Simone Severini

Honorary Research Fellow
Department of Physics & Astronomy
University College London
WC1E 6BT London, United Kingdom
Email: simoseve@gmail.com
Skype: simoneseverini
Phone: +44 (0)777 8519716

I hold a Newton International Fellowship at University College London. I got my PhD. from Bristol University supervised by Richard Jozsa. Before coming here I was a post-doctoral research fellow in the Institute for Quantum Computing and the Department of Combinatorics & Optimization at the University of Waterloo. I am interested in Combinatorics and Quantum Theory. Groups: Quantum Information Group and UCL Institute of Origins.

Recent Papers

2009

C. Godsil, S. Severini, Control by quantum dynamics on graphs, October 2009. arXiv:0910.5397v1 [quant-ph]
A. Cosentino, S. Severini, Weight of quadratic forms and graph states, accepted for publication in Phys. Rev. A., 2009. arXiv:0906.2488v1 [quant-ph]
F. Markopoulou, S. Severini, A note on observables for counting trails and paths in graphs, JMMA, Vol. 8, No. 3, 2009. arXiv:0906.0043v1 [math.CO]
A. Casaccino, S. Lloyd, S. Mancini, S. Severini, Quantum state transfer through a qubit network with energy shifts and fluctuations, accepted for publication in Int. J. Quantum Info., 2009. arXiv:0904.4510v1 [quant-ph]
T.-C. Wei, S. Severini, Matrix permanent and entanglement of permutation symmetric states, May 2009. arXiv:0905.0012v1 [quant-ph]
S. Vazquez, S. Severini, Perturbation theory in a pure exchange non-equilibrium economy, April 2009. arXiv:0904.1402v1 [q-fin.TR]
A. Hamma, D. Lidar, S. Severini, Entanglement and area law with a fractal boundary, March 2009. arXiv:0903.4444v1 [quant-ph]
D. Djokovic, S. Severini, F. Szöllösi, Rational Orthogonal versus Real Orthogonal, accepted for publication in ELA, 2009. arXiv:0903.2853v1 [math.CO]
S. Bose, A. Casaccino, S. Mancini, S. Severini, Communication in XYZ All-to-All Quantum Networks with a Missing Link, Int. J. Quantum Info., 2009, v.7, no. 3. arXiv:0808.0748v2 [quant-ph]
A. Hamma, T. Mansour, S. Severini, Diffusion on an Ising Chain with Kinks, Phys. Lett. A., Volume 373, Issue 31 (2009), Pages 2622-2628. arXiv:0806.4812v1 [math.CO]
S. Flammia, S. Severini, Weighing matrices and optical quantum computing, Journal of Physics A: Math. Theor. 42 065302 (2009). arXiv:0808.2057v1 [quant-ph]
A. Hamma, F. Markopoulou, I. Premont-Schwarz, S. Severini, Lieb-Robinson bounds and the speed of light from topological order, Phys. Rev. Lett. 102, 017204 (2009). arxiv:0808.2495v1 [quant-ph]

2008

F. Passerini, S. Severini, The von Neumann entropy of networks, December 2008. arXiv:0812.2597v1 [cond-mat.dis-nn]. See also Quantifying complexity in networks: the von Neumann entropy, in John Symons and Jorge Louçã (Eds.): Social structures in communication networks, Int. J. of Agent Technologies and Systems, Vol. 1, Issue 4.
A. Bernasconi, C. Godsil, S. Severini, Quantum Networks on Cubelike Graphs, Phys. Rev. A 78,052320 (2008). arXiv:0808.0510v1 [quant-ph]
T. Mansour, S. Severini, Counting paths in Bratteli diagrams for SU(2)_k, EPL 86 33001. arXiv:0806.4809v1 [math.CO]
M. Arzano, A. Hamma, S. Severini, Hidden entanglement at the Planck scale: loss of unitarity and the information paradox, June 2008. arXiv:0806.2145v1 [hep-th]. See also "A black hole's secret files: hiding information at the Planck scale", Essay for The Gravity Research Foundation, 2008.
A. Casaccino, E. Galvao, S. Severini, Extrema of discrete Wigner functions and applications, Phys. Rev. A 78, 022310 (2008). arXiv:0805.3466v1 [quant-ph]
S. Severini, Nondiscriminatory Propagation on Trees, Journal of Physics A: Math. Theor. 41 482002 (2008), fast track communication. arXiv:0805.0181v1 [math.CO]
T. Konopka, F. Markopoulou, S. Severini, Quantum Graphity: a model of emergent locality, Phys. Rev. D. 77, 104029 (2008). arXiv:0801.0861v1 [hep-th]. See also the Cover Story of New Scientist magazine, 3 May, 2008.
M. Batty, A. Casaccino, A. Duncan, S. Rees, S. Severini, An application of the Deutsch-Jozsa algorithm to formal languages and the word problem for groups, LNCS 5106, Springer, 2008. arXiv:0801.2801v1 [quant-ph]
D. Emms, S. Severini, R. Wilson, E. Hancock, Overcoming cospectrality of graphs and trees via coined quantum walks, Pattern Recognition, Vol 42, Issue 9 (2008), 1988-2002.
R. Hildebrand, S. Mancini, S. Severini, Combinatorial laplacians and positivity under partial transpose, Math. Struct. in Comp. Science (2008), vol. 18, pp. 205–219. arXiv:cs.CC/0607036
M. Schork, T. Mansour, S. Severini, Noncrossing normal ordering for functions of boson operators, Internat. J. Theoret. Phys., Vol. 47, No 3 (2008), 832-849. arXiv:quant-ph/0607074
Q.-H. Hou, T. Mansour, S. Severini, Partial transpose of permutation matrices, Integers, The Electronic Journal of Combinatorial Number Theory, Vol. 8:1, (2008). arXiv:0709.3547v1 [math.CO]
S. Severini, F. Szöllösi, A further look into combinatorial orthogonality, ELA, Vol. 17 (2008) pp. 376-388. arXiv:0709.3651v1 [math.CO]

Meetings

Forthcoming

The 5^th Conference on Theory of Quantum Computation, Communication and Cryptography, (Temporary website) TQC2010, University of Leeds, 13-15 April, 2010. (Co-chair)
The 16^th International Linear Algebra Society Conference, ILAS 2010, Pisa, 21-25 June, 2010. Mini-symposium: Linear Algebra and Quantum Information Processing. (Organizer)