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Minimum output entropy of a non-gaussian quantum channel
Memarzadeh, L ; Sharif University of Technology | 2016
307
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- Type of Document: Article
- DOI: 10.1103/PhysRevA.94.022341
- Publisher: American Physical Society , 2016
- Abstract:
- We introduce a model of a non-Gaussian quantum channel that stems from the composition of two physically relevant processes occurring in open quantum systems, namely, amplitude damping and dephasing. For it we find input states approaching zero output entropy while respecting the input energy constraint. These states fully exploit the infinite dimensionality of the Hilbert space. Upon truncation of the latter, the minimum output entropy remains finite, and optimal input states for such a case are conjectured thanks to numerical evidence
- Keywords:
- Entropy ; Gaussian noise (electronic) ; Quantum communication ; Quantum entanglement ; Quantum optics ; Amplitude damping ; Input energy constraint ; Input state ; Minimum output entropy ; Non-gaussian ; Numerical evidence ; Open quantum systems ; Zero-output ; Communication channels (information theory)
- Source: Physical Review A - Atomic, Molecular, and Optical Physics ; Volume 94, Issue 2 , 2016 ; 10502947 (ISSN)
- URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.94.022341