Quantum origin of quantum jumps, perfect lens

In the paper “Quantum origin of quantum jumps: Breaking of unitary symmetry induced by information transfer and the transition from quantum to classical“, M. H. Zurek discussed origin of quantum jumps. He showed how to derive the collapse postulate when a transfer of information essential for both measurement and decoherence is modeled as unitary quantum porcess. The paper contains fruitful ideas and is very easy to read.

As PhysicsWeb reported, two groups in USA showed how to realize sub-wavelength lens through negative refraction materials. Their works reveal the possibility of optical imaging proteins, viruses and DNA, because in principle, the negative refraction lens can rsolve objects only a few nanometers across. I have no idea on negative refraction materials. But I think it is cool! So I download the papers and plan to read it thoroughly.



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