Atmospheric molecular blobs shape up circumstellar envelopes of AGB stars

2024-03-27T13:58:33+01:00Tags: |

Authors: Velilla-Prieto, L.; Fonfria, J. P.; Agundez, M.; Castro-Carrizo, A.; Guelin, M.; Quintana-Lacaci, G.; Cherchneff, I.; Joblin, C.; McCarthy, M. C.; Martin-Gago, J. A.; Cernicharo, J. Journal: NATURE Publication date: 2023/05/25 DOI: 10.1038/s41586-023-05917-9 Abstract: During their thermally pulsing phase, asymptotic giant branch (AGB) stars eject material that forms extended dusty envelopes(1). Visible polarimetric imaging found [...]

Quantum Classical Transition for Mixed States: The Scaled Von Neumann Equation

2024-03-27T13:58:14+01:00Tags: |

Authors: Mousavi, S. V.; Miret-Artes, S. Journal: SYMMETRY-BASEL Publication date: 2023/06/01 DOI: 10.3390/sym15061184 Abstract: In this work, we proposed a smooth transition wave equation from a quantum to classical regime in the framework of von Neumann formalism for ensembles and then obtained an equivalent scaled equation. This led us to develop a scaled statistical theory [...]

Energy transfer in N-component nanosystems enhanced by pulse-driven vibronic many-body entanglement

2024-03-27T13:57:46+01:00Tags: |

Authors: Gomez-Ruiz, Fernando J.; Acevedo, Oscar L.; Rodriguez, Ferney J.; Quiroga, Luis; Johnson, Neil F. Journal: SCIENTIFIC REPORTS Publication date: 2023/11/15 DOI: 10.1038/s41598-023-46256-z Abstract: The processing of energy by transfer and redistribution, plays a key role in the evolution of dynamical systems. At the ultrasmall and ultrafast scale of nanosystems, quantum coherence could in principle [...]

Probing and harnessing photonic Fermi arc surface states using light-matter interactions

2024-03-27T13:57:43+01:00Tags: |

Authors: Garcia-Elcano, Inaki; Merino, Jaime; Bravo-Abad, Jorge; Gonzalez-Tudela, Alejandro Journal: SCIENCE ADVANCES Publication date: 2023/06/02 DOI: 10.1126/sciadv.adf8257 Abstract: Fermi arcs, i.e., surface states connecting topologically distinct Weyl points, represent a paradigmatic manifes-tation of the topological aspects of Weyl physics. We investigate a light-matter interface based on the photonic counterpart of these states and prove that [...]

Training a quantum measurement device to discriminate unknown non-orthogonal quantum states

2024-03-27T13:57:24+01:00Tags: |

Authors: Concha, D.; Pereira, L.; Zambrano, L.; Delgado, A. Journal: SCIENTIFIC REPORTS Publication date: 2023/05/08 DOI: 10.1038/s41598-023-34327-0 Abstract: Here, we study the problem of decoding information transmitted through unknown quantum states. We assume that Alice encodes an alphabet into a set of orthogonal quantum states, which are then transmitted to Bob. However, the quantum channel [...]

Formation of the methyl cation by photochemistry in a protoplanetary disk

2024-03-27T13:57:06+01:00Tags: |

Authors: Berne, Olivier; Martin-Drumel, Marie-Aline; Schroetter, Ilane; Goicoechea, Javier R.; Jacovella, Ugo; Gans, Berenger; Dartois, Emmanuel; Coudert, Laurent H.; Bergin, Edwin; Alarcon, Felipe; Cami, Jan; Roueff, Evelyne; Black, John H.; Asvany, Oskar; Habart, Emilie; Peeters, Els; Canin, Amelie; Trahin, Boris; Joblin, Christine; Schlemmer, Stephan; Thorwirth, Sven; Cernicharo, Jose; Gerin, Maryvonne; Tielens, Alexander; Zannese, Marion; Abergel, [...]

Quantum neural networks with multi-qubit potentials

2024-03-27T13:57:05+01:00Tags: |

Authors: Ban, Yue; Torrontegui, E.; Casanova, J. Journal: SCIENTIFIC REPORTS Publication date: 2023/06/05 DOI: 10.1038/s41598-023-35867-1 Abstract: We propose quantum neural networks that include multi-qubit interactions in the neural potential leading to a reduction of the network depth without losing approximative power. We show that the presence of multi-qubit potentials in the quantum perceptrons enables more [...]

Atmospheric molecular blobs shape up circumstellar envelopes of AGB stars

2023-09-28T15:34:01+02:00Tags: , , , |

Authors: Velilla-Prieto, L.; Fonfria, J. P.; Agundez, M.; Castro-Carrizo, A.; Guelin, M.; Quintana-Lacaci, G.; Cherchneff, I.; Joblin, C.; McCarthy, M. C.; Martin-Gago, J. A.; Cernicharo, J. Journal: NATURE Publication date: 2023/05/25 DOI: 10.1038/s41586-023-05917-9 Abstract: During their thermally pulsing phase, asymptotic giant branch (AGB) stars eject material that forms extended dusty envelopes(1). Visible polarimetric imaging found [...]

Tailored ion beam for precise colour centre creation

2023-02-21T13:36:10+01:00Tags: |

Authors: Tobalina, A.; Munuera-Javaloy, C.; Torrontegui, E.; Muga, J. G.; Casanova, J. Journal: PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES Publication date: 2022/12/26 DOI: 10.1098/rsta.2021.0271 Abstract: We present an invariant-based quantum control scheme leading to a highly monochromatic ion beam from a Paul trap. Our protocol is implementable by supplying the [...]

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