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- Ames National LaboratoryUS14 papers
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4 papers · 1 filter
Further results on the observability of quantum systems under general measurement
D. D'Alessandro, R. Romano
In this paper, we present a collection of results on the observability of quantum mechanical systems, in the case the output is the result of a discrete nonselective measurement. B…
Quantum Symmetries and Cartan Decompositions in Arbitrary Dimensions
Domenico D'Alessandro, Francesca Albertini
We investigate the relation between Cartan decompositions of the unitary group and discrete quantum symmetries. To every Cartan decomposition there corresponds a quantum symmetry w…
An Exact Solution to the Time-dependent Schrodinger Equation for a Model One-dimensional Potential
Athanasios N. Petridis, Lawrence P. Staunton, Jon Vermedahl +1
Analytical solutions to the time-dependent Shrödinger equation in one dimension are developed for time-independent potentials, one consisting of an infinite wall and a repulsive de…
The simplified Toffoli gate implementation by Margolus is optimal
Guang Song, Andreas Klappenecker
Unitary operations are expressed in the quantum circuit model as a finite sequence of elementary gates, such as controlled-not gates and single qubit gates. We prove that the simpl…