Control of Elementary Excitations by Acoustic Fields

Exciton-polariton condensates in acoustic lattices

This project aims at the study and implementation of advanced concepts for optical devices by the periodic spatio-temporal modulation of microcavity-polariton condensates with lattices generated by surface acoustic waves (SAWs).


Quantum behavior in the macroscopic scale manifests when an ensemble of bosonic particles undergoes a phase transition to a macroscopic coherent phase (i.e. condensate) where the individual elements become indistinguishable and the ensemble can be described by a single quantum wavefunction. In the solid state, such transition may occur in semiconductor microcavities, where the strong coupling of photons and excitons gives rise to bosonic quasi-particles called polaritons. Polariton condensates exist under non-equilibrium and exhibit spontaneous symmetry breaking and extended spatial and temporal coherence, in a way similar to a condensate under thermal equilibrium formed by atoms, for example (i.e Bose-Einstein condensate (BEC)). In contrast to BECs, polariton condensates may exist at temperatures in the kelvin range. They also show strong nonlinear behavior at low particle densities. They are therefore very attractive for the implementation of advanced applications in quantum and classical optical processing and communication, such as entangled particle emission. 


Placing a condensate in a tunable periodical potential with period smaller than the size of the condensate has remarkable consequences, as demonstrated by experiments on atomic BECs in optical lattices. For example, the periodic modulation creates a lattice of mini-condensates while the potential tunability provides the control of the inter-site interactions required to explore effects associated with the Bose-Hubbard model and particle blockade. 


Our group at PDI has pioneered this field and demonstrated the formation of arrays of tunable one and two-dimensional polariton condensates where fragmentation, modification of the symmetry of the macroscopic wavefunction, enhancement of the nonlinearity and condensation in metastable states have been studied. These results open the way for the dynamic manipulation of polaritonic quantum phases by tunable periodic potentials necessary for computational schemes and for the investigation of many-body phenomena such as Josephson coupling and, for shorter SAW wavelengths, superfluid–Mott insulator transition.

Selected Publications

7 Author J. Buller , E. A. Cerda-Méndez , R. E. Balderas-Navarro , K. Biermann , P. V. Santos

Dynamical and Tuneable Modulation of Tamm-Plasmon/Exciton-Polariton Hybrid States using Surface Acoustic Waves

Source Acta Physica Polonica A , 129 , A-26 ( 2016 )
DOI : 10.12693/APhysPolA.129.A-26 | 2726 Cite : Bibtex RIS
J. Buller, E. A. Cerda-Méndez, R. E. Balderas-Navarro, K. Biermann, and P. V. Santos

6 Author M. Sich , F. Fras , J. K. Chana , M. S. Skolnick , D. N. Krizhanovskii , A. V. Gorbach , R. Hartley , D. V. Skryabin , S. S. Gavrilov , E. A. Cerda-Méndez , K. Biermann , R. Hey , P. V. Santos

Effects of Spin-Dependent Interactions on Polarization of Bright Polariton Solitons

Source Phys. Rev. Lett. , 112 , 046403 ( 2014 )
DOI : 10.1103/PhysRevLett.112.046403 | Download: PDF | 2529 Cite : Bibtex RIS
M. Sich, F. Fras, J. K. Chana, M. S. Skolnick, D. N. Krizhanovskii, A. V. Gorbach, R. Hartley, D. V. Skryabin, S. S. Gavrilov, E. A. Cerda-Méndez, K. Biermann, R. Hey, and P. V. Santos

5 Author E. A. Cerda-Méndez , D. Sarkar , D. N. Krizhanovskii , S. S. Gavrilov , K. Biermann , M. S. Skolnick , P. V. Santos

Exciton-Polariton Gap Solitons in Two-Dimensional Lattices

Source Phys. Rev. Lett. , 111 , 146401 ( 2013 )
DOI : 10.1103/PhysRevLett.111.146401 | Download: PDF | 2507 Cite : Bibtex RIS
E. A. Cerda-Méndez, D. Sarkar, D. N. Krizhanovskii, S. S. Gavrilov, K. Biermann, M. S. Skolnick, and P. V. Santos

4 Author D. N. Krizhanovskii , E. A. Cerda-Méndez , S. S. Gavrilov , D. Sarkar , K. Guda , R. Bradley , P. V. Santos , R. Hey , K. Biermann , M. Sich , F. Fras , M. S. Skolnick

Effect of polariton-polariton interactions on the excitation spectrum of a non-equilibrium condensate in a periodic potential

Source Phys. Rev. B , 87 , 155423 ( 2013 )
Download: PDF | 2392 Cite : Bibtex RIS
D. N. Krizhanovskii, E. A. Cerda-Méndez, S. S. Gavrilov, D. Sarkar, K. Guda, R. Bradley, P. V. Santos, R. Hey, K. Biermann, M. Sich, F. Fras, and M. S. Skolnick

3 Author M. Sich , D. N. Krizhanovskii , M. S. Skolnick , A. V. Gorbach , R. Hartley , D. V. Skryabin , E. A. Cerda-Méndez , K. Biermann , R. Hey , P. V. Santos

Observation of bright polariton solitons in a semiconductor microcavity

Source Nature Photon. , 6 , 50 ( 2012 )
2287 Cite : Bibtex RIS
M. Sich, D. N. Krizhanovskii, M. S. Skolnick, A. V. Gorbach, R. Hartley, D. V. Skryabin, E. A. Cerda-Méndez, K. Biermann, R. Hey, and P. V. Santos

2 Author E. A. Cerda-Méndez , D. N. Krizhanovskii , M. Wouters , R. Bradley , K. Biermann , K. Guda , R. Hey , P. V. Santos , D. Sakar , M. S. Skolnick

Polariton condensation in dynamic acoustic lattices

Source Phys. Rev. Lett. , 105 , 116402 ( 2010 )
Download: PDF | 2064 Cite : Bibtex RIS
E. A. Cerda-Méndez, D. N. Krizhanovskii, M. Wouters, R. Bradley, K. Biermann, K. Guda, R. Hey, P. V. Santos, D. Sakar, and M. S. Skolnick

1 Author M. M. de Lima Jr. , M. van der Poel , P. V. Santos , J. M. Hvam

Phonon-induced polariton superlattices

Source Phys. Rev. Lett. , 97 , 045501 ( 2006 )
Download: PDF | 1656 Cite : Bibtex RIS
M. M. de Lima Jr., M. van der Poel, P. V. Santos, and J. M. Hvam


Dr. Paulo V. Santos

Senior Scientist

+49 30 20377-221

lab: -360, -340, -343