Spontaneous Formation of Time-Periodic Vortex Cluster in Nonlinear Fluids of Light

Kirill, Sitnik,; Alyatkin, Sergey; Töpfer, Julian D.; Gnusov, Ivan; Cookson, Tamsin; Sigurðsson, H.; Lagoudakis, Pavlos G.

doi:10.1103/physrevlett.128.237402

Cited by 14 publications

(3 citation statements)

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“…The impurity potential [ 39 , 43 ] is

, with the strength

. The

in Equation ( 1 ) and

in Equation (2) are the incoherent pumping rates on the condensate and reservoir [ 44 ], respectively. The parameters

, and R have been rescaled into the one-dimensional case by the width d of the nanowire thickness, i.e.,

.…”

Section: The Theoretical Model and Lagrangian Approachmentioning

confidence: 99%

“…[ 40 ], we insert Equation ( 5 ) into Equation ( 3 ), and rewrite Equation ( 3 ) as

Here, we model

as a spatially modulated Gaussian function with the power

and width

, i.e.,

; the parameters

and

are referred to as the polariton loss rate and the gain saturation, respectively. In deriving Equation ( 6 ), the incoherent pumping of

is adjusted to be

within the current experimental capability [ 44 , 45 , 46 ]. Below, we investigate the interaction between a bright soliton and the impurity as captured by the

term in Equation ( 6 ).…”

Section: The Theoretical Model and Lagrangian Approachmentioning

confidence: 99%

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Interaction between an Impurity and Nonlinear Excitations in a Polariton Condensate

Chun-yu

Liang

2022

Entropy

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Exploring the dynamics of a mobile impurity immersed in field excitations is challenging, as it requires to account for the entanglement between the impurity and the surrounding excitations. To this end, the impurity’s effective mass has to be considered as finite, rather than infinite. Here, we theoretically investigate the interaction between a finite-mass impurity and a dissipative soliton representing nonlinear excitations in the polariton Bose–Einstein condensate (BEC). Using the Lagrange variational method and the open-dissipative Gross–Pitaevskii equation, we analytically derive the interaction phase diagram between the impurity and a dissipative bright soliton in the polariton BEC. Depending on the impurity mass, we find the dissipative soliton colliding with the impurity can transmit through, get trapped, or be reflected. This work opens a new perspective in understanding the impurity dynamics when immersed in field excitations, as well as potential applications in information processing with polariton solitons.

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“…The impurity potential [ 39 , 43 ] is

, with the strength

. The

in Equation ( 1 ) and

in Equation (2) are the incoherent pumping rates on the condensate and reservoir [ 44 ], respectively. The parameters

, and R have been rescaled into the one-dimensional case by the width d of the nanowire thickness, i.e.,

.…”

Section: The Theoretical Model and Lagrangian Approachmentioning

confidence: 99%

“…[ 40 ], we insert Equation ( 5 ) into Equation ( 3 ), and rewrite Equation ( 3 ) as

Here, we model

as a spatially modulated Gaussian function with the power

and width

, i.e.,

; the parameters

and

are referred to as the polariton loss rate and the gain saturation, respectively. In deriving Equation ( 6 ), the incoherent pumping of

is adjusted to be

within the current experimental capability [ 44 , 45 , 46 ]. Below, we investigate the interaction between a bright soliton and the impurity as captured by the

term in Equation ( 6 ).…”

Section: The Theoretical Model and Lagrangian Approachmentioning

confidence: 99%

Interaction between an Impurity and Nonlinear Excitations in a Polariton Condensate

Chun-yu

Liang

2022

Entropy

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“…Polariton vortices stand out as the most striking examples of polariton condensate states possessing nonzero OAM. The spontaneous emergence of polariton vortices, manifesting as vortex-antivortex pairs and clusters, has been the subject of thorough investigation 24 – 26 . Another research focus is on the deliberate generation of vortices with predefined OAM, effectively controlling the direction and distribution of polariton flow density.…”

Section: Introductionmentioning

confidence: 99%

Stochastic circular persistent currents of exciton polaritons

Barrat,

Cherbunin,

Sedov

et al. 2024

Sci Rep

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We monitor the orbital degree of freedom of exciton-polariton condensates confined within an optical trap and unveil the stochastic switching of persistent annular polariton currents under pulse-periodic excitation. Within an elliptical trap, the low-lying in energy polariton current states manifest as a two-petaled density distribution with a swirling phase. In the stochastic regime, the density distribution, averaged over multiple excitation pulses, becomes homogenized in the azimuthal direction. Meanwhile, the weighted phase, extracted from interference experiments, exhibits two compensatory jumps when varied around the center of the trap. Introducing a supplemental control optical pulse to break the reciprocity of the system enables the transition from a stochastic to a deterministic regime, allowing for controlled polariton circulation direction.

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