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Quantum reading capacity [PDF]
New Journal of Physics, 2011 The readout of a classical memory can be modelled as a problem of quantum channel discrimination, where a decoder retrieves information by distinguishing the different quantum channels encoded in each cell of the memory [S. Pirandola, Phys. Rev. Lett. 106, 090504 (2011)].
PIRANDOLA S +4 more
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On the Capacity Region of a Quantum Switch with Entanglement Purification [PDF]
IEEE Conference on Computer Communications, 2022 Quantum switches are envisioned to be an integral component of future entanglement distribution networks. They can provide high quality entanglement distribution service to end-users by performing quantum operations such as entanglement swapping and ...
Nitish K. Panigrahy +3 more
semanticscholar +1 more source
Multimode capacity of atomic-frequency comb quantum memories [PDF]
Quantum Science and Technology, 2022 Ensemble-based quantum memories are key to developing multiplexed quantum repeaters, able to overcome the intrinsic rate limitation imposed by finite communication times over long distances.
A. Ortu +7 more
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Channel capacity of relativistic quantum communication with rapid interaction [PDF]
Physical Review D, 2022 In this work we study nonperturbatively the transmission of classical and quantum information in globally hyperbolic spacetimes, where the communication channel is between two qubit detectors interacting with a quantized massless scalar field via delta ...
Erickson Tjoa, Kensuke Gallock-Yoshimura
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Quantum Capacity Bounds of Gaussian Thermal Loss Channels and Achievable Rates With Gottesman-Kitaev-Preskill Codes [PDF]
IEEE Transactions on Information Theory, 2018 Gaussian thermal loss channels are of particular importance to quantum communication theory since they model realistic optical communication channels. Except for special cases, the quantum capacity of Gaussian thermal loss channels is not yet quantified ...
Kyungjoo Noh +2 more
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Coherent information of a quantum channel or its complement is generically positive [PDF]
Quantum, 2022 The task of determining whether a given quantum channel has positive capacity to transmit quantum information is a fundamental open problem in quantum information theory.
Satvik Singh, Nilanjana Datta
doaj +1 more source
Capacity and quantum mechanical tunneling [PDF]
Communications in Mathematical Physics, 1981 We connect the notion of capacity of sets in the theory of symmetric Markov process and Dirichlet forms with the notion of tunneling through the boundary of sets in quantum mechanics. In particular we show that for diffusion processes the notion appropriate to a boundary without tunneling is more refined than simply capacity zero.
Albeverio, Sergio +3 more
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Optimal storage capacity of quantum Hopfield neural networks
Physical Review Research, 2023 Quantum neural networks form one pillar of the emergent field of quantum machine learning. Here quantum generalizations of classical networks realizing associative memories—capable of retrieving patterns, or memories, from corrupted initial states—have ...
Lukas Bödeker +2 more
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Quantum Flags and New Bounds on the Quantum Capacity of the Depolarizing Channel. [PDF]
Physical Review Letters, 2019 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 σ_{0} whenever the messages are transmitted ...
Marco Fanizza +2 more
semanticscholar +1 more source
Resource theory of unextendibility and nonasymptotic quantum capacity [PDF]
Physical Review A, 2018 In this paper, we introduce the resource theory of unextendibility as a relaxation of the resource theory of entanglement. The free states in this resource theory are the k-extendible states, associated with the inability to extend quantum entanglement ...
Eneet Kaur +3 more
semanticscholar +1 more source