Physics - Quantum Physics news

Quantum eavesdropper steals quantum keys

(PhysOrg.com) -- In quantum cryptography, scientists use quantum mechanical effects to encrypt and then communicate confidential information. Although quantum cryptography codes are unbreakable in principle, even the best ...

Jun 20, 2011 report
4.6 / 5 (11) 10 | with audio podcast

Better light measurement through quantum cloning

(PhysOrg.com) -- "One of the things we have been studying is how the world works on a really small scale," Bruno Sanguinetti, a scientist at the University of Geneva in Switzerland tells PhysOrg.com. "At the quantum level, ...

Aug 30, 2010 feature
4.3 / 5 (14) 0 | with audio podcast

Time travel theory avoids grandfather paradox

(PhysOrg.com) -- The possibility of going back in time only to kill your ancestors and prevent your own birth has posed a serious problem for potential time travelers, not even considering the technical details ...

Jul 21, 2010 report
4.2 / 5 (59) 96 | with audio podcast