Telecloning of qudits via partially entangled states

Open Access
Authors
Publication date 08-2016
Journal Quantum Information Processing
Volume | Issue number 15 | 8
Pages (from-to) 3443-3458
Number of pages 16
Organisations
  • Faculty of Science (FNWI) - Institute of Physics (IoP)
  • Faculty of Science (FNWI) - Institute of Physics (IoP) - Van der Waals-Zeeman Institute (WZI)
Abstract
We study the process of quantum telecloning of d-dimensional pure quantum states using partially entangled pure states as quantum channel. This process efficiently mixes optimal universal symmetric cloning with quantum teleportation. It is shown that it is possible to implement universal symmetric telecloning in a probabilistic way using unambiguous state discrimination and quantum state separation schemes. It is also shown that other strategies, such as minimum error discrimination, lead to a decrease in the fidelity of the copies and that certain partially entangled pure states with maximal Schmidt rank lead to an average telecloning fidelity which is always above the optimal fidelity of measuring and preparation of quantum states. We also discuss the case of partially entangled pure states with non-maximal Schmidt rank. The results presented here are valid for arbitrary numbers of copies of a single-input qudit state of any dimension.
Document type Article
Language English
Published at https://doi.org/10.1007/s11128-016-1348-2
Published at https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969902478&doi=10.1007%2fs11128-016-1348-2&partnerID=40&md5=43424bdbc8c24a2644ffcecbb58a5644
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10.1007_s11128-016-1348-2 (Final published version)
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