Chandan Datta from the Institute of Physics of Bhubaneswar will be visiting us in the second half of September.
On Wed, Sep 20th, at 14.30 in Aula Ottica Quantistica (5th floor LITA building) he will deliver a seminar entitled
Measuring higher-dimensional entanglement
We study local-realistic inequalities, Bell-type inequalities, for bipartite pure states of finite dimensional quantum systems – qudits. There are a number of proposed Bell-type inequalities for such systems. Our interest is in relating the value of Bell-type inequality function with a measure of entanglement. Interestingly, we find that one of these inequalities, the Son-Lee-Kim inequality, can be used to measure entanglement of a pure bipartite qudit state and a class of mixed two-qudit states. Unlike the majority of earlier schemes in this direction, where number of observables needed to characterize the entanglement increases with the dimension of the subsystems, this method needs only four observables. We also discuss the experimental feasibility of this scheme. It turns out that current experimental set ups can be used to measure the entanglement using our scheme.
Ref: Chandan Datta, Pankaj Agrawal, and Sujit K Choudhary, Phys. Rev. A 95, 042323 (2017)