio podcast

Putting the squeeze on quantum information

Canadian Institute for Advanced Research researchers have shown that information stored in quantum bits can be exponentially compressed without losing information. The achievement is an important proof of principle, and could ...

Sep 25, 2014
5 / 5 (11) 0