Spatial multistability induced by cross interactions of confined polariton modes

Ouellet-Plamondon, C.; Sallen, Gregory; Morier‐Genoud, F.; Oberli, D. Y.; Portella‐Oberli, M. T.; Deveaud, B.

doi:10.1103/physrevb.93.085313

Cited by 13 publications

(13 citation statements)

References 69 publications

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“…The last term represents the interphoton interaction which conserves the total angular momentum. Physical implementation.-While our proposal can be applied to a variety of photonic systems where photons follow a circular path inside a cavity, such as excitonpolariton micropillars [19], circuit QED setups [20], or surface plasmons [21], in the following we focus on a specific implementation scheme based on an array of silicon microring resonators [22].…”

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confidence: 99%

Synthetic Dimensions with Magnetic Fields and Local Interactions in Photonic Lattices

Ozawa

Carusotto

2017

Phys. Rev. Lett.

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We discuss how one can realize a photonic device that combines synthetic dimensions and synthetic magnetic fields with spatially local interactions. Using an array of ring cavities, the angular coordinate around each cavity spans the synthetic dimension. The synthetic magnetic field arises as the intercavity photon hopping is associated with a change of angular momentum. Photon-photon interactions are local in the periodic angular coordinate around each cavity. Experimentally observable consequences of the synthetic magnetic field and of the local interactions are pointed out.

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confidence: 99%

Synthetic Dimensions with Magnetic Fields and Local Interactions in Photonic Lattices

Ozawa

Carusotto

2017

Phys. Rev. Lett.

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“…Usually this effect is observed in a configuration where the polariton field is frozen in a single mode. When, as in the present situation, multi-mode polariton fluids are considered, the complex spatial dynamics is expected to give rise to conceptually different bistability or even multistability effects [34][35][36]. As a first example, we notice that the abrupt change in soliton number occurs at different excitation powers when the power is scanned downward than when the power is ramped up [24]: two different soliton patterns can thus be observed for the same excitation power.…”

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confidence: 99%

Phase-Controlled Bistability of a Dark Soliton Train in a Polariton Fluid

et al. 2016

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We use a one-dimensional polariton fluid in a semiconductor microcavity to explore the rich nonlinear dynamics of counter-propagating interacting Bose fluids. The intrinsically driven-dissipative nature of the polariton fluid allows to use resonant pumping to impose a phase twist across the fluid. When the polariton-polariton interaction energy becomes comparable to the kinetic energy, linear interference fringes transform into a train of solitons. A novel type of bistable behavior controlled by the phase twist across the fluid is experimentally evidenced.Dark solitons are among the fundamental nonlinear collective excitations of one-dimensional (1D) quantum degenerate fluids with positive mass and repulsive interactions. They are characterized by a dip in a uniform background density and a jump in the macroscopic phase across it. The shape and size of the dip is given by the interplay of mass and nonlinearity. Because of the universality of the mechanisms necessary to their formation, dark solitons have been observed in a wide variety of systems ranging from Bose-Einstein condensates of cold atoms [1][2][3], optical fibers [4], to thin magnetic films [5]. Interestingly, dark solitons have also been observed in nonlinear open-dissipative systems, in particular, in semiconductor microcavities [6][7][8][9] and are attracting great interest in view of photonic applications [10].Semiconductor microcavities have recently appeared as an excellent platform to study the nonlinear dynamics of interacting Bose fluids in a photonic context [11]. Their elementary excitations are exciton-polaritons, bosonic quasiparticles arising from the strong coupling between quantum well excitons and photons confined in the microcavity. While their excitonic component provides significant repulsive interactions, the fast escape of photons out of the microcavity makes polaritons an intrinsically open-dissipative system, requiring continuous wave pumping to achieve a steady state. A number of quantum fluid effects have been studied in semiconductor microcavities, including superfluidity [12], diffusive Goldstone modes [13], Bogoliubov excitation spectrum [14], solitary bright waves [15,16], and the hydrodynamic nucleation of quantized vortices [17,18] and dark solitons [7,8].In addition to the possibility of in-situ and timeresolved imaging of the fluid dynamics, a remarkable feature of driven-dissipative systems is that a resonant drive allows setting the local phase of the wavefunction [11]. It is then possible to externally manipulate the boundary conditions and impose a controlled phase pattern across a polariton fluid. This was first explored in a two-dimensional polariton condensate in which a spatial vortex phase profile was imposed on the polariton field, resulting in persistent currents with high orbital momentum [19]. This technique opens up a new world for the exploration of the elementary excitations of polariton quantum fluids. In particular, it has been proposed that by imposing a phase twist across the fluid via the external...

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“…Most recently, similar spatial multi-stability behaviour has been experimentally observed in laterally confined microcavity exciton-polaritons 28 . Unlike single-mode polariton soliton solutions previously found in planar semiconductor microcavities that are stable within the bistability domain, the multimode solitons exhibit more complex multi-stable behaviour.…”

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confidence: 63%

Coupled spatial multimode solitons in microcavity wires

2016

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A modal expansion approach is developed and employed to investigate and elucidate the nonlinear mechanism behind the multistability and formation of coupled multi-mode polariton solitons in microcavity wires. With pump switched on and realistic dissipation parameters, truncating the expansion up to the second-order wire mode, our model predicts two distinct coupled soliton branches: stable and ustable. Modulational stability of the homogeneous solution and soliton branches stability are studied. Our simplified 1D model is in remarkably good agreement with the full 2D mean-field Gross-Pitaevskii model, reproducing correctly the soliton existence domain upon variation of pump amplitude and the onset of multistability.

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Spatial multistability induced by cross interactions of confined polariton modes

Cited by 13 publications

References 69 publications

Synthetic Dimensions with Magnetic Fields and Local Interactions in Photonic Lattices

Synthetic Dimensions with Magnetic Fields and Local Interactions in Photonic Lattices

Phase-Controlled Bistability of a Dark Soliton Train in a Polariton Fluid

Coupled spatial multimode solitons in microcavity wires

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