Atmospheric molecular blobs shape up circumstellar envelopes of AGB stars

2023-11-30T17:20:00+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 neural networks with multi-qubit potentials

2023-11-30T17:19:41+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 [...]

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

2023-11-30T17:19:37+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 [...]

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

2023-11-30T17:19:17+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 [...]

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

2023-11-30T17:19:12+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 [...]

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 [...]

Speeding up quantum perceptron via shortcuts to adiabaticity

2022-04-05T17:41:14+02:00Tags: |

Authors: Ban, Yue; Chen, Xi; Torrontegui, E.; Solano, E.; Casanova, J. Journal: SCIENTIFIC REPORTS Publication date: 2021/03/11 DOI: 10.1038/s41598-021-85208-3 Abstract: The quantum perceptron is a fundamental building block for quantum machine learning. This is a multidisciplinary field that incorporates abilities of quantum computing, such as state superposition and entanglement, to classical machine learning schemes. Motivated [...]

Metal-catalyst-free gas-phase synthesis of long-chain hydrocarbons

2022-04-05T17:40:54+02:00Tags: |

Authors: Martinez, Lidia; Merino, Pablo; Santoro, Gonzalo; Martinez, Jose I.; Katsanoulis, Stergios; Ault, Jesse; Mayoral, Alvaro; Vazquez, Luis; Accolla, Mario; Dazzi, Alexandre; Mathurin, Jeremie; Borondics, Ferenc; Blazquez-Blazquez, Enrique; Shauloff, Nitzan; Lebron-Aguilar, Rosa; Quintanilla-Lopez, Jesus E.; Jelinek, Raz; Cernicharo, Jose; Stone, Howard A.; de la Pena O'Shea, Victor A.; de Andres, Pedro L.; Haller, George; Ellis, [...]

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