On February 17th, Wednesday, 12:00 AM in AQM room, (Department of Physics, LITA 5th floor).
Giacomo Tanzi Marlotti (Unimi PhD student) will deliver a seminar on a recent published research about quantum theoretical modeling of the properties of positronium atoms in small cavities. The title of the seminar is “A new insight on positronium confinement in nanoporous materials”.
On Wednesday 21 October, 2PM AQM Room, Paolo Giorda (INRIM Torino) will be with us and deliver a talk entitled
Quantum effects in open systems dynamics and their roots in the Decoherent Histories Approach. An application to energy transfer processes in simple photosynthetic systems: the Quantum Recoil Avoiding effect and energy transfer efficiency.
On Wednesday 7 October, 2PM AQM room @ LITA 5th floor (together with a coffee), Jacopo Trapani and Giacomo Guarnieri (PhD student @ UNIMI) will deliver their 2-nd year seminars
Matteo Rossi will deliver his summer-school seminar on Wednesday 30 September, at 2 PM at Auletta di Ottica Quantistica (5th floor LITA building), entitled “Quantum estimation from incomplete information”.
Antonio Mandarino, will deliver a talk on Wednesday, September 23th 2015, 2 PM at the Auletta di Ottica Quantistica (LITA 5th floor).
Fidelity in tomographic reconstruction of continuous variable systems
Abstract: Fidelity is a widely adopted measure of closeness between quantum states either pure or mixed. Although it is not a proper distance in the Hilbert space, fidelity can be linked to distances inducing a metric over the manifold of density matrix. This relation is commonly adopted to justify the assumption that states with a high value of fidelity, viz. 0.9 or 0.99 is enough to certify that two states shares identical physical properties. We analyze a set of experimentally generated quantum states by means of tomographic analysis. Hence we will show that benchmarking with the usual fidelity thresholds does not accomplish that task, in addition we emphasise how only full quantum tomography does.
We warmly welcome Hossein Rangani Jahromi, PhD student at the University of Urmia (Iran), who recently joined us as a visiting student. Hossein will stay in our group until February 2016.
Here is a picture of the AQM group (plus collaborators and a bronze pig) at Castelnuovo Rangone, during the AQM 2015 meeting held on 23-25 June 2015 at Modena.
We are glad to announce that Stefano Pirandola (University of York) will deliver a talk on Tuesday 14 July at the Aula di Ottica Quantistica (5th floor LITA building). An abstract of the talk follows.
Stefano Pirandola (University of York)
Relay-based protocols in correlated-noise Gaussian environments
We consider continuous-variable protocols exploiting a quantum relay, such as entanglement swapping, quantum teleportation, and QKD. Their theory is extended to a non-Markovian spatial model of decoherence characterized by correlated Gaussian noise. Even if bipartite entanglement is completely lost at the relay, we show that the various protocols can progressively be reactivated by the separable noise-correlations of the environment.
Quantum Technology Lab – Dipartimento di Fisica – Università degli Studi di Milano