March 23, 2011
Researchers have developed a new switching device that can route quantum bits at very high speeds along a shared network of fiber-optic cable without losing the embedded entanglement information, says Prem Kumar, AT&T Professor of Information Technology at Northwestern University.
The researchers used pairs of polarization-entangled photons emitted into standard telecom-grade fiber. One photon of the pair was transmitted through the all-optical switch. Using single-photon detectors,… read more