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Theoretical framework for quantum networks

Open access
Chiribella, Giulio, D’Ariano, Giacomo Mauro, Perinotti, Paolo·2009·Physical Review A

Abstract

We present a framework to treat quantum networks and all possible transformations thereof, including as special cases all possible manipulations of quantum states, measurements, and channels, such as, e.g., cloning, discrimination, estimation, and tomography. Our framework is based on the concepts of quantum comb---which describes all transformations achievable by a given quantum network---and link product---the operation of connecting two quantum networks. Quantum networks are treated both from a constructive point of view---based on connections of elementary circuits---and from an axiomatic one---based on a hierarchy of admissible quantum maps. In the axiomatic context a fundamental property is shown, which we call universality of quantum memory channels: any admissible transformation of quantum networks can be realized by a suitable sequence of memory channels. The open problem whether this property fails for some nonquantum theory, e.g., for no-signaling boxes, is posed.

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Metadata

Authors
Chiribella, G., D’Ariano, G. M., & Perinotti, P.
Venue
Physical Review A
Published
2009-08-31
Volume
80
Issue
2
ISSN
  • 0556-2791 (ISSN-L)
  • 1050-2947
  • 1094-1622
OpenAlex
W2041922678
Cited by
517
References
26
FWCI
10.48
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Theoretical framework for quantum networks. https://app.cochat.ai/papers/10.1103/physreva.80.022339
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Chiribella, G., D’Ariano, G. M., & Perinotti, P. (2009). Theoretical framework for quantum networks. Physical Review A. https://doi.org/10.1103/physreva.80.022339

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