Beneath many cities are complex networks of optical fibres that carry data, encoded in pulses of light, to offices and homes. Researchers from the National University of Singapore (NUS) and Singtel, Asia's leading communications ...
Optics & Photonics
Apr 5, 2019
0
298
For the first time, researchers have sent a quantum-secured message containing more than one bit of information per photon through the air above a city. The demonstration showed that it could one day be practical to use high-capacity, ...
Optics & Photonics
Aug 24, 2017
0
2510
(Phys.org)—Two teams of researchers in China have advanced the distance that entangled particles can be used to send information, including encryption keys. In their papers, both uploaded to the arXiv preprint sever, the ...
Anonymity networks protect people living under repressive regimes from surveillance of their Internet use. But the recent discovery of vulnerabilities in the most popular of these networks—Tor—has prompted computer scientists ...
Security
Jul 11, 2016
0
22
Quantum cryptography is considered a fully secure encryption method, but researchers from Linköping University and Stockholm University have discovered that this is not always the case. They found that energy-time entanglement ...
Quantum Physics
Dec 18, 2015
0
162
When checking your email over a secure connection, or making a purchase from an online retailer, have you ever wondered how your private information or credit card data is kept secure?
Security
Mar 23, 2015
1
61
It would be another powerful tool in the arsenal of US and British spy services: encryption keys for a large share of the SIM cards used for mobile phones.
Security
Feb 20, 2015
1
419
(Phys.org) —Anyone able to crack the encryption code of Telegram's message text wins a handsome award, but it needs to be by Telegram's rules. To win the money, you need to decipher the message, find the secret email address, ...
(Phys.org) —A team of researchers at Toshiba Corporation has developed technology that allows up to 64 users to participate in a quantum key distribution (QKD) network with another single user. In their paper published ...
In this month's special edition of Physics World, focusing on quantum physics, Thomas Jennewein and Brendon Higgins from the Institute for Quantum Computing at the University of Waterloo, Canada, describe how a quantum space ...
Quantum Physics
Feb 28, 2013
8
0
