[Todos] Seminario en el DF - Philipp Höhn (IQOQI Vienna): Jueves 22/2, 14hs, Aula Seminario, 2do piso, Pab. I

[Augusto Roncaglia]

SEMINARIO EN EL DEPARTAMENTO DE FÍSICA EXACTAS - UBA


                        En el Aula Seminario, 2do piso, Pab. I,

                        Jueves 22/2, 14hs:

                        PHILIPP HOHN

                        Institute for Quantum Optics and Quantum
Information, Vienna


*Quantum theory from rules on information acquisition*

In contrast to relativity, quantum theory has evaded a commonly accepted
apprehension, in part because of a long-lasting lack of physical statements
that fully characterise it. However, the past decade has seen considerable
progress in remedying this situation thanks to a wave of derivations of
quantum theory from operational postulates, aiming at answering Wheeler's
question "why the quantum?''.  In this talk, I will review how the
formalism of quantum theory (for arbitrarily many qubits) can be
reconstructed from operational rules restricting an observer’s acquisition
of information. This reconstruction offers an informational explanation for
the architecture of the theory and specifically for its correlation
structure. In particular, it explains entanglement, monogamy and
non-locality compellingly from limited accessible information and
complementarity. Time permitting, I may also discuss how, as a byproduct,
it unravels new `conserved informational charges' from complementarity
relations that characterise the unitary group and the set of pure states.
(Based on arXiv:1612.06849, arXiv:1412.8323, arXiv:1511.01130.)
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