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Hlér Kristjánsson
Hlér joined the QICI group in September 2018 as a PhD student in the Oxford Computer Science Department.
Hlér did his undergraduate and master's MSci studies in physics at Imperial College London (2014-18), with one year on ERASMUS at the University of Freiburg (2016-17). His specialisation was in theoretical physics and the master's thesis was completed in the Quantum Optics and Statistics Group, University of Freiburg, under Prof Dr Andreas Buchleitner, titled 'Efficient quantum transport in disordered networks with vibrations'. In 2016, Hlér completed a summer research internship at the London Institute for Mathematical Sciences and Imperial College London under Dr Oscar Dahlsten and Prof Myungshik Kim on a quantum generalisation of feedforward neural networks. Oxford home page link here. |
Research Interests |
My main research interests are quantum information theory and foundations. In particular, I am interested in how quantum phenomena which have a bearing on our fundamental understanding of nature, such as quantum superpositions of processes and indefinite causal structures, may be harnessed in quantum information processing and quantum communication. My current research topics include quantum communication through a superposition of alternative trajectories and at a superposition of alternative times, which enables noise reduction in quantum communication channels, resource theories of communication, including with indefinite causal order, and constructing an extended framework for describing quantum processes: routed quantum circuits. Previously during my undergraduate and master's studies, I have worked on design principles for quantum coherent transport in photosynthetic systems, as well as quantum neural networks.
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Publications |
K. H. Wan, O. Dahlsten, H. Kristjánsson, R. Gardner, and M.S. Kim
Quantum generalisation of feedforward neural networks NPJ Quantum Information, vol. 3, no. 1, p. 36 (2017) G. Chiribella and H. Kristjánsson Quantum Shannon theory with superpositions of trajectories Proceedings of the Royal Society A, vol. 475, no. 2225, p. 20180903, (2019) H. Kristjánsson, G. Chiribella, S. Salek, D. Ebler, and M. Wilson Resource theories of communication New Journal of Physics 22 (7) 073014 (2020) G. Rubino, L.A. Rozema, D. Ebler, H. Kristjánsson, S. Salek, P. Allarde Guerin, A.A. Abbott, C. Branciard, Č. Brukner, G. Chiribella, and P. Walther Experimental quantum communication enhancement by superposing trajectories Physical Review Research 3 (1) 013093 (2021) H. Kristjánsson, W. Mao, and G. Chiribella Witnessing latent time correlations with a single quantum particle arXiv preprint arXiv:2004.06090 (2020) A. Vanrietvelde, H. Kristjánsson, and J. Barrett Routed quantum circuits arXiv preprint arXiv:2011.08120 (2020). H. Kristjánsson Efficient Quantum Transport in Disordered Networks with Vibrations MSci Thesis (2017) |
CV |
My CV can be found here.
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