Efficient Accessible Bounds to the Classical Capacity of Quantum Channels

Autor: Massimiliano F. Sacchi, Chiara Macchiavello
Jazyk: angličtina
Rok vydání: 2019
Předmět:
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