a Capacity Additivity and Parallel Quantum Channels
Many-body physics and the capacity of quantum channels with memory
... of quantum information theory is to try to determine the channel capacity of noisy quantum ...noisy quantum communication ...channel capacity is defined as the optimal rate at which ...
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Feedback Capacity of Parallel ACGN Channels and Kalman Filter: Power Allocation with Feedback
... a parallel of n additive colored Gaussian noise channels given by y k = x k + z k , where {x k } , x k ∈ R n denotes the channel input, {y k } , y k ∈ R n denotes the channel output, and {z k } , z k ∈ R n ...
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Selfcomplementary quantum channels
... the quantum channel capacities are similar, these two notions differ in several ...classical capacity of this channel can be positive, while its quantum capacity is equal to zero, as there ...
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Quantum Capacities of Bosonic Channels
... the quantum capacity of bosonic channels which might describe transmission in space, as light sent through optical fibers, or in time, like in quantum memories ...the quantum ...
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Near-capacity code design for entanglement-assisted classical communication over quantum depolarizing channels
... from the capacity curve is therefore [0.0209 × 1.5] ≈ 0.031 cbits/use. We have also evaluated the BER performance curves for both our 2-qubit and 3-qubit based IRCC-URC-SD schemes, which are shown in Fig. 7. As it ...
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Quantum turbo decoding for quantum channels exhibiting memory
... codes, quantum turbo codes (QTCs) have also been conceived for near-hashing-bound transmission of quantum information over memoryless quantum ...depolarizing channels exhibiting memory and we ...
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Quantum Turbo Decoding for Quantum Channels Exhibiting Memory
... depolarizing channels exhibiting memory has been ...depolarizing channels exhibiting memory has been investigated and it has been shown that the performance of the existing QTC in the low p-value region is ...
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Assisted Quantum Capacity of the Quantum Depolarizing Channel
... asymptotic quantum capacity of the Quantum Depolarizing Channel in the con- text of the zero-capacity ...forward-assisted quantum transmis- sion through the Depolarizing Channel is ...
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Quantum capacity bounds of Gaussian thermal loss channels and achievable rates with Gottesman-Kitaev-Preskill codes
... achieve quantum capacity of Gaussian loss channels up to at most a constant gap from an upper bound of the quantum ...displacement channels, which will be used in later ...of ...
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Quantum information theory: classical communication over quantum channels
... strictly additive due to the combined action of the maximization over output Holevo and the independent, tensor product nature of the parallel channel construction. Let us for the moment change gears, and present ...
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Sphere packing bound for quantum channels
... over quantum channels, focusing on the study of error exponents for optimal codes at rates below the channel ...pure-state channels were obtained by Burnashev and Holevo [1] that are the equivalent ...
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‘Quantum’ Parallel computation with neural networks
... The experimentation used a CMM that stored input and output vectors generated with the same length and weight parameters. The results obtained show that the vector weight does affect the storage capacity in the ...
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Fully-parallel quantum turbo decoder
... Shannon’s capacity limit, QECCs are designed to operate close to the quantum channel’s capacity [13]–[15], or more specifically to the Hashing bound, which constitutes a lower bound on the achievable ...
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Superadditivity in Trade-Off Capacities of Quantum Channels
... Will additivity of single or double resource capacities always lead to additivity of a general resource trade-off region? We will study superadditivity in a general framework that considers the three most ...
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Approximate Unitary n^{2/3}-Designs Give Rise to Quantum Channels with Super Additive Classical Holevo Capacity
... This additivity property leads to a single letter characterization of the capacity of classical channels ...the capacity is nothing but the mutual information between the input and channel ...
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Quantum Teleportation Channel Capacity Coding
... Keywords: Quantum teleportation, Multiple degrees of freedom, Quantum capacity, Graph-state basis, Concatenated ...of quantum Graphic Cascade Coding, information security and quantum ...
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Dense coding capacity of a quantum channel
... same quantum channel, we define its dense coding capacity by optimizing over all adaptive strategies that Alice can implement, while Bob encodes the information by means of Pauli ...coding capacity ...
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On the complementary quantum capacity of the depolarizing channel
... positive quantum capacity (in fact, positive one-shot coherent information) unless the output is exactly ...of quantum channels could retain positive quantum capacity while ...
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Secrecy Capacity of a Class of Broadcast Channels with an Eavesdropper
... of parallel multireceiver wiretap channels for specific scenarios and obtained results similar to [8], only for broader classes of ...secrecy capacity when only indepen- dent messages are transmitted ...
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Quantum Circuits for Quantum Channels
... of quantum channels with quantum computers while minimizing the experimental cost, measured in terms of the number of Controlled- not ( C-not ) gates required (single-qubit gates are ...the ...
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