Anomalous resilient to decoherence macroscopic quantum superpositions generated by universally covariant optimal quantum cloning
Quantum Physics
2015-05-18 v1
Abstract
We show that the quantum states generated by universal optimal quantum cloning of a single photon represent an universal set of quantum superpositions resilient to decoherence. We adopt Bures distance as a tool to investigate the persistence ofquantum coherence of these quantum states. According to this analysis, the process of universal cloning realizes a class of quantum superpositions that exhibits a covariance property in lossy configuration over the complete set of polarization states in the Bloch sphere.
Keywords
Cite
@article{arxiv.1003.0831,
title = {Anomalous resilient to decoherence macroscopic quantum superpositions generated by universally covariant optimal quantum cloning},
author = {N. Spagnolo and F. Sciarrino and F. De Martini},
journal= {arXiv preprint arXiv:1003.0831},
year = {2015}
}
Comments
8 pages, 6 figures