Publications by Marcia Portella Oberli

Localized Photon Lasing in a Polaritonic Lattice Landscape

Daniel Oberli, Marcia Portella Oberli, Fauzia Jabeen, Morteza Navadeh Toupchi

Periodic photonic structures have attracted much interest due to their versatility for controlling light propagation. The dispersion of photon modes in photonic lattices exhibits an energy band structure analo-gous to the electronic one in crystals. An imp ...

American Physical Society (APS)2020

Anderson localisation in steady states of microcavity polaritons

Daniel Oberli, Marcia Portella Oberli, Fauzia Jabeen, Albert Adiyatullin, Mitchell David Anderson, Morteza Navadeh Toupchi

We present an experimental signature of the Anderson localisation of microcavity polaritons, and provide a systematic study of the dependence on disorder strength. We reveal a controllable degree of localisation, as characterised by the inverse-participati ...

Springer Nature2019

Polaritonic Cross Feshbach Resonance

Daniel Oberli, Marcia Portella Oberli, Naotomo Takemura, Mitchell David Anderson, Morteza Navadeh Toupchi

We demonstrate the existence of a cross Feshbach resonance by strongly driving a lower polariton mode and by monitoring in time the transmission of a short optical pulse at the energy of the upper polariton mode in a semiconductor microcavity. From the sig ...

2019

Reservoir-induced decoherence of resonantly excited confined polaritons

Benoît Marie Joseph Deveaud, François Morier-Genoud, Daniel Oberli, Marcia Portella Oberli, Grégory Chilpéric Sallen, Claudéric Ouellet-Plamondon

We report on the effect of decoherence on polariton bistability. The polariton hysteresis loop is shown to collapse in a similar way when increasing the temperature or under nonresonant excitation power. The hysteresis upward threshold is pulled to lower e ...

Amer Physical Soc2017

Spatial multistability induced by cross interactions of confined polariton modes

Benoît Marie Joseph Deveaud, François Morier-Genoud, Daniel Oberli, Marcia Portella Oberli, Grégory Chilpéric Sallen, Claudéric Ouellet-Plamondon

We demonstrate the occurrence of spatial multistability using laterally confined microcavity exciton-polaritons. By coherently exciting with a blue detuned laser a series of confined polariton modes, we investigate the effects of multistability on the tran ...

Amer Physical Soc2016

Coherent and incoherent aspects of polariton dynamics in semiconductor microcavities

Benoît Marie Joseph Deveaud, Daniel Oberli, Marcia Portella Oberli, Naotomo Takemura, Mitchell David Anderson, Morteza Navadeh Toupchi, Souvik Biswas

The interaction between coherent polaritons and incoherent excitons plays an important role in polariton physics. Using resonant pump-probe spectroscopy with selective excitation of single polariton branches, we investigate the different dephasing mechanis ...

Amer Physical Soc2016

Effect of a noisy driving field on a bistable polariton system

Benoît Marie Joseph Deveaud, François Morier-Genoud, Marcia Portella Oberli, Hadis Abbaspour, Stéphane Trebaol, Grégory Chilpéric Sallen

We report on the effect of noise on the characteristics of the bistable polariton emission system. The present experiment provides a time-resolved access to the polariton emission intensity. We evidence the noise-induced transitions between the two stable ...

American Physical Society2015

Two-dimensional Fourier transform spectroscopy of exciton-polaritons and their interactions

Benoît Marie Joseph Deveaud, Daniel Oberli, Marcia Portella Oberli, Verena Kohnle, Stéphane Trebaol, Naotomo Takemura, Mitchell David Anderson

We investigate polariton-polariton interactions in a semiconductor microcavity through two-dimensional Fourier transform (2DFT) spectroscopy. We observe, in addition to the lower-lower and the upper-upper polariton self-interactions, a lower-upper cross in ...

American Physical Society2015

Temporally resolved second-order photon correlations of exciton-polariton Bose-Einstein condensate formation

Benoît Marie Joseph Deveaud, Marcia Portella Oberli, Hadis Abbaspour, Albert Adiyatullin, Mitchell David Anderson

Second-order time correlation measurements with a temporal resolution better than 3 ps were performed on a CdTe microcavity where spontaneous Bose-Einstein condensation is observed. After the laser pulse, the nonresonantly excited thermal polariton populat ...

American Institute of Physics2015

Dephasing effects on coherent exciton-polaritons and the breakdown of the strong coupling regime

Benoît Marie Joseph Deveaud, Daniel Oberli, Marcia Portella Oberli, Stéphane Trebaol, Naotomo Takemura, Mitchell David Anderson, Souvik Biswas

Using femtosecond pump-probe spectroscopy, we identify excitation-induced dephasing as a major mechanism responsible for the breakdown of the strong coupling between excitons and photons in a semiconductor microcavity. The effects of dephasing are observed ...

American Physical Society2015

Spinor stochastic resonance

Benoît Marie Joseph Deveaud, François Morier-Genoud, Marcia Portella Oberli, Hadis Abbaspour, Stéphane Trebaol

We report on noise-induced spin ordering in a collective quasiparticle system: spinor stochastic resonance. Synergetic interplay of a polarization-modulated signal and a polarization noise allows us to switch coherently between the two metastable states of ...

American Physical Society2015

Stochastic Resonance in Collective Exciton-Polariton Excitations inside a GaAs Microcavity

Benoît Marie Joseph Deveaud, François Morier-Genoud, Marcia Portella Oberli, Hadis Abbaspour, Stéphane Trebaol

We report the first observation of stochastic resonance in confined exciton polaritons. We evidence this phenomena by tracking the polaritons behavior through two stochastic resonance quantifiers namely the spectral magnification factor and the signal-to-n ...

American Physical Society2014

Nonlinear relaxation and selective polychromatic lasing of confined polaritons

Benoît Marie Joseph Deveaud, François Morier-Genoud, Marcia Portella Oberli, Gabriele Grosso, Stéphane Trebaol

Polaritons have often been proposed as promising candidates for the realization of all-optical devices due to the easy manipulation and control of their density and spin. In this paper we present a relaxation mechanism for confined polaritons and its appli ...

Amer Physical Soc2014

Heterodyne spectroscopy of polariton spinor interactions

Benoît Marie Joseph Deveaud, Marcia Portella Oberli, Stéphane Trebaol, Naotomo Takemura

We report on spinor polariton interactions in GaAs based microcavities. This investigation is carried out by means of heterodyne polarized pump-probe spectroscopy. We show the dependence of the energy renormalization of the lower and upper polariton resona ...

American Physical Society2014

Polaritonic Feshbach resonance

Benoît Marie Joseph Deveaud, Marcia Portella Oberli, Stéphane Trebaol, Naotomo Takemura

A Feshbach resonance occurs when the energy of two interacting free particles comes into resonance with a molecular bound state. When approaching this resonance, marked changes in the interaction strength between the particles can arise. Feshbach resonance ...

Nature Publishing Group2014

Ultrafast tristable spin memory of a coherent polariton gas

Benoît Marie Joseph Deveaud, François Morier-Genoud, Taofiq Paraïso, Marcia Portella Oberli, Roland Cerna

Non-linear interactions in coherent gases are not only at the origin of bright and dark solitons and superfluids; they also give rise to phenomena such as multistability, which hold great promise for the development of advanced photonic and spintronic devi ...

Nature Publishing Group2013

Influence of a nonradiative reservoir on polariton spin multistability

Benoît Marie Joseph Deveaud, François Morier-Genoud, Taofiq Paraïso, Marcia Portella Oberli, Roland Cerna

In this work, we study the influence of the excitation conditions on power-dependent spin switching and spin multistability of exciton polaritons in planar semiconductor microcavities. We obtain experimental evidence for the influence of a reservoir of non ...

American Physical Society2013

Four-wave mixing excitations in a dissipative polariton quantum fluid

Benoît Marie Joseph Deveaud, Marcia Portella Oberli, Verena Kohnle

The Bogoliubov transformation of a polariton quantum fluid has recently been revealed in the four-wave mixing response of a driven microcavity polariton gas. In this work, we investigate the modifications that the dual nature of microcavity polaritons prod ...

American Physical Society2012

Collisional damping of dipole oscillations in a trapped polariton gas

Benoît Marie Joseph Deveaud, François Morier-Genoud, Taofiq Paraïso, Marcia Portella Oberli, Roland Cerna, Barbara Pietka

We study the relaxation dynamics of a trapped polariton gas in the nonlinear regime. We excite the three lowest energy states of the system and observe the time evolution of the polariton density in the momentum space. At a low excitation power, the dynami ...

2011

From Single Particle to Superfluid Excitations in a Dissipative Polariton Gas

Benoît Marie Joseph Deveaud, Marcia Portella Oberli, Verena Kohnle

Using an angle-resolved heterodyne four-wave-mixing technique, we probe the low momentum excitation spectrum of a coherent polariton gas. The experimental results are well captured by the Bogoliubov transformation which describes the transition from single ...

American Physical Society2011