397 citations · 423 across the 6 of their papers we have counts for
6 papers
Algorithmic Superactivation of Asymptotic Quantum Capacity of Zero-Capacity Quantum Channels
Laszlo Gyongyosi, Sandor Imre
The superactivation of zero-capacity quantum channels makes it possible to use two zero-capacity quantum channels with a positive joint capacity for their output. Currently, we hav…
Quasi-Superactivation of Classical Capacity of Zero-Capacity Quantum Channels
Laszlo Gyongyosi, Sandor Imre
One of the most surprising recent results in quantum Shannon theory is the superactivation of the quantum capacity of a quantum channel. This phenomenon has its roots in the extrem…
An Improvement in Quantum Fourier Transform
Laszlo Gyongyosi, Sandor Imre
Singular Value Decomposition (SVD) is one of the most useful techniques for analyzing data in linear algebra. SVD decomposes a rectangular real or complex matrix into two orthogona…
A Quantum Copy-Protection Scheme with Authentication
Laszlo Gyongyosi, Sandor Imre
We propose a quantum copy-protection system which protects classical information in the form of non-orthogonal quantum states. The decryption of the stored information is not possi…
Quantum-assisted and Quantum-based Solutions in Wireless Systems
Sandor Imre, Laszlo Gyongyosi
In wireless systems there is always a trade-off between reducing the transmit power and mitigating the resultant signal-degradation imposed by the transmit-power reduction with the…
Superactivation of Quantum Channels is Limited by the Quantum Relative Entropy Function
Laszlo Gyongyosi, Sandor Imre
In this work we prove that the possibility of superactivation of quantum channel capacities is determined by the mathematical properties of the quantum relative entropy function. B…