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Showing 2012 · quant-phShow all
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quant-ph2012★ 1 cited
Direct estimation of decoherence rates
Vladimír Bužek, Peter Rapcan, Jochen Rau +1
The decoherence rate is a nonlinear channel parameter that describes quantitatively the decay of the off-diagonal elements of a density operator in the decoherence basis. We addres…
quant-ph2012★ 30 cited
Symmetries and security of a quantum-public-key encryption based on single-qubit rotations
U. Seyfarth, G. M. Nikolopoulos, G. Alber
Exploring the symmetries underlying a previously proposed encryption scheme which relies on single-qubit rotations, we derive an improved upper bound on the maximum information tha…