Person
Cristiano Ciuti
Related publications (38)
Towards a room-temperature polariton amplifier
Benoît Marie Joseph Deveaud, Stefan Kundermann, Cristiano Ciuti, Michele Saba
Microcavity exciton polaritons, the fundamental optical excitations of semiconductor microcavities with quantum wells inside, have been proposed as promising candidates for observing stimulated scattering, condensation and other phenomena related to the bo ...
2003Polariton amplification in semiconductor microcavities
Benoît Marie Joseph Deveaud, Stefan Kundermann, Cristiano Ciuti, Michele Saba
Microcavity exciton polaritons, the fundamental optical excitations of semiconductor microcavities with quantum wells inside, have been proposed as promising candidates for observing stimulated scattering, condensation and other phenomena related to the bo ...
2003Coherent control of polariton parametric scattering in semiconductor microcavities
Benoît Marie Joseph Deveaud, Ursula Oesterle, Stefan Kundermann, Cristiano Ciuti, Michele Saba
In a pump-probe experiment, we have been able to control, with phase-locked probe pulses, the ultrafast nonlinear optical emission of a semiconductor microcavity, arising from polariton parametric amplification. This evidences the coherence of the polarito ...
American Physical Society2003Polariton parametric amplification in semiconductor microcavities
Benoît Marie Joseph Deveaud, Stefan Kundermann, Cristiano Ciuti, Michele Saba
Modifying the photonic environment of a semiconductor quantum well by embedding it in a high-reflectivity microcavity gives rise to new fundamental optical excitations, half-quantum well excitons, half-photons. These particles, called polaritons, have a li ...
2002Towards a room temperature polariton amplifier
Benoît Marie Joseph Deveaud, Stefan Kundermann, Cristiano Ciuti, Michele Saba
We engineer a semiconductor microcavity through an appropriate choice of geometry and materials in order to maximise the exciton-photon coupling. The polaritonic nonlinearities in such devices survive at high temperatures and high excitation densities. We ...
2002Quantum kinetics of parametric polariton scattering in microcavities
Benoît Marie Joseph Deveaud, Stefan Kundermann, Cristiano Ciuti, Michele Saba
An investigation of the parametric amplification and its coherent control in a semiconductor micro-cavity is presented. The time and angle resolved pump and probe experiments show that several ps after pumping parametric scattering is still phase coherent. ...
2002High-temperature ultrafast polariton parametric amplification in semiconductor microcavities
Benoît Marie Joseph Deveaud, Stefan Kundermann, Cristiano Ciuti, Michele Saba
Cavity polaritons, the elementary optical excitations of semiconductor microcavities, may be understood as a superposition of excitons and cavity photons(1). Owing to their composite nature, these bosonic particles have a distinct optical response, at the ...
2001Femtosecond dynamics and non-linearities of exciton-photon coupling in semiconductor microstructures
Benoît Marie Joseph Deveaud, Cristiano Ciuti, Michele Saba
We have studied the femtosecond dynamics of excitonic resonances in quantum well microcavities under strong excitation. Very strong non-linearities are observed, which bear clear resemblance to the non-linearities of an atomic two-level system. The fact th ...
2001The microcavity AC Stark triplet: Excitation in the exciton continuum
Benoît Marie Joseph Deveaud, Ursula Oesterle, Cristiano Ciuti, Michele Saba
The coherent optical response of high quality microcavities containing quantum wells is investigated. The dynamics of the ac Stark effect is investigated by degenerate pump-probe experiments, by exciting the quantum well excitons at various intensities and ...
2000Is light absorption by excitons in quantum wells an intrinsic process?
Benoît Marie Joseph Deveaud, Ursula Oesterle, Cristiano Ciuti
A novel method of controlling light absorption by exciton-polaritons is presented. The coherent light-induced coupling of excitons in multiple quantum well Bragg structures is exploited to sup press dramatically the absorption. Our results show that excito ...
2000