Photonic Berry curvature in double liquid crystal microcavities with broken inversion symmetry

Kokhanchik, P.; Sigurðsson, H.; Piętka, B.; Szczytko, Jacek; Lagoudakis, Pavlos G.

doi:10.1103/physrevb.103.l081406

Cited by 19 publications

(8 citation statements)

References 40 publications

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“…The RD effect originating from the anisotropy of the LC microcavity splits the polariton condensate in both real and momentum space. Our work offers the possibility to study nontrivial band structures 39 based on polariton condensates in a CsPbBr 3 microcavity at room temperature and the influence of the RD spin-splitting on nonlinear phenomena, such as solitary waves, optical bistability or multistability, modulational instability, and vortices 32 , 40 .…”

Section: Discussionmentioning

confidence: 99%

Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature

Zhai

et al. 2022

Nat Commun

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Spin-orbit coupling plays an important role in the spin Hall effect and topological insulators. Bose-Einstein condensates with spin-orbit coupling show remarkable quantum phase transition. In this work we control an exciton polariton condensate – a macroscopically coherent state of hybrid light and matter excitations – by virtue of the Rashba-Dresselhaus (RD) spin-orbit coupling. This is achieved in a liquid-crystal filled microcavity where CsPbBr3 perovskite microplates act as the gain material at room temperature. Specifically, we realize an artificial gauge field acting on the CsPbBr3 exciton polariton condensate, splitting the condensate fractions with opposite spins in both momentum and real space. Besides the ground states, higher-order discrete polariton modes can also be split by the RD effect. Our work paves the way to manipulate exciton polariton condensates with a synthetic gauge field based on the RD spin-orbit coupling at room temperature.

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Section: Discussionmentioning

confidence: 99%

Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature

Zhai

et al. 2022

Nat Commun

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“…When two perpendicular cavity modes of opposite parity meet each other at

k = 0

, the RD SOI is induced, accompanied by a spin splitting, i.e.,

H_{RD} = - 2 α {\overset{σ}{true}}_{normalz} k_{normaly}

. The total Hamiltonian takes the explicit form

[ 20,24 ]

H (bold-italick) = (\begin{matrix} \frac{ℏ^{2} k_{x}^{2}}{2 m_{x}} + \frac{ℏ^{2} k_{y}^{2}}{2 m_{y}} - 2 α k_{y} & β_{0} + β_{1} k^{2} e^{2 i φ} \\ β_{0} + β_{1} k^{2} e^{- 2 i φ} & \frac{ℏ^{2} k_{x}^{2}}{2 m_{x}} + \frac{ℏ^{2} k_{y}^{2}}{2 m_{y}} + 2 α k_{y} \end{matrix})

where

m_{x}

(

m_{y}

) is the effective mass of cavity photons along

x

(

y

) direction, which are typically different in anisotropic media.

α

represents the strength of the linear splitting or RD effect when the Rashba and Dresselhaus coupling strengths are equal to each other, [ 25 ] contributing to only

k_{y}

direction in the in‐plane momentum (

k_{normalx}, k_{normaly}

) space.…”

Section: Resultsmentioning

confidence: 99%

Realization of Exciton‐Mediated Optical Spin‐Orbit Interaction in Organic Microcrystalline Resonators

Ren

Liao

et al. 2021

Laser & Photonics Reviews

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The ability to control the spin‐orbit interaction (SOI) of light in optical microresonators is of fundamental importance for future photonics. Organic microcrystals, due to their giant optical anisotropy, play a crucial role in spin‐optics and topological photonics. Here, the controllable and wavelength‐dependent Rashba–Dresselhaus (RD) SOI is realized that is attributed to the anisotropic excitonic response in an optical microcavity filled with an organic microcrystalline. This work investigates the transition of the spin‐splitting from twice winding caused by the splitting of the transverse‐electric and transverse‐magnetic modes to once winding caused by the RD effect. The interplay of the two allows engineer the SOI of light in organic microcavities, which besides its fundamental interest promises applications in spin‐controlled on‐chip integrated nanophotonic elements, toward exploiting nonmagnetic and low‐cost spin‐photonic devices.

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“…Studies leading to an understanding of non-linear phenomena including condensation and interbranch polariton scattering in multi-level polariton systems are essential from the point of view of the development of such domains as topological photonics [52,53] or polaritronics. [54] A high degree of tunability of the system should allow the study of various channels of energyand/or momentum degenerate polariton pair scattering under non-resonant pumping.…”

Section: Discussionmentioning

confidence: 99%

Polariton lasing and energy-degenerate parametric scattering in non-resonantly driven coupled planar microcavities

Sawicki¹,

Sturges²,

Ściesiek³

et al. 2021

Preprint

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Multi-level exciton-polariton systems offer an attractive platform for studies of non-linear optical phenomena. However, studies of such consequential non-linear phenomena as polariton condensation and lasing in planar microcavities have so far been limited to two-level systems, where the condensation takes place in the lowest attainable state. Here, we report non-equilibrium Bose-Einstein condensation of exciton-polaritons and low threshold, dual-wavelength polariton lasing in vertically coupled, double planar microcavities. Moreover, we find that the presence of the non-resonantly driven condensate triggers interbranch exciton-polariton transfer in the form of energy-degenerate parametric scattering. Such an effect has so far been observed only under excitation that is strictly resonant in terms of the energy and incidence angle. We describe theoretically our time-integrated and time-resolved photoluminescence investigations by a set of rate equations involving an opendissipative Gross-Pitaevskii equation. Our platform's inherent tunability is promising for construction of planar lattices, enabling three-dimensional polariton hopping and realization of photonic devices, such as two-qubit polariton-based logic gates.

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Photonic Berry curvature in double liquid crystal microcavities with broken inversion symmetry

Cited by 19 publications

References 40 publications

Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature

Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature

Realization of Exciton‐Mediated Optical Spin‐Orbit Interaction in Organic Microcrystalline Resonators

Polariton lasing and energy-degenerate parametric scattering in non-resonantly driven coupled planar microcavities

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