An Amplifier That’s Quantum Quiet.
Posted: Fri Dec 16, 2011 8:21 am
Specifically aimed at quantum computing, but looks interesting generally:
http://spectrum.ieee.org/semiconductors ... ign=121511
"today’s amplifiers boost ...signals at a cost, sometimes drowning them out with noise from the amplifiers themselves. “Our device adds, at least in principle, the minimum possible amount of noise dictated by the laws of quantum mechanics,” says Massel."
http://spectrum.ieee.org/semiconductors ... ign=121511