4 citations · 16 across the 21 of their papers we have counts for
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quant-ph2015
Bose Operators, Coherent States, Truncation, Spin Coherent States, Lie Algebras and Spectrum
Willi-Hans Steeb, Garreth Kemp, Yorick Hardy +1
We study truncated Bose operators in finite dimensional Hilbert spaces. Spin coherent states for the truncated Bose operators and canonical coherent states for Bose operators are c…
quant-ph2015
Hierarchy of Spin Operators, Quantum Gates, Entanglement, Tensor Product and Eigenvalues
Willi-Hans Steeb, Yorick Hardy
{\bf Abstract.} We show that two hierarchies of spin Hamilton operators admit the same spectrum. Both Hamilton operators play a central role for quantum gates in particular for the…
math.RA2015
A Short Note on Kronecker Square Roots
Yorick Hardy
The results of [I. Ojeda, Amer. Math. Monthly, 122, pp 60--64] provides a characterization of Kronecker square roots of matrices in terms of the symmetry and rank of the block vec…