[quantum-info] informal talks today

[Marco Piani]

IQC lunch seminar, RAC 2009, December 2 (today), noon

We have two guests speaking:

- Jacob Biamonte, Oxford University

"Categorical Tensor Network States"

I plan to present results from a study in the use of the mathematics  
of category theory in the description of quantum states by tensor  
networks. This approach enables the development of a categorical  
framework allowing a solution to the quantum decomposition problem.  
Specifically, given an n-body quantum state S, we found a general  
method to factor S into a tensor network. Moreover, this decomposition  
of S uses building blocks defined mathematically in terms of purely  
diagrammatic laws. We used the solution to expose a previously unknown  
and large class of quantum states which we prove to be sampled  
efficiently and exactly. This general framework of categorical tensor  
network states, where a combination of generic and algebraically  
defined tensors appear, enhances the theory of tensor network states.  
Part's of my talk will represent joint work with Stephen R. Clark  
(CQT, Kebble College, Oxford) and Dieter Jaksch (Oxford, Kebble  
College, CQT).

- Xie Chen, MIT

TBA