Graphene: light polarizing filterNature Photonics 5, 411–415 (2011) (abril 2011)we demonstrate the operation of a broadband fibre polarizer based on graphene, an ultrathin two-dimensional carbon material. The out- coupled light in the telecommunication band shows a strong s- polarization effect with an extinction ratio of 27 dB. Unlikecan support transverse-electric-mode surface wave propagation due to its linear dispersion of Dirac electrons. polarizers made from thin metal film, a graphene polarizer
Not long ago (AJP 5-Abr): fromSchrödinger’s Cat to Schrödinger’s OctopusQuantum interference of large molecules: wave-particle duality
Schrödinger’s Cat experimentDead or alive?Is card red or black?
Quantum key distribution: most important!One-time keypad, length of key=length ofmessageGenerated through EPR pairs Bob Alice Diagonal detector basis Diagonal polarization filters Horizontal- vertical Horizontal-vertical detector basis polarization filters Light source Alice’s bit sequence 1 0 1 1 0 0 1 1 0 0 1 1 1 0 Bob’s detection basis Bob’s measurement 1 0 0 1 0 0 1 1 0 0 0 1 0 0 Retained bit sequence 1 – – 1 0 0 – 1 0 0 – 1 – 0 Curs d’estiu de Criptografia, 2007
Relation to the Gilbreathprinciple and Martin Gardner
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