We have proposed a protocol for conditional suppression of losses in direct quantum state transmission over a lossy quantum channel. The method works by noiselessly attenuating the input state prior to transmission through a lossy channel followed by noiseless amplification
YouTube channel of Institute for Quantum Computing
Very nice youtube channel with many interesting lectures: http://www.youtube.com/user/QuantumIQC
How many photons does it take to measure a transmittance? Sometimes less than one.
In collaboration with theoretical quantum physicists from Pavia, Italy, we have studied minimum-energy quantum reading. Here in Quantum Optics Lab Olomouc we have demonstrated some efficient reading protocols using fiber-optics interferometric setup which encodes two quantum bits in which-way degree