Michele Saba

 

Dipartimento di Fisica

Universita di Cagliari

+39 070 675 4872

saba at unica.it

Novel optical materials


M. Saba et al. Light-Induced Charged and Trap States in Colloidal Nanocrystals Detected by Variable Pulse Rate Photoluminescence Spectroscopy, ACS Nano 7, 229–238 (2013).


M. Marceddu, M. Saba et al. Charged excitons, Auger recombination and optical gain in CdSe/CdS nanocrystals, Nanotechnology 23, 015201 (2012)


F. Quochi, M. Saba et al., Ultrafast Dynamics of Intersystem Crossing and Resonance Energy Transfer in Er(III)−Quinolinolate Complexes, Journal of Chemical Physics Letters 1, 2733 (2010)


A. Gocalinska, M. Saba et al., Size-Dependent Electron Transfer from Colloidal PbS Nanocrystals to Fullerene, Journal of Chemical Physics Letters 1, 1149 (2010)


M. Saba et al., Exciton-exciton interaction and optical gain in colloidal CdSe/CdS dot/rod nanocrystals, Advanced Materials 21, 4942 (2009)


F. Quochi, F. Artizzu, M. Saba et al., Population Saturation in Trivalent Erbium Sensitized by Organic Molecular Antennae, Journal of Physical Chemistry Letters 1, 141 (2010)


F. Quochi, M. Saba et al., Temperature Tuning of Nonlinear Exciton Processes in Self-Assembled Oligophenyl Nanofibers under Laser Action, Advanced Materials 20, 3017 (2008)


K. Szendrei et al., Solution-Processable Near-IR Photodetectors Based on Electron Transfer from PbS Nanocrystals to Fullerene Derivatives, Advanced Materials 21, 683 (2009)


F. Cordella, F. Quochi, M. Saba, et al., Optical Gain Performance of Epitaxially Grown para-Sexiphenyl Films, Advanced Materials 19, 2252 (2007)


F. Artizzu et al., New Insights on Near-Infrared Emitters Based on Er-quinolinolate Complexes: Synthesis, Characterization, Structural, and Photophysical Properties, Advanced Functional Materials 17, 2365-2376 (2007)



Ultracold atoms


M. Saba et al, Light scattering to determine the relative phase of two Bose-Einstein Condensates, Science 307, 1945 (2005).


Y. Shin, M. Saba et al., Atom interferometry with Bose-Einstein condensates in a double-well potential, Phys. Rev. Letters 92, 050405 (2004)


Y. Shin, M. Saba et al., Dynamical Instability of a Doubly Quantized Vortex in a Bose-Einstein condensate, Phys. Rev. Letters 93, 160406 (2004)


Y. Shin, M. Saba et al., Distillation of Bose-Einstein condensates in a double-well potential, Phys. Rev. Letters, 92, 150401 (2004)


T. A. Pasquini et al, Quantum reflection of atoms from a solid surface at normal incidence, Phys. Rev. Letters 93, 223201 (2004)


A. E. Leanhardt, T. A. Pasquini, M. Saba et al., Cooling Bose-Einstein Condensates Below 500 Picokelvin, Science 301, 1513 (2003)


Y. Shin et al., Interference of Bose-Einstein condensates split with an atom chip, Phys. Rev. A 72, 021604(R) (2005)


Y. Shin, G.-B. Jo, M. Saba, et al., Optical Weak Link between Two Spatially Separate Bose-Einstein Condensates, Phys. Rev. Letters 95, 170402 (2005)


T. A. Pasquini, M. Saba et al., Low velocity quantum reflection of Bose-Einstein condensates, Phys. Rev. Letters 97, 093201 (2006)


G.-B. Jo et al., Long Phase Coherence Time and Number Squeezing of Two Bose-Einstein Condensates on an Atom Chip, Phys. Rev. Letters 98, 030407 (2007)


C. A. Christensen, S. Will, M. Saba et al., Trapping of ultracold atoms in a hollow-core photonic crystal fiber, Phys. Rev. A 78, 033429 (2008)



Semiconductor Microcavities


S. Kundermann, M. Saba et al., Coherent Control of Polariton Parametric Scattering in Semiconductor Microcavities, Phys. Rev. Letters 91, 177402 (2003)


M. Saba et al., High-temperature ultrafast polariton parametric amplification in semiconductor microcavities, Nature 414, 731 (2001)


M. Saba et al., Crossover from exciton to biexciton polaritons in semiconductor microcavities, Phys. Rev. Letters 85, 385 (2000)


M. Saba et al., Direct observation of the excitonic ac Stark splitting in a quantum well, Phys. Rev. B 62, R13622 (2000)


F. Quochi, M. Saba, et al., Direct observation of an ac Stark splitting in semiconductor microcavities excited above the continuum onset, Phys. Rev. B 61, R5113 (2000)


F. Quochi et al., Strong coherent gain from semiconductor microcavities in the regime of excitonic saturation, Phys. Rev. B 59, R15594 (1999)


M. Saba et al., Towards a room-temperature polariton amplifier, Semiconductor Science and Technology 18, S325 (2003)


M. Saba et al., Polariton parametric amplification in semiconductor microcavities, Journal of Modern Optics 49, 2437, Sp. Iss. SI. (2002)

selected publications