Results 61 to 70 of about 5,151,731 (334)
Classical capacity of quantum channels with memory
We investigate the classical capacity of two quantum channels with memory: a periodic channel with depolarizing channel branches, and a convex combination of depolarizing channels. We prove that the capacity is additive in both cases. As a result, the channel capacity is achieved without the use of entangled input states.
Dorlas, T. C., Morgan, Ciara
openaire +2 more sources
Classical capacities of quantum channels with environment assistance [PDF]
A quantum channel physically is a unitary interaction between the information carrying system and an environment, which is initialized in a pure state before the interaction. Conventionally, this state, as also the parameters of the interaction, is assumed to be fixed and known to the sender and receiver.
S. Karumanchi+3 more
openaire +5 more sources
Classical Capacity for a Continuous Variable Teleportation Channel [PDF]
The process of quantum teleportation can be considered as a quantum channel. The exact classical capacity of the continuous variable teleportation channel is given. Also, the channel fidelity is derived. Consequently, the properties of the continuous variable quantum teleportation are discussed and interesting results are obtained.
Tao Qin, Yong-De Zhang, Meisheng Zhao
openaire +4 more sources
Classical fluids of negative heat capacity [PDF]
It is shown that new parametersX can be defined such that the heat capacity Cx≡T(∂S/∂T)x is negative, even when the canonical ensemble [i.e., at fixed T=(∂U/∂S)Y and Y≠X] is stable. This implies an extension of the classical theory of polytropes from ideal gases to general fluids.
R. P. Woodard, P. T. Landsberg
openaire +6 more sources
On the constrained classical capacity of infinite-dimensional covariant quantum channels [PDF]
The additivity of the minimal output entropy and that of the χ-capacity are known to be equivalent for finite-dimensional irreducibly covariant quantum channels.
A. Holevo
semanticscholar +1 more source
Equivalence relations for the classical capacity of single-mode Gaussian quantum channels. [PDF]
We prove the equivalence of an arbitrary single-mode Gaussian quantum channel and a newly defined fiducial channel preceded by a phase shift and followed by a Gaussian unitary operation.
J. Schäfer+4 more
semanticscholar +1 more source
Data‐driven performance metrics for neural network learning
Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri+2 more
wiley +1 more source
Degeneracy and Its Impact on the Decoding of Sparse Quantum Codes
The well-documented capacity-approaching performance of sparse codes in the realm of classical communications has inspired the search for their quantum counterparts.
Patricio Fuentes+3 more
doaj +1 more source
Failure surface for shallow foundations in sand using a classical bearing capacity
Much effort has been made to elucidate the ultimate capacity of shallow foundations under the general cases of vertical (V), lateral (H), and moment (M) loads in soils.
Hiroyoshi Hirai
doaj
Over the past two decades, humanitarian conduct has been drifting away from the classical paradigm. This drift is caused by the blurring of boundaries between development aid and humanitarianism and the increasing reliance on digital technologies and ...
Marc J. C. van den Homberg+2 more
doaj +1 more source