Hi all,
next Monday, we have a seminar talk by Filippo Miatto at 4 pm in
Alice room (301). See title and abstract below.
Best wishes,
Markus
Title: Hidden structures in high dimensional entanglement
Speaker: Filippo Miatto (
University of Strathclyde)
Abstract:
The minimal dimension of the Hilbert space that hosts states of an
entangled pair of photons can be extremely high. The process of
spontaneous parametric down-conversion (SPDC) is a possible way of
producing highly entangled photon pairs, in both the spatial and
temporal parts of the wave function. However, the most common
approximations that are used in the analytical treatment of SPDC
hinder the possibility of noticing further structures of the single
joint modes. We used a more general formalism, showing that the
entangled modes are still eigenfunctions of the orbital angular
momentum, but the radial modes are far from the usual ones and they
show novel interesting features that might be explained by
introducing an additional quantum number. The problem of dealing
with SPDC states has two faces: we need to know with enough
confidence what state are created, and we need to know with enough
confidence what states we are projecting on, upon measurement. We
tried to approach both these problems together, and we showed that
high dimensional entanglement shields the
amount of information that can be stored in a photon from imperfect
measurements. In my talk I will present both these aspects of
high-dimensionally entangled states of photon pairs.
Date: Monday, May 14, 2012 - 4:00 pm
Series: Quantum Information Seminar
Location: Alice Room (301)