Quantum process nonclassicality

Rahimi-Keshari, Saleh, Kiesel, Thomas, Vogel, Werner, Grandi, Samuele, Zavatta, Alessandro and Bellini, Marco (2013) Quantum process nonclassicality. Physical Review Letters, 110 16: 160401.1-160401.5. doi:10.1103/PhysRevLett.110.160401

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Author Rahimi-Keshari, Saleh
Kiesel, Thomas
Vogel, Werner
Grandi, Samuele
Zavatta, Alessandro
Bellini, Marco
Title Quantum process nonclassicality
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2013-04-19
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.110.160401
Open Access Status File (Publisher version)
Volume 110
Issue 16
Start page 160401.1
End page 160401.5
Total pages 5
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2014
Language eng
Formatted abstract
We propose a definition of nonclassicality for a single-mode quantum-optical process based on its action on coherent states. If a quantum process transforms a coherent state to a nonclassical state, it is verified to be nonclassical. To identify nonclassical processes, we introduce a representation for quantum processes, called the process-nonclassicality quasiprobability distribution, whose negativities indicate nonclassicality of the process. Using this distribution, we derive a relation for predicting nonclassicality of the output states for a given input state. We experimentally demonstrate our method by considering the single-photon addition as a nonclassical process and predicting nonclassicality of the output state for an input thermal state.
Keyword States
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Centre for Quantum Computer Technology Publications
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 5 times in Scopus Article | Citations
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Created: Sun, 26 May 2013, 01:46:45 EST by System User on behalf of Quantum Computation and Communication Technology