4 papers · 1 filter
Storage capacity and learning capability of quantum neural networks
Maciej Lewenstein, Aikaterini Gratsea, Andreu Riera-Campeny +3
We study the storage capacity of quantum neural networks (QNNs) described as completely positive trace preserving (CPTP) maps, which act on an -dimensional Hilbert space. We dem…
Universal and optimal coin sequences for high entanglement generation in 1D discrete time quantum walks
Aikaterini Gratsea, Friederike Metz, Thomas Busch
Entanglement is a key resource in many quantum information applications and achieving high values independently of the initial conditions is an important task. Here we address the…
Generation of hybrid maximally entangled states in a one-dimensional quantum walk
Aikaterini Gratsea, Maciej Lewenstein, Alexandre Dauphin
We study the generation of hybrid entanglement in a one-dimensional quantum walk. In particular, we explore the preparation of maximally entangled states between position and spin…
Photon-assisted quantum state transfer and entanglement generation in spin chains
A. Gratsea, G. M. Nikolopoulos, P. Lambropoulos
We propose a protocol for state transfer and entanglement generation between two distant spin qubits (sender and receiver) that have different energies. The two qubits are permanen…