martedì 12 luglio 2016

# s-phys: "entanglement entropy of a qubit", the begin ...

<< All systems are fundamentally quantum systems (..) but the means of describing in a quantum sense the chaotic behavior of, say, air molecules in an evacuated room, remains limited >>

<< To investigate, [AA] devised an experiment using three quantum bits, the basic computational units of the quantum computer >>

<< By manipulating these qubits with electronic pulses, [AA] caused them to interact, rotate and evolve in the quantum analog of a highly sensitive classical [chaotic] system >>

<< The result is a map of entanglement entropy of a qubit that, over time, comes to strongly resemble that of classical dynamics — the regions of entanglement in the quantum map resemble the regions of chaos on the classical map >>

Sonia Fernandez. Researchers at UCSB blur the line between classical and quantum physics by connecting chaos and entanglement.  Monday, July 11, 2016

C. Neill, P. Roushan, et al.  Ergodic dynamics and thermalization in an isolated quantum system. Nature Physics (2016) DOI: doi:10.1038/nphys3830. Published online 11 July 2016

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