888-384-7144 info@insidequantumtechnology.com

Laser-Based Quantum Internet Breakthrough from Osaka University

By IQT News posted 31 Jul 2019

(Computing.co.uk) Scientists at Osaka University claim to have made a breakthrough in the development of quantum internet communications using lasers. The researchers said that their experiments demonstrate that it is possible to translate “the information encoded in the circular polarisation of a laser beam” into the spin state of an electron caught in a quantum dot.
Applying laser light allowed scientists to read the state of the electron, which enabled them to confirm that the electron state was in the correct spin state. The readout method used by the team was based on Pauli exclusion principle, in which two electrons are not allowed to occupy the same state. According to senior author Akira Oiwa, the transfer of superposition (entangled) states allows for completely secure quantum key distribution. “This is because any attempt to intercept the signal automatically destroys the ‘superposition’, making it impossible to listen in without being detected,” Oiwa added.

Subscribe to Our Email Newsletter

Stay up-to-date on all the latest news from the Quantum Technology industry and receive information and offers from third party vendors.