Efficient Accessible Bounds to the Classical Capacity of Quantum Channels
| Autor: | Massimiliano F. Sacchi, Chiara Macchiavello |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Quantum Physics
Process tomography Computer science channel capacity FOS: Physical sciences General Physics and Astronomy Conditional probability Topology 01 natural sciences Classical capacity quantum information 0103 physical sciences A priori and a posteriori quantum communication Quantum Physics (quant-ph) 010306 general physics Quantum information science Quantum Communication channel Computer Science::Information Theory |
| Zdroj: | Physical review letters 123 (2019). doi:10.1103/PhysRevLett.123.090503 info:cnr-pdr/source/autori:Macchiavello, Chiara; Sacchi, Massimiliano F./titolo:Efficient Accessible Bounds to the Classical Capacity of Quantum Channels/doi:10.1103%2FPhysRevLett.123.090503/rivista:Physical review letters (Print)/anno:2019/pagina_da:/pagina_a:/intervallo_pagine:/volume:123 |
| DOI: | 10.1103/PhysRevLett.123.090503 |
| Popis: | We present a method to detect lower bounds to the classical capacity of quantum communication channels by means of few local measurements (i.e. without complete process tomography), reconstruction of sets of conditional probabilities, and classical optimisation. The method does not require any a priori information about the channel. We illustrate its performance for significant forms of noisy channels. Comment: 10 pages; minor corrections |
| Databáze: | OpenAIRE |
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