Quantum Coherence Lab (QCL)
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In
2005 the Laser
Physics, Quantum Optics and Non-linear Optics Group
has developed a new experimental research line focused on studying slow
and fast light
propagation in solid state materials at room temperature for
applications in telecommunications. Slow (fast) light is the
propagation of an optical pulse at a very low (high) group velocity. We
are developing experiments to generate slow and fast light in
Erbium-doped fibers at 1,5 microns based on coherence population
oscillations (CPO). A weak field propagates in a transparency hole
created in the absorption spectrum by a strong field with a slight
different frequency. The population is forced to oscillate at the beat
frequency between both fields. We look for different parameters to
control the propagation regime.
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- Slow and fast light propagation in ultra highly-doped Erbium fibers: control of pulse distorsion
- Dynamic control of group velocity in erbium doped fibers with coherent population oscillations (CPO) by using active Bragg gratings
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Dr. Miguel A. Antón
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Dr. Eduardo Cabrera-Granado
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Dr. Oscar G. Calderón
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Dr. Fernando Carreño
- Dr. J. M. Ezquerro
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Dr. Sonia Melle
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Ph.D. student Francisco Arrieta-Yánez
- Research lines of the Laser Physics, Quantum Optics and Non-linear Optics UCM group, Optica Pura y Aplicada 44 (2011) 279-288
- Fast light enhancement by bidirectional pumping in erbium-doped fibers, J. Nonlinear Opt. Phys. Mat. 19 (2010) 153-165
- Phase-controlled slow and fast light in current-modulated semiconductor optical amplifiers, J. Phys. B: At. Mol. Opt. Phys. 42 (2009) 095403 (1-8)
- Propagation-induced transition from slow to fast light in highly doped erbium fibers, Phys. Rev. A 78 (2008) 053812 (1-8)
- Effect of ion pairs in fast-light bandwidth in high-concentration erbium-doped fibers, J. Opt. Soc. Am. B 25 (2008) C55-C60
- Modulation-frequency-controlled change from sub- to superluminal regime in highly doped erbium fibers, Optics Letters 33 (2008) 827-829
- Effect of ion concentration on slow light propagation in highly doped erbium fibers, Opt. Commun. 279 (2007) 53-63
- Control of the group
velocity of light in Erbium doped fibers via the modulation frequency
2008 Optics and Photonics Congress. Slow and Fast Light Topical meeting, July 13-16, Boston, Massachusetts, USA [Abstract PDF (159 kB)][Talk PDF (1788 kB)] - Modulation-frequency-controlled
change from sub- to super-luminal regime in highly-doped erbium fibers
2007 2nd Meeting of the Spanish Thematic Network on Quantum and Non-Linear Optics, September 5-7, Salamanca, Spain [Poster JPG (262 kB)] - Slow
light propagation experiments
in highly-doped erbium fibers
2006 Slow and Fast Light Topical meeting, July 23-26, Washington DC [Abstract PDF (159 kB)] [Talk PDF (344 kB)]
“New insights in quantum coherence and non linear optics”
Lugar: Escuela Universitaria de Óptica, UCM Organiza: Quantum Coherence Laboratory
Alberto Favaro (Department of Physcis, Imperial College) July 8, 2008, 15:30
What is blowup? Critical divergencies in self-focusing media explained to physicists [PDF]
Germán de Valcárcel (Departamento de Óptica, Universidad deValencia) June 25, 2008, 13:30
Compresión cuántica de la luz y ruptura espontánea de simetrías espaciales [PDF]
Miguel González-Herráez (Departamento de Electrónica, Universidad de Alcalá) May 21, 2008, 13:30
Slow and fast light in optical fibers [PDF]
Jordi Mompart (Grup d’Optica, Universitat Autònoma de Barcelona) May 7, 2008, 13:00
Atom optics and quantum computation with neutral atoms in optical microstructures [PDF]
Student Research Program 2008/09:
- María Nombela, Graduate
student, UCM
- Gabriel Hernández, Graduate student, UCM
- Joaquín
Ruiz Rivas, Graduate student, UCM
- Marcelo Moreno Suárez, Graduate student, UCM
Master's Research Project 2007/08:
- Francisco
Arrieta
Yañez, Graduate student, Master Program in
Theoretical Physics, UCM
"Sub- and super-luminal light propagation based on coherent population oscilations" [PDF]
Summer student Program 2007:
- Cesar Caro, Undergraduate student, Princeton University
- Alberto Favaro, Undergraduate student, Imperial College, London
- Ana Egatz-Gómez, Graduate student, Arizona State University
This is a photo of our experimental setup
in the QUANTUM COHERENCE LABORATORY
Two month stay of Profesor Zhuo from Jiling University (China) in our lab in 2010 (from left to right, Zhuo, Josemi and Sonia)
Eating paella in La Barraca, Madrid downtown (from left to right, Sonia, Zhuo, Fernando and Miguel)
Visit to Dan Gauthier's Laboratory at Duke University during the postdoctoral stay of Eduardo Cabrera (2007/2008) (from left to right, Sonia, Oscar and Edu)
(from left to right, Oscar, Dan and Edu)
<> International Conference on Coherent and Nonlinear Optics /Laser, Applications, and Technologies ICONO/LAT 2005, St. Petersburg, Russia, 2005 Fernando, Miguel, Eduardo, and Oscar (left to right)
Fernando, Sonia, Oscar and Eduardo (left to right)
<> 2nd Meeting of the Spanish Thematic Network
on Quantum and Non-Linear Optics, Salamanca, SpainIsabel, Oscar, Rosa, Sonia, and Eduardo (left to right)
Last update: June, 2010