Impact of lateral carrier confinement on electro-optical tuning properties of polariton condensates

Brodbeck, Sebastian; Suchomel, Holger; Amthor, M.; Wolf, A.; Kamp, M.; Schneider, Christian; Höfling, Sven

doi:10.1063/1.4927601

Cited by 7 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the QWs are located in the intrinsic region, moderate applied voltages of a few hundred mV should suffice to shift the QW exciton emission up to several meV. It is interesting to note that, while the QCSE has been studied for excitonpolaritons in the linear regime [82][83][84], certain peculiarities related to phonon enhanced tunneling effects between nearby QWs and carrier screening were observed recently [85,86]. Under specific circumstances, in particular if diffusion of the reservoir is restricted, these effects indeed lead to a blueshift of the polariton resonance in the presence of the electric field, which may present a complication for the realization of electrostatic polariton traps.…”

Section: Electrostatic Trapsmentioning

confidence: 99%

Exciton-polariton trapping and potential landscape engineering

et al. 2016

View full text Add to dashboard Cite

Exciton-polaritons in semiconductor microcavities have become a model system for the studies of dynamical Bose-Einstein condensation, macroscopic coherence, many-body effects, nonclassical states of light and matter, and possibly quantum phase transitions in a solid state. These low-mass bosonic quasiparticles can condense at comparatively high temperatures up to 300 K, and preserve the fundamental properties of the condensate, such as coherence in space and time domain, even when they are out of equilibrium with the environment. Although the presence of a confining potential is not strictly necessary in order to observe Bose-Einstein condensation, engineering of the polariton confinement is a key to controlling, shaping, and directing the flow of polaritons. Prototype polariton-based optoelectronic devices rely on ultrafast photon-like velocities and strong nonlinearities exhibited by polaritons, as well as on their tailored confinement. Nanotechnology provides several pathways to achieving polariton confinement, and the specific features and advantages of different methods are discussed in this review. Being hybrid exciton-photon quasiparticles, polaritons can be trapped via their excitonic as well as photonic component, which leads to a wide choice of highly complementary trapping techniques. Here, we highlight the almost free choice of the confinement strengths and trapping geometries that provide powerful means for control and manipulation of the polariton systems both in the semi-classical and quantum regimes. Furthermore, the possibilities to observe effects of the polariton blockade, Mott insulator physics, and population of higher-order energy bands in sophisticated lattice potentials are discussed. Observation of such effects could lead to realization of novel polaritonic non-classical light sources and quantum simulators.

show abstract

Section: Electrostatic Trapsmentioning

confidence: 99%

Exciton-polariton trapping and potential landscape engineering

et al. 2016

View full text Add to dashboard Cite

show abstract

“…We attribute this behavior to the quantum confined Stark effect, , which induces a red shift in the emission spectrum of a QW caused by an external electric field. Due to the excitonic component of polaritons, these particles’ emission energy is also effected when applying an electrical field. , A power series measurement is performed to show that polariton lasing is still present at an applied reverse bias voltage of −5 V. Details can be found in Supporting Information section 3. Here we experimentally show the possibility to influence the condensation conditions of our sample and are therefore able to switch the lasing from the topological to a trivial mode, depending on the applied voltage.…”

Section: Resultsmentioning

confidence: 99%

Electro-optical Switching of a Topological Polariton Laser

et al. 2022

View full text Add to dashboard Cite

Implementing concepts of topological protection in photonics has proved to be an exciting new degree of freedom for the realization of photonic devices. In this work, we are using arrays of coupled microresonators to realize exciton-polariton lasing from a topological domain boundary defect in an orbital Su− Schrieffer−Heeger geometry. By implementing adequate doping levels and the application of a bias voltage, we show that we can use the quantum confined Stark effect to control the condensation of polaritons in the topological mode. Specifically, we demonstrate that we can influence the polariton condensation behavior such that we can switch lasing from the topological defect to a trivial mode. We believe that successfully triggering the crossover from the topologically protected to the trivial regime of a nonlinear Bosonic condensate via eletro-optical methods paves the way toward ultrafast, topologically protected photonic switches, possibly down to the single photon level. Furthermore, we anticipate that a periodic electro-optical modulation can establish a new degree of freedom to tailor the optical properties of topologically protected polariton condensates.

show abstract

“…As we know, an electric field has an important effect on the energy of excitons, specifically, it can reduce the overlap of electron and hole wavefunctions in quantum wells, which leads to the reduced vacuum Rabi splitting between excitons and photons. Recent experiments have shown the influence of an electric field on the energy of EPs [28,29]. Additionally, it is found that an external electric field can be used to directly control the spin of an EP condensate and emission polarization [30].…”

Section: Model and Formulation 21 A Possible Experimental Methodsmentioning

confidence: 99%

Rotation of exciton-polariton condensates with TE-TM splitting in a microcavity ring

Zhang

Jin

2017

New J. Phys.

View full text Add to dashboard Cite

We investigate exciton-polariton condensates with a rotating potential induced by an electric field in a semiconductor microcavity ring. In the absence of transverse-electric-transverse-magnetic (TE-TM) splitting, we find that there is a critical laser pump rate, above which the quantized phase slips appear with hysteresis, and there exist quantized average angular momenta at fixed angular velocities, regardless of the pump rate. When considering the TE-TM splitting, we find that there are a series of hysteresis loops with the same intervals which are modulated by the magnitude of the splitting for a linear polarization laser. Further, multistability occurs at large pump rate, and there arises a phase slip for only one spin with large absolute value of the polarization degree, owing to the competition of the TE-TM splitting and energy induced by rotation. These results can be verified experimentally with current technology, and are useful for future electro-optic devices.

show abstract

Impact of lateral carrier confinement on electro-optical tuning properties of polariton condensates

Abstract: Tunnel-assisted manipulation of intersubband polaritons in asymmetric coupled quantum wells Appl. Phys. Lett. 89, 171109 (2006); 10.1063/1.2367664Enhancement of the quantum-confined stark effect utilizing asymmetric quantum well structures Appl.

Cited by 7 publications

References 30 publications

Exciton-polariton trapping and potential landscape engineering

Exciton-polariton trapping and potential landscape engineering

Electro-optical Switching of a Topological Polariton Laser

Rotation of exciton-polariton condensates with TE-TM splitting in a microcavity ring

Contact Info

Product

Resources

About