A5019191776- Spectroscopy and Quantum Chemical Studies
- Material Dynamics and Properties
- Photochemistry and Electron Transfer Studies
- Terahertz technology and applications
- Spectroscopy and Laser Applications
- Thermodynamic properties of mixtures
- Molecular spectroscopy and chirality
- Random lasers and scattering media
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Photonic Crystals and Applications
- Crystallization and Solubility Studies
- Acoustic Wave Phenomena Research
- Electron Spin Resonance Studies
- Organic and Molecular Conductors Research
- Seismic Waves and Analysis
- Liquid Crystal Research Advancements
- Photonic and Optical Devices
- Mechanical and Optical Resonators
- Glass properties and applications
- Advanced Fiber Laser Technologies
- Ultrasonics and Acoustic Wave Propagation
- Phase Equilibria and Thermodynamics
- Acoustic Wave Resonator Technologies
- Membrane-based Ion Separation Techniques
University of Florence
2016-2025
National Institute of Optics
2014-2025
European Theoretical Spectroscopy Facility
2018-2024
Sapienza University of Rome
2005-2008
Istituto Nazionale per la Fisica della Materia
2002-2004
Interuniversity Consortium for Magnetic Resonance
2004
University of Basilicata
2004
University of Bonn
2004
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
2000-2003
Sorbonne Université
1998
Practical implementation of highly coherent molecular spin qubits for challenging technological applications, such as quantum information processing or sensing, requires precise organization electronic qubit components into extended frameworks. Realization spatial control over qubit–qubit distances can be achieved by coordination chemistry approaches through an appropriate choice the building blocks. However, translating single units arrays does not guarantee a priori retention long...
We report on a new random laser phenomenon that gives rise to narrow emission modes without requiring optical cavities. Sharp peaks are observed experimentally over broad range of scattering strengths and analyzed in numerical calculations. find the introduction exponential gain multiple light process strongly increases importance very long paths. Such paths rare often neglected passive disordered materials but we show they can dominate spectrum from an amplifying system.
Here we report the investigation of magnetization dynamics a vanadyl complex with diethyldithiocarbamate (Et2dtc–) ligands, namely [VO(Et2dtc)2] (1), in both solid-state and frozen solution. This showed an anomalous unprecedentedly observed field dependence relaxation time, which was modeled three contributions to mechanism. The temperature weight two processes dominating at low fields found well correlate energy vibrations as determined by THz spectroscopy. detailed experimental comparative...
Control of spin-lattice magnetic relaxation is crucial to observe long quantum coherence in spin systems at reasonable temperatures. Such a control most often extremely difficult achieve, because the coexistence several mechanisms, that direct, Raman, and Orbach. These are not always easy relate energy states investigated system, contribution additional spin-phonon coupling phenomena mediated by intramolecular vibrations. In this work, we have effect slight changes on molecular structure...
Paramagnetic molecules can show long spin-coherence times, which make them good candidates as quantum bits (qubits). Reducing the efficiency of spin–phonon interaction is primary challenge toward achieving coherence times over a wide temperature range in soft molecular lattices. The lack microscopic understanding about role vibrations spin relaxation strongly undermines possibility chemically designing better-performing qubits. Here we report first-principles characterization main mechanism...
We report on an experimental and numerical study of chaotic behavior in random lasers. The complex emission spectra from a disordered amplifying material with static disorder are investigated configuration controlled, stable conditions. It is found that, upon repeated identical excitation, the distinct uncorrelated. This can be understood terms strongly coupled modes that triggered by spontaneous emission, expected to play important role most pulsed
The spectral purity of quantum cascade lasers (QCL) suggests their use in high-precision metrology applications at terahertz wavelengths. By combining a QCL with THz frequency comb, scientists have been able to measure the rotational transition gas (methanol) record-breaking precision four parts one billion.
Abstract The coherence time of the 17‐electron, mixed sandwich complex [CpTi(cot)], (η 8 ‐cyclooctatetraene)(η 5 ‐cyclopentadienyl)titanium, reaches 34 μs at 4.5 K in a frozen deuterated toluene solution. This is remarkable for highly protonated molecule. intramolecular distances between Ti and H atoms provide good compromise instantaneous spin diffusion sources decoherence. Ab initio calculations molecular crystal packing levels reveal that characteristic low‐energy ring rotations framework...
Walking on irregular terrains is a common situation in everyday life. The accurate detection of gait events paramount importance for characterizing and analyzing gait. While several algorithms have been proposed timing estimation flat terrains, an assessment their performance ecological-like still lacking. purpose the present study to evaluate event algorithms, as literature, temporal segmentation across different terrains. Nine healthy volunteers, each mounted with 17 tri-axial inertial...
We propose a time-resolved optical Kerr effect study of the structural and vibrational dynamics hydration water surrounding lysozyme on very fast time scale. Measurements as function concentration make it possible to distinguish contribution from that both bulk protein. Our results provide experimental evidence existence two water, associated with hydrogen bond exchange relaxation process reorganization molecules induced by protein fluctuations. Likewise, we evaluated layer at subpicosecond...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBulk Properties of Synthetic Polymer-Inorganic Salt Systems. II. Crystallization Kinetics Salted Poly(caproamide)E. Bianchi, A. Ciferri, Tealdi, R. Torre, and B. ValentiCite this: Macromolecules 1974, 7, 4, 495–500Publication Date (Print):July 1, 1974Publication History Published online1 May 2002Published inissue 1 July 1974https://pubs.acs.org/doi/10.1021/ma60040a017https://doi.org/10.1021/ma60040a017research-articleACS PublicationsRequest reuse...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of local liquid structure on orientational dynamics: isotropic phase crystalsJohn J. Stankus, Renato Torre, and M. D. FayerCite this: Phys. Chem. 1993, 97, 37, 9478–9487Publication Date (Print):September 1, 1993Publication History Published online1 May 2002Published inissue 1 September 1993https://doi.org/10.1021/j100139a036RIGHTS & PERMISSIONSArticle Views204Altmetric-Citations73LEARN ABOUT THESE METRICSArticle Views are the...
Molecular electronic spins are good candidates as qubits since they characterized by a large tunability of their and magnetic properties through rational chemical design. Coordination compounds light transition metals promising systems for spin-based quantum information technologies, thanks to long spin coherence times up room temperature. Our work aims at presenting an in-depth study on how the spin-phonon coupling in vanadyl-acetylacetonate, [VO(acac)2], can change function temperature...
The low frequency (nu < 500 cm(-1)) vibrational spectra of hydrated porous silica are specifically sensitive to the hydrogen bond interactions and provide a wealth information on structural dynamical properties water contained in pores matrix. We investigate systematically this spectral region for series Vycor samples (pore size approximately equal 4 nm) at different levels hydration, from dry matrix completely filled pores. obtained as Fourier transforms time-resolved heterodyne detected...
Abstract The coherence time of the 17‐electron, mixed sandwich complex [CpTi(cot)], (η 8 ‐cyclooctatetraene)(η 5 ‐cyclopentadienyl)titanium, reaches 34 μs at 4.5 K in a frozen deuterated toluene solution. This is remarkable for highly protonated molecule. intramolecular distances between Ti and H atoms provide good compromise instantaneous spin diffusion sources decoherence. Ab initio calculations molecular crystal packing levels reveal that characteristic low‐energy ring rotations framework...