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Adsorption of molecular hydrogen on extended graphene prototypes decorated with sodium: a quantum-mechanical study

Adsorption of molecular hydrogen on extended graphene prototypes decorated with sodium: a quantum-mechanical study

Marcelo Castellanos2025-04-29T13:40:01+02:00Tags: Esther García Arroyo, Multidisciplinary. , Physics|

Authors: Garcia-Arroyo, Esther; Bartolomei, Massimiliano; Hernandez, Marta, I; Gonzalez-Lezana, Tomas; Mella, Massimo; Campos-Martinez, Jose Journal: PHYSICA SCRIPTA Publication date: 2025/01/01 DOI: 10.1088/1402-4896/ad9e4b Abstract: This paper presents a study of sodium-decorated circumcircumcoronene, a large polycyclic aromatic hydrocarbon (PAH) regarded as a graphene prototype, and the complexes formed upon aggregation of hydrogen molecules on this substrate. [...]

Electron Scattering Cross Sections from Thiazole for Impact Energies Ranging from 1 to 1000 eV

Marcelo Castellanos2025-04-29T11:13:28+02:00Tags: Biochemistry & Molecular Biology; Chemistry, Multidisciplinary. |

Authors: Garcia-Abenza, Adrian; Lozano, Ana I.; Oller, Juan C.; Rosado, Jaime; Blanco, Francisco; Limao-Vieira, Paulo; Garcia, Gustavo Journal: MOLECULES Publication date: 2025/03/01 DOI: 10.3390/molecules30051097 Abstract: Total electron scattering cross sections (TCSs), in the energy range of 1-100 eV, have been measured with a high-resolution magnetically confined electron transmission apparatus, with total uncertainty limits estimated to [...]

Encoding quantum bits in bound electronic states of a graphene nanotorus

Marcelo Castellanos2025-04-29T11:13:24+02:00Tags: Multidisciplinary. , Physics|

Authors: Furtado, J.; Ramos, A. C. A.; Silva, J. E. G.; Bachelard, R.; Santos, Alan C. Journal: ANNALS OF PHYSICS Publication date: 2025/01/01 DOI: 10.1016/j.aop.2024.169862 Abstract: We propose to use the quantum states of an electron trapped on the inner surface of a graphene nanotorus to realize as a new kind of physical quantum bit, [...]

Quantum steering ellipsoids and quantum obesity in critical systems

Marcelo Castellanos2025-04-29T11:13:17+02:00Tags: Multidisciplinary. , Physics|

Authors: Rosario, Pedro; Santos, Alan c. Journal: EPL Publication date: 2025/01/01 DOI: 10.1209/0295-5075/ad8f5e Abstract: - Quantum obesity (QO) is a novel function introduced to quantify quantum correlations that go beyond traditional measures like entanglement, while also functioning as an entanglement witness. One of the key strengths of QO lies in its analyticity for arbitrary states [...]

Dipole-dipole interactions mediated by a photonic flat band

Marcelo Castellanos2025-04-29T11:13:11+02:00Tags: Multidisciplinary. , Quantum Science & Technology; Physics|

Authors: Di Benedetto, Enrico; Gonzalez-Tudela, Alejandro; Ciccarello, Francesco Journal: QUANTUM Publication date: 2025/03/25 DOI: Abstract: Flat bands (FBs) are energy bands with zero group velocity, which in electronic systems were shown to favor strongly correlated phenomena. Indeed, a FB can be spanned with a basis of strictly localized states, the so called compact localized states [...]

Light-matter correlations in Quantum Floquet engineering of cavity quantum materials

Marcelo Castellanos2025-04-29T11:13:10+02:00Tags: Multidisciplinary. , Quantum Science & Technology; Physics|

Authors: Perez-Gonzalez, Beatriz; Platero, Gloria; Gomez-Leon, Alvaro Journal: QUANTUM Publication date: 2025/02/06 DOI: Abstract: Quantum Floquet engineering (QFE) seeks to generalize the control of quantum systems with classical external fields, widely known as Semi-Classical Floquet engineering (SCFE), to quantum fields. However, to faithfully capture the physics at arbitrary coupling, a gauge-invariant description of light-matter interaction [...]

Long-Range Interactions in Weyl-Dense Atomic Arrays Protected from Dissipation and Disorder

Marcelo Castellanos2025-04-29T11:13:08+02:00Tags: Multidisciplinary. , Physics|

Authors: Garcia-Elcano, Inaki; Huidobro, Paloma A.; Bravo-Abad, Jorge; Gonzalez-Tudela, Alejandro Journal: PHYSICAL REVIEW LETTERS Publication date: 2025/03/28 DOI: 10.1103/PhysRevLett.134.123602 Abstract: Long-range interactions are a key resource in many quantum phenomena and technologies. Free-space photons mediate power-law interactions but lack tunability and suffer from decoherence processes due to their omnidirectional emission. Engineered dielectrics can yield tunable [...]

Scalable quantum eraser with superconducting integrated circuits

Marcelo Castellanos2025-04-29T11:13:07+02:00Tags: Multidisciplinary. , Quantum Science & Technology; Physics|

Authors: Diniz, Ciro Micheletti; Villas-Boas, Celso J.; Santos, Alan C. Journal: QUANTUM SCIENCE AND TECHNOLOGY Publication date: 2025/04/01 DOI: 10.1088/2058-9565/adbded Abstract: A fast and scalable scheme for multi-qubit resetting in superconducting quantum processors is proposed by exploiting the feasibility of frequency-tunable transmon qubits and transmon-like couplers to engineer a full programmable superconducting erasing head. We [...]

Exact Quantization of Nonreciprocal Quasilumped Electrical Networks

Marcelo Castellanos2025-04-29T11:13:02+02:00Tags: Multidisciplinary. , Physics|

Authors: Parra-Rodriguez, A.; Egusquiza, I. L. Journal: PHYSICAL REVIEW X Publication date: 2025/03/28 DOI: 10.1103/PhysRevX.15.011072 Abstract: Following a consistent geometrical description previously introduced [Quantum 8, 1466 (2024)], we present an exact method for obtaining canonically quantizable Hamiltonian descriptions of nonlinear, nonreciprocal quasilumped electrical networks. We identify and classify singularities arising in the quest for Hamiltonian [...]

Adsorption of molecular hydrogen on extended graphene prototypes decorated with sodium: a quantum-mechanical study

Marcelo Castellanos2025-04-29T11:13:01+02:00Tags: Multidisciplinary. , Physics|

Authors: Garcia-Arroyo, Esther; Bartolomei, Massimiliano; Hernandez, Marta, I; Gonzalez-Lezana, Tomas; Mella, Massimo; Campos-Martinez, Jose Journal: PHYSICA SCRIPTA Publication date: 2025/01/01 DOI: 10.1088/1402-4896/ad9e4b Abstract: This paper presents a study of sodium-decorated circumcircumcoronene, a large polycyclic aromatic hydrocarbon (PAH) regarded as a graphene prototype, and the complexes formed upon aggregation of hydrogen molecules on this substrate. Accurate [...]