Narrow bounds for the quantum capacity of thermal attenuators
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-06848-0
Abstract: Thermal attenuator channels model the decoherence of quantum systems interacting with a thermal bath, e.g., a two-level system subject to thermal noise and an electromagnetic signal traveling through a fiber or in free-space. Hence determining… read more here.
Keywords: bounds quantum; capacity; capacity thermal; quantum capacity ... See more keywords
Quantum Flags and New Bounds on the Quantum Capacity of the Depolarizing Channel.
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DOI: 10.1103/physrevlett.125.020503
Abstract: A new upper bound for the quantum capacity of the d-dimensional depolarizing channels is presented. Our derivation makes use of a flagged extension of the map where the receiver obtains a copy of a state… read more here.
Keywords: flags new; depolarizing channel; new bounds; capacity ... See more keywords
Bosonic Quantum Communication across Arbitrarily High Loss Channels.
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DOI: 10.1103/physrevlett.125.110504
Abstract: A general attenuator Φ_{λ,σ} is a bosonic quantum channel that acts by combining the input with a fixed environment state σ in a beam splitter of transmissivity λ. If σ is a thermal state, the… read more here.
Keywords: bosonic quantum; quantum communication; communication; state ... See more keywords