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Autor:
Morgan, G. L.
This thesis is an investigation into symmetric and semisymmetric graphs of prime valency. Our approach is via amalgams of groups and coverings of such graphs by trees. We develop theoretical and computational methods to inform this problem. In the ca
Externí odkaz:
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.583160
Autor:
Morgan, G. L.
Diffusion-weighted MRI (DW-MRI) is a powerful in vivo imaging technique that is particularly sensitive to the underlying microstructure of white matter tissue in the brain. Many models of the DW-MRI signal exist that allow us to relate the signals we
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.587637
Publikováno v:
Nuclear Science and Engineering; October 2024, Vol. 198 Issue: 10 p1901-1910, 10p
Autor:
Morgan, G. L., Parker, C. W.
The commuting graph of a finite group with trivial centre is examined. It is shown that the connected components of the commuting graph have diameter at most 10.
Externí odkaz:
http://arxiv.org/abs/1301.2341
Autor:
Morgan, G. L.
In this paper we determine all locally finite and symmetric actions of a group on the tree of valency five. As a corollary we complete the classification of the isomorphism types of vertex and edge stabilisers in a group acting symmetrically on a gra
Externí odkaz:
http://arxiv.org/abs/1209.5248
Autor:
Buttler, W. T., Hughes, R. J., Lamoreaux, S. K., Morgan, G. L., Nordholt, J. E., Peterson, C. G.
Quantum key distribution (QKD) has been demonstrated over a point-to-point $\sim1.6$-km atmospheric optical path in full daylight. This record transmission distance brings QKD a step closer to surface-to-satellite and other long-distance applications
Externí odkaz:
http://arxiv.org/abs/quant-ph/0001088
Autor:
Buttler, W. T., Hughes, R. J., Kwiat, P. G., Lamoreaux, S. K., Luther, G. G., Morgan, G. L., Nordholt, J. E., Peterson, C. G., Simmons, C. M.
Publikováno v:
Phys.Rev.Lett.81:3283-3286,1998
A working free-space quantum key distribution (QKD) system has been developed and tested over an outdoor optical path of ~1 km at Los Alamos National Laboratory under nighttime conditions. Results show that QKD can provide secure real-time key distri
Externí odkaz:
http://arxiv.org/abs/quant-ph/9805071
Autor:
Buttler, W. T., Hughes, R. J., Kwiat, P. G., Luther, G. G., Morgan, G. L., Nordholt, J. E., Peterson, C. G., Simmons, C. M.
A working free-space quantum key distribution (QKD) system has been developed and tested over a 205-m indoor optical path at Los Alamos National Laboratory under fluorescent lighting conditions. Results show that free-space QKD can provide secure rea
Externí odkaz:
http://arxiv.org/abs/quant-ph/9801006
Quantum cryptography is a new method for secret communications offering the ultimate security assurance of the inviolability of a Law of Nature. In this paper we shall describe the theory of quantum cryptography, its potential relevance and the devel
Externí odkaz:
http://arxiv.org/abs/quant-ph/9504002