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Information capacity of a quantum observable [PDF]
Problems of Information Transmission, 2012 13 pages.
A. Barchielli +18 more
openaire +5 more sources
The Quantum Capacity of Channels With Arbitrarily Correlated Noise [PDF]
IEEE Transactions on Information Theory, 2009 We study optimal rates for quantum communication over a single use of a channel, which itself can correspond to a finite number of uses of a channel with arbitrarily correlated noise.
F. Buscemi, N. Datta
semanticscholar +3 more sources
On the classical capacity of quantum Gaussian channels [PDF]
Physica Scripta, 2011 The set of quantum Gaussian channels acting on one bosonic mode can be classified according to the action of the group of Gaussian unitaries. We look for bounds on the classical capacity for channels belonging to such a classification. Lower bounds can be efficiently calculated by restricting to Gaussian encodings, for which we provide analytical ...
Cosmo Lupo +3 more
openalex +7 more sources
Direct Generation and Non-Hermitian Regulation of Energy-Time-Polarization-Hyper-Entangled Quadphotons [PDF]
SensorsEntangled multiphoton is an ideal resource for quantum information technology. Here, narrow-bandwidth hyper-entangled quadphoton is theoretically demonstrated by quantizing degenerate Zeeman sub states through spontaneous eight-wave mixing (EWM) in a hot
Rui Zhuang +6 more
doaj +2 more sources
Estimate Distillable Entanglement and Quantum Capacity by Squeezing Useless Entanglement [PDF]
IEEE Journal on Selected Areas in Communications, 2023 Quantum Internet relies on quantum entanglement as a fundamental resource for secure and efficient quantum communication, reshaping data transmission. In this context, entanglement distillation emerges as a crucial process that plays a pivotal role in ...
Chengkai Zhu, Chenghong Zhu, Xin Wang
semanticscholar +1 more source
Quantum capacity and codes for the bosonic loss-dephasing channel [PDF]
Quantum, 2022 Bosonic qubits encoded in continuous-variable systems provide a promising alternative to two-level qubits for quantum computation and communication.
P. Leviant +3 more
semanticscholar +1 more source
Generic nonadditivity of quantum capacity in simple channels [PDF]
Physical Review Letters, 2022 Determining capacities of quantum channels is a fundamental question in quantum information theory. Despite having rigorous coding theorems quantifying the flow of information across quantum channels, their capacities are poorly understood due to ...
Felix Leditzky +4 more
semanticscholar +1 more source
Information transmission with continuous variable quantum erasure channels [PDF]
Quantum, 2023 Quantum capacity, as the key figure of merit for a given quantum channel, upper bounds the channel's ability in transmitting quantum information. Identifying different types of channels, evaluating the corresponding quantum capacity, and finding the ...
Changchun Zhong +2 more
doaj +1 more source
Computing Quantum Channel Capacities [PDF]
IEEE Transactions on Information Theory, 2021 v4: 22 pages, 4 figures, new ...
Navneeth Ramakrishnan +3 more
openaire +8 more sources
Battery Capacity of Energy-Storing Quantum Systems. [PDF]
Physical Review Letters, 2023 The quantum battery capacity is introduced in this Letter as a figure of merit that expresses the potential of a quantum system to store and supply energy.
Xue Yang +7 more
semanticscholar +1 more source