Optically induced splitting of bright excitonic states in coupled quantum microcavities

Armitage, A.; Skolnick, M. S.; Astratov, Vasily N.; Whittaker, D. M.; Panzarini, G.; Andreani, Lucio Claudio; Fisher, T. A.; Roberts, J.S.; Kavokin, Alexey; Kaliteevski, M. A.; Vladimirova, Maria

doi:10.1103/physrevb.57.14877

Cited by 64 publications

(39 citation statements)

References 23 publications

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“…According to the measurement results, anti-crossing between UP and MP2 occurs at around 15 o with a vacuum Rabi splitting Ω R1 of 1.11 eV, while anti-crossing between MP1 and LP occurs at around 40 o with a vacuum Rabi splitting Ω R2 of 1.08 eV. The anti-crossing occurs at different angles (different wave vector k), which is consistent with the observation by Armitage et al for the strongly coupled inorganic MCs, and this is due to the splitting between symmetric and antisymmetric cavity modes 6 . However, the inequality of these two splittings is inconsistent with the prediction of the classical fouroscillator coupled model proposed by Armitage et al for the strong coupling regime.…”

Section: B Coupled Organic Microcavitysupporting

confidence: 80%

“…Second, the exciton states in the two separate cavities also form symmetric and antisymmetric combinations (ψ S , ψ AS ) given as ψ S = (φ 1 + φ 2 )/2 and ψ AS = (φ 1 − φ 2 )/2, where φ 1 and φ 2 are the single exciton wave functions in the two cavities 6,37 .…”

Section: Modified Four-oscillator Coupled Model For Coupled Omcsmentioning

confidence: 99%

“…Quantum well based coupled inorganic microcavites (MCs) have been well studied for theory and optical devices [4][5][6][7][8][9][10][11] . Cavity polariton-induced splitting of excitonic states and optical reflection asymmetry were reported by Armitage et al in quantum well based coupled inorganic MCs 6,7 . Some researchers analyzed the polariton-polariton interaction potentials using pump-probe degenerate scattering 9 .…”

Section: Introductionmentioning

confidence: 99%

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Coupling of exciton-polaritons inlow−Qcoupled microcavities beyond the rotating wave approximation

et al. 2015

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We have demonstrated coupling between a pair of ultrastrong light-matter coupled microcavities composed of neat glassy organic dye films between metallic (silver) mirrors at room temperature. Based upon our modified coupled oscillator model, we have observed that the degeneracy between the Rabi splittings associated with the symmetric and antisymmetric cavity modes is broken by the higher-order anti-resonant terms in the Hamiltonian associated with the breakdown of the rotating wave approximation in the ultrastrong coupling regime. These results are in quantitative agreement with both experiment and transfer matrix modeling. The component cavities are characterized by Q factors around 12 and display a large vacuum Rabi splitting around 1.12 eV between the upper and lower polariton branches, which is about 52% of the excited state energy, thus indicating ultrastrong coupling in each individual cavity. This large splitting is due to the large oscillator strength of the neat dye glass. We have also observed large polariton-induced incidence-side asymmetry in reflection spectra in a coupled cavity pair with one cavity having no exciton.

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Section: B Coupled Organic Microcavitysupporting

confidence: 80%

Section: Modified Four-oscillator Coupled Model For Coupled Omcsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Coupling of exciton-polaritons inlow−Qcoupled microcavities beyond the rotating wave approximation

et al. 2015

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“…1,2 Alternative configurations of photonic molecules exist such as square-shaped photonic dots coupled via a semiconductor bridge; 1 coupled defects in photonic crystal membranes; 3 whispering-gallery microdisks coupled via a small air gap; 4 and planar Fabry-Perot cavities coupled through a partially transparent distributed Bragg reflector (DBR). 5 More complicated structures such as photonic graphene have been developed where a honeycomb lattice of coupled micropillars displays polariton dispersions which are analogous to the electronic bandstructure of its chemical counterpart. 6 Coupled micropillars have found applications in the development of ultrabright entangled photon sources 7 along with Josephson oscillations between two linked polariton condensates.…”

mentioning

confidence: 99%

Tunable polaritonic molecules in an open microcavity system

Dufferwiel

Feng

Trichet

et al. 2015

Applied Physics Letters

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We experimentally demonstrate tunable coupled cavities based upon open access zero-dimensional hemispherical microcavities. The modes of the photonic molecules are strongly coupled with quantum well excitons forming a system of tunable polaritonic molecules. The cavity-cavity coupling strength, which is determined by the degree of modal overlap, is controlled through the fabricated centre-to-centre distance and tuned in-situ through manipulation of both the exciton-photon and cavity-cavity detunings by using nanopositioners to vary the mirror separation and angle between them. We demonstrate micron sized confinement combined with high photonic Q-factors of 31 000 and lower polariton linewidths of 150 μeV at resonance along with cavity-cavity coupling strengths between 2.5 meV and 60 μeV for the ground cavity state.

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“…In addition the PI [VA] had an extensive experience in studies of photonic crystal waveguides [29][30][31][32][33][34] and semiconductor microcavities [35][36][37][38] . This experience quite naturally led the PI and co-PIs to the idea of using dielectic microspheres with 3-20μm sizes as building blocks of more complicated coupled cavity structures.…”

Section: Statement Of the Problem Studiedmentioning

confidence: 99%

Resonant optical circuits based on coupling between whispering gallery modes in dielectric microresonators

Astratov

Franchak

Ashili

et al. 2004

Conference on Lasers and Electro-Optics/International Quantum Electronics Conference and Photonic Applications Systems Technolo

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. The project was devoted to advancing understanding of the optical properties of mesoscopic systems of coupled spherical cavities. Using numerical modeling, we studied optical coupling between spherical cavities with detuned whispering gallery mode (WGMs) resonances. The results were found to be in agreement with experiments performed on size-mismatched bispheres with controllable inter-cavity gaps. We observed new type of optical modes, termed "nanojet-induced modes", in straight chains of microspheres. Due to subwavelength sizes of the periodically focused spots and small propagation losses (<0.1dB/sphere) these modes were shown to be very promising for developing novel devices. The 3D lattices of closely Resonant Optical Circuits Based on Coupling Between Whispering Gallery Modes in Dielectric MicroresonatorsReport Title ABSTRACTThe project was devoted to advancing understanding of the optical properties of mesoscopic systems of coupled spherical cavities. Using numerical modeling, we studied optical coupling between spherical cavities with detuned whispering gallery mode (WGMs) resonances. The results were found to be in agreement with experiments performed on size-mismatched bispheres with controllable inter-cavity gaps. We observed new type of optical modes, termed "nanojet-induced modes", in straight chains of microspheres. Due to subwavelength sizes of the periodically focused spots and small propagation losses (<0.1dB/sphere) these modes were shown to be very promising for developing novel devices. The 3D lattices of closely packed spherical cavities were synthesized by flow-assisted self-assembly with the thickness well controllable up to 100 monolayers. By analogy with the percolation theory we argued that by selecting more uniform spheres it should be possible to achieve an optical percolation threshold for WGM-related transport in such systems. Along with dielectric microspheres we studied GaAs/AlGaAs pillar microcavities where we observed WGMs with Q-factors up to 20000 and small modal volumes. The results of this project are important for developing microprobes for biochemical sensing with subwavelength spatial resolution, reconfigurable filters, sensors and single photon sources.

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Optically induced splitting of bright excitonic states in coupled quantum microcavities

Cited by 64 publications

References 23 publications

Coupling of exciton-polaritons inlow−Qcoupled microcavities beyond the rotating wave approximation

Coupling of exciton-polaritons inlow−Qcoupled microcavities beyond the rotating wave approximation

Tunable polaritonic molecules in an open microcavity system

Resonant optical circuits based on coupling between whispering gallery modes in dielectric microresonators

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