Fernandes, Mário Foganholi Neves, Leonardo
Published in
Scientific Reports

Ptychography is an imaging technique in which a localized illumination scans overlapping regions of an object and generates a set of diffraction intensities used to computationally reconstruct its complex-valued transmission function. We propose a quantum analogue of this technique designed to reconstruct d-dimensional pure states. A set of n rank-...

Egorov, Vladimir V.
Published in
Heliyon

Atomic physics; Condensed matter physics; Electromagnetism; Molecular physics; Optics; Quantum mechanics; Physics methods; Theoretical physics; Quantum mechanics; Molecular quantum transitions; Singularity; Dozy chaos; Quantum-classical mechanics; Electron transfer; Condensed matter; Applications

Singh, J.S.
Published in
Heliyon

Biochemistry; Molecular physics; Quantum mechanics; Theoretical chemistry; Thermodynamics; Mulliken atomic charges; Atomic polarizability tensor charges; Vibrational mode of pyrimidine ring; Density functional theory

Schröder, Florian A. Y. N. Turban, David H. P. Musser, Andrew J. Hine, Nicholas D. M. Chin, Alex W.
Published in
Nature Communications

Simulating ultrafast quantum dissipation in molecular excited states is a strongly demanding computational task. Here, the authors combine tensor network simulation, entanglement renormalisation and machine learning to simulate linear vibronic models, and test the method by analysing singlet fission dynamics.

Matos, Tonatiuh Avilez, Ana Bernal, Tula Chavanis, Pierre-Henri
Published in
General Relativity and Gravitation

Classical solutions of the Klein–Gordon equation are used in astrophysics to model galactic halos of scalar field dark matter and compact objects such as cores of neutron stars. These bound solutions are interpreted as Bose–Einstein condensates whose particle number density is governed by the Gross–Pitaevskii (GP) equation. It is well known that th...

Pan, A. K.
Published in
Scientific Reports

An ontological model of an operational theory is considered to be universally noncontextual if both preparation and measurement noncontextuality assumptions are satisfied in that model. In this report, we first generalize the logical proofs of quantum preparation and measurement contextuality for qubit system for any odd number of preparations and ...

Teychené, Johanne Roux-de Balmann, Hélène Maron, Laurent Galier, Sylvain

Ion hydration phenomena are of great interest in the fields of physics, chemistry, biology, geochemistry and environment. However, few studies using identical calculation methods to characterize the hydration properties of ions in water and in electrolytic systems are available. Hence, it is difficult to compare the hydration properties of ions whe...

Maleki, Yusef Zheltikov, Aleksei M.
Published in
Scientific Reports

A harmonically driven cavity QED system consisting of two cavities and a two-level qubit is shown to enable the generation of a vast class of maximally entangled states suitable for measurements with a Heisenberg-limit precision. As one of its modalities, this system can serve as a quantum beam splitter, converting an |N〉 ⊗ |0〉 input into a maximal...

Carrasco, Sebastián Rogan, José Valdivia, Juan Alejandro
Published in
Scientific Reports

A fast and robust approach to controlling the quantum state of a multi-level quantum system is investigated using a twofrequency time-varying potential. A comparison with other related approaches in the context of a two-level system is also presented, showing similar times and fidelities. As a concrete example, we study the problem of a particle in...

Utreras-Alarcón, A. Rivera-Tapia, M. Niklitschek, S. Delgado, A.
Published in
Scientific Reports

Real-valued functions of complex arguments violate the Cauchy-Riemann conditions and, consequently, do not have Taylor series expansion. Therefore, optimization methods based on derivatives cannot be directly applied to this class of functions. This is circumvented by mapping the problem to the field of the real numbers by considering real and imag...