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9 papers · 1 filter
Sampling and Squeezing Electromagnetic Waves through Subwavelength Ultranarrow Regions or Openings
Mario G. Silveirinha, Nader Engheta
Here, we investigate the physical mechanisms that may enable squeezing a complex electromagnetic field distribution through a narrow and/or partially obstructed region with little…
An additivity theorem for plain Kolmogorov complexity
Bruno Bauwens, Alexander Shen
We prove the formula C(a,b) = K(a|C(a,b)) + C(b|a,C(a,b)) + O(1) that expresses the plain complexity of a pair in terms of prefix and plain conditional complexities of its componen…
Fidelity spectrum and phase transitions of quantum systems
P. D. Sacramento, N. Paunkovic, V. R. Vieira
Quantum fidelity between two density matrices, is usually defined as the trace of the operator . We study the logarithmic sp…
Source Separation and Clustering of Phase-Locked Subspaces: Derivations and Proofs
Miguel Almeida, Jan-Hendrik Schleimer, José Bioucas-Dias +1
Due to space limitations, our submission "Source Separation and Clustering of Phase-Locked Subspaces", accepted for publication on the IEEE Transactions on Neural Networks in 2011,…
Secure -dimensional Simultaneous Dense Coding and Applications
Haozhen Situ, Daowen Qiu, Paulo Mateus +1
Simultaneous dense coding guarantees that Bob and Charlie simultaneously receive their respective information from Alice in their respective processes of dense coding. The idea is…
Fair and optimistic quantum contract signing
N. Paunkovic, J. Bouda, P. Mateus
We present a fair and optimistic quantum contract signing protocol between two clients that requires no communication with the third trusted party during the exchange phase. We dis…