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27 papers · 2 filters
Exotic correlation spread in free-fermionic states with initial patterns
Sudipto Singha Roy, Giovanni Ramírez, Silvia N. Santalla +2
We describe a relation between the light-cone velocities after a quantum quench and the internal structure of the initial state, in the particular case of free fermions on a chain…
General quantum Chinos games
Daniel Centeno, German Sierra
The Chinos game is a non-cooperative game between players who try to guess the total sum of coins drawn collectively. Semiclassical and quantum versions of this game were proposed…
Quantum magnonics: when magnon spintronics meets quantum information science
H. Y. Yuan, Yunshan Cao, Akashdeep Kamra +2
Spintronics and quantum information science are two promising candidates for innovating information processing technologies. The combination of these two fields enables us to build…
Non-gaussian Entanglement Swapping between Three-Mode Spontaneous Parametric Down Conversion and Three Qubits
A. Agustí Casado, C. Sabín
In this work we study the production and swapping of non-gaussian multipartite entanglement in a setup containing a parametric amplifier which generates three photons in different…
Theory of overparametrization in quantum neural networks
Martin Larocca, Nathan Ju, Diego García-Martín +2
The prospect of achieving quantum advantage with Quantum Neural Networks (QNNs) is exciting. Understanding how QNN properties (e.g., the number of parameters ) affect the loss l…
Causality in a qubit-based quantum switch
Carlos Sabín
We introduce a qubit-based version of the quantum switch, consisting in a variation of the Fermi problem. Two qubits start in a superposition state where one qubit is excited and t…