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Gain-dissipative systems of various physical origin have recently shown the ability to act as analogue minimisers of hard combinatorial optimisation problems. Whether or not these proposals will lead to any advantage in performance over the…

Mesoscale and Nanoscale Physics · Physics 2020-03-23 Kirill P. Kalinin , Alberto Amo , Jacqueline Bloch , Natalia G. Berloff

We study the magneto-photoluminescence of an optically trapped exciton-polariton condensate in a planar semiconductor microcavity with multiple In0.08Ga0.92As quantum wells. Extremely high condensate coherence time and continuous control…

Mesoscale and Nanoscale Physics · Physics 2024-08-14 Krzysztof Sawicki , Dmitriy Dovzhenko , Yuan Wang , Helgi Sigurðsson , Pavlos G. Lagoudakis

We report on experimental observation of next-nearest-neighbour coupling between ballistically expanding spinor exciton-polariton condensates in a planar semiconductor microcavity. All-optical control over the coupling strength between…

Mesoscale and Nanoscale Physics · Physics 2024-08-05 Dmitriy Dovzhenko , Denis Aristov , Lucy Pickup , Helgi Sigurdsson , Pavlos G. Lagoudakis

We demonstrate theoretically that the interaction of two degenerate condensates of exciton-polaritons in microcavities leads to polarization dependent parametric oscillations. The resonant polariton-polariton scattering is governed by the…

Mesoscale and Nanoscale Physics · Physics 2011-01-13 T C H Liew , A V Kavokin , I A Shelykh

We report spin and intensity coupling of an exciton-polariton condensate to the mechanical vibrations of a circular membrane microcavity. We optically drive the microcavity resonator at the lowest mechanical resonance frequency while…

Mesoscale and Nanoscale Physics · Physics 2018-02-16 O. Be'er , H. Ohadi , Y. del Valle-Inclan Redondo , A. J. Ramsay , S. I. Tsintzos , Z. Hatzopoulos , P. G. Savvidis , J. J. Baumberg

Equilibrium Bose-Einstein condensation of exciton-polaritons, demonstrated with a long-lifetime microcavity [Phys. Rev. Lett. 118, 016602 (2017)], has proven that driven-dissipative systems can undergo thermodynamic phase transitions in the…

Cavity exciton-polaritons (polaritons) are bosonic quasi-particles offering a unique solid-state system to investigate interacting condensates. Up to now, disorder induced localization and short lifetimes have prevented the establishment of…

We demonstrate that the synchronization of a lattice of solid-state condensates when inter-site tunnelling is switched on, depends strongly on the weak local disorder. This finding is vital for implementation of condensate arrays as…

Optical feedback is a well-known method of controlling laser dynamics, which has been widely studied in photonic systems to induce complex behaviors such as chaos or enhanced coherence. However, its application to systems in the strong…

Optics · Physics 2025-07-29 R. Mirek , M. Furman , A. Opala , M. Król , W. Pacuski , J. Szczytko , H. Sigurðsson , B. Piętka

The Letter is devoted to new frequencies generation and its role in the synchronization of two spatially separated polariton condensates affected by the coherent pump with the frequency detuned from the frequencies of the condensates. We…

Optics · Physics 2025-12-11 Alexey V Yulin

We propose a method to enhance the spatial coupling between ballistic exciton-polariton condensates in a semiconductor microcavity based on available spatial light modulator technologies. Our method, verified by numerically solving a…

Quantum Gases · Physics 2022-12-28 Yuan Wang , Pavlos G. Lagoudakis , Helgi Sigurdsson

Concentric ring exciton polariton condensates emerging under non-resonant laser pump in an annular trapping potential support persistent circular currents of polaritons. The trapping potential is formed by a cylindrical micropillar etched…

Mesoscale and Nanoscale Physics · Physics 2024-03-07 Vladimir Lukoshkin , Evgeny Sedov , Vladimir Kalevich , Z. Hatzopoulos , P. G. Savvidis , Alexey Kavokin

There is a growing interest in investigating new states of matter using out-of-equilibrium lattice spin models in two dimensions. However, a control of pairwise interactions in such systems has been elusive as due to their nonequilibrium…

Mesoscale and Nanoscale Physics · Physics 2019-06-10 Kirill P. Kalinin , Natalia G. Berloff

We report multistate optical switching among high-order bouncing-ball modes ("ripples") and whispering-gallerying modes ("petals") of exciton-polariton condensates in a laser-generated annular trap. By tailoring the diameter and power of…

Mesoscale and Nanoscale Physics · Physics 2018-01-31 Yongbao Sun , Yoseob Yoon , Saeed Khan , Li Ge , Loren N. Pfeiffer , Ken West , Hakan E. Tureci , David W. Snoke , Keith A. Nelson

We demonstrate spin polarized jets in extended systems of ballistic exciton-polariton condensates in semiconductor microcavities using optical non-resonant excitation geometries. The structure of the spin jets is determined by the digitally…

Mesoscale and Nanoscale Physics · Physics 2021-04-21 Lucinda Pickup , Julian D. Töpfer , Helgi Sigurdsson , Pavlos G. Lagoudakis

Superfluids under specific conditions can exhibit spontaneous breaking of continuous translation symmetries and form exotic spatially ordered states of matter known as supersolids. Despite its early theoretical prediction, it took over…

Mesoscale and Nanoscale Physics · Physics 2025-07-22 P. N. Kozhevin , A. D. Liubomirov , R. V. Cherbunin , M. A. Chukeev , I. Yu. Chestnov , A. V. Kavokin , A. V. Nalitov

We explore formation and dynamics of nonequilibrium bosonic exciton-polariton condensates in annular optically induced traps. For the vicinity of condensation pumping threshold, we develop the two-mode model, accounting for counter-rotating…

Quantum Gases · Physics 2024-02-08 I. Chestnov , E. Cherotchenko , A. Nalitov

We demonstrate, both experimentally and theoretically, a new phenomenon: the presence of dissipative coupling in the system of driven bosons. This is evidenced for a particular case of externally excited spots of exciton-polariton…

Other Condensed Matter · Physics 2017-09-25 H. Ohadi , R. L. Gregory , T. Freegarde , Y. G. Rubo , A. V. Kavokin , P. G. Lagoudakis

The interaction between a particle's spin and momentum -- known as spin-orbit (SO) coupling -- is the cornerstone of modern spintronics. In Bose-Einsten condensates of ultracold atoms, SO coupling can be implemented and precisely controlled…

Mesoscale and Nanoscale Physics · Physics 2026-03-17 Valeria A. Maslova , Nina S. Voronova

Photonic and polaritonic lattices have been recently theoretically proposed and experimentally realised as many-body simulators due to the rich behaviors exhibited by such systems at the macroscale. We show that the networks of polariton…

Mesoscale and Nanoscale Physics · Physics 2020-01-01 Kirill P. Kalinin , Natalia G. Berloff