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Quantum Algorithms
Estimating the output entropy of a tensor product of two quantum channels
arXiv
Authors: Grigori G. Amosov
Year
2014
Paper ID
47401
Status
Preprint
Abstract Read
~2 min
Abstract Words
74
Citations
N/A
Abstract
In this paper we find, for a class of bipartite quantum states, a nontrivial lower bound on the entropy gain resulting from the action of a tensor product of identity channel with an arbitrary channel. By means of that we then estimate (from below) the output entropy of the tensor product of dephasing channel with an arbitrary channel. Finally, we provide a characterization of all phase-damping channels resulting as particular cases of dephasing channels.
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- It adds a 2014 reference point for readers tracking recent quantum research.
- In this paper we find, for a class of bipartite quantum states, a nontrivial lower bound on the entropy gain resulting from the action of a tensor product of identity channel...
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