Browsing by Author "Wallentowitz, Sascha"
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- ItemA novel method to test atomic quantum correlations(2006) Ivanov, D.; Wallentowitz, Sascha
- ItemAnalytical model of non-Markovian decoherence in donor-based charge quantum bits(2011) Lastra, F.; Reyes Swett, Sebastián Andrés; Wallentowitz, Sascha
- ItemClassicality of atom-atom correlations in weakly interacting condensed Bose gases(2007) Wallentowitz, Sascha
- ItemComment on "Impossibility of Distant Indirect Measurement of the Quantum Zeno Effect"(2005) Wallentowitz, Sascha
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- ItemDecoherence in generalized measurement and the quantum Zeno paradox(2014) Mack, G.; Wallentowitz, Sascha
- ItemDynamics of entanglement between two free atoms with quantized motion(2010) Lastra, F.; Wallentowitz, Sascha
- ItemEmergence of a metastable pointer-state basis in non-Markovian quantum dynamics(2014) Reyes Swett, Sebastián Andrés; Wallentowitz, Sascha
- ItemFotodetección mediante interferometría y sintonización termomecánica de láseres.(2017) Godoy Montecinos, Sergio Juan Pablo; Wallentowitz, Sascha; Pontificia Universidad Católica de Chile. Facultad de FísicaEsta tesis esta constituida por trabajos que se pueden agrupar en dos partes. La primera es sobre usos de un montaje homodino para hacer interferometría óptica, donde se presenta una medición de anticorrelaciones entre las fotodetecciones de las salidas de un separador de haces con reflexiones internas, utilizando una fuente de luz de estado coherente, y trabajos sobre como obtener la fotoestadística de una señal óptica utilizando un sistema homodino de interferometría. En la segunda parte se presenta la construcción de un láser de cavidad externa cuya frecuencia es sintonizable por medio de un control de temperatura.
- ItemHydrothermal improvement for 3R-CuFeO2 delafossite growth by control of mineralizer and reaction atmosphere(2019) Roble Albeal, Martín Cristián; Rojas de la Fuente, Susana Dennis; Wheatley, Robert Alastair; Wallentowitz, Sascha; Cabrera, Alejandro Leopoldo; Díaz Droguett, Donovan Enrique
- ItemIntroduction to the 12th Central European Workshop on Quantum Optics(2006) Manko, M.; Wallentowitz, Sascha
- ItemLocal sampling of the quantum phase-space distribution of a continuous-wave optical beam(2012) Wallentowitz, Sascha; Seifert, Birger; Godoy Montecinos, Sergio Juan Pablo.
- ItemMaking Atom-Atom Correlations Observable by Feedback Control(2006) Ivanov, D.; Wallentowitz, Sascha
- ItemMimicking anti-correlations with classical interference(2013) Godoy Montecinos, Sergio Juan Pablo.; Seifert, Birger; Wallentowitz, Sascha
- ItemMultiple-reflections single-shot dispersion scan for fast ultrashort-pulse measurements(2024) Capdeville, Francisco; Villanueva, Fernando; Hidalgo Rojas, Diego Mauricio; Wahaia, Faustino; Wheatley, Robert; Wallentowitz, Sascha; Volkmann, Ulrich; Seifert, BirgerA single-shot non-interferometric ultrashort-pulse measurement method based on the dispersion scan (d-scan) technique with a substantially extended time span for the pulses to be measured is presented. While single-shot d-scan is typically used for rather short femtosecond pulses, the presented multiple-reflections d-scan (MR d-scan) technique allows measurement of both short and long femtosecond pulses. Single-shot d-scan is currently limited to pulses with a maximum duration of 60 fs using a chromatic dispersion, i.e., a group delay dispersion (GDD) of 4400 fs2 at 840 nm provided by customized random nonlinear crystals. MR d-scan achieves a GDD of 31100 fs2 at 820 nm in this work, but can generally achieve an increase in GDD of up to two orders of magnitude. MR d-scan works with commonly available output couplers, does not rely on a homogeneous, precisely imaged beam profile and has an in-line configuration. As an example, long femtosecond double pulses are measured and reconstructed.
- ItemNon-Markovian decoherence in donor-based charge quantum bits(2011) Lastra, F.; Reyes Swett, Sebastián Andrés; Wallentowitz, Sascha
- ItemOptical properties of millimeter-size metal-organic framework single crystals using THz techniques(2025) Wahaia, Faustino; Kasalynas, Irmantas; Pashnev, Daniil; Valusis, Gintaras; Urbanowicz, Andrzej; Karaliunas, Mindaugas; Singh, Dinesh Pratap; Wallentowitz, Sascha; Seifert, BirgerMetal-organic frameworks (MOFs) crystals are promising emerging materials for terahertz (THz) photonics i.e., for THz wave generation through difference frequency or optical rectification and electrooptic detection, including optical components for THz beam steering. The present work reports optical properties of three different non-centrosymmetric single MOF crystals, grown by an innovative solvo-thermal technique with tunable morphology, termed MOF [Zn(3-ptz)2]n (MIRO-101). THz time-domain spectroscopy (TTDS) in the range of 0.25 - 1.5 THz has been used for the measurement of the transfer function, H(w) of these MOF crystals. Through this experimental function Hexp(w), optical parameters such as refractive index, nMOF(w) and absorption coefficient, aMOF(w) have been calculated for the analysis of the optical properties of this crystal. The results indicate that this MOF crystal offers opportunities for long-term exploration of properties toward the creation of novel nonlinear THz photonics materials, as a THz radiation emitter via Different Frequency Generation (DFG) or Optical Rectification (OR) and Electro-optic (EO) detection via optical sampling, including for its use in optoelectronics, and materials science.
- ItemOptimal lossy quantum interferometry in phase space(2017) Klimov, A.; Zwierz, M.; Wallentowitz, Sascha; Jarzyna, M.; Banaszek, K.
- ItemPhonon-induced entanglement dynamics of two donor-based charge quantum bits(2012) Lastra, F.; Reyes Swett, Sebastián Andrés; Wallentowitz, Sascha