Search Results - "Töpfer, Julian D"

Realizing the classical XY Hamiltonian in polariton simulators by Berloff, Natalia G., Silva, Matteo, Kalinin, Kirill, Askitopoulos, Alexis, Töpfer, Julian D., Cilibrizzi, Pasquale, Langbein, Wolfgang, Lagoudakis, Pavlos G.

“…The vast majority of real-life optimization problems with a large number of degrees of freedom are intractable by classical computers, since their complexity…”
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Geometric frustration in polygons of polariton condensates creating vortices of varying topological charge by Cookson, Tamsin, Kalinin, Kirill, Sigurdsson, Helgi, Töpfer, Julian D., Alyatkin, Sergey, Silva, Matteo, Langbein, Wolfgang, Berloff, Natalia G., Lagoudakis, Pavlos G.

“…Vorticity is a key ingredient to a broad variety of fluid phenomena, and its quantised version is considered to be the hallmark of superfluidity. Circulating…”
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Control of the oscillation frequency of a vortex cluster in the trapped polariton condensate by Sitnik, Kirill A., Gnusov, Ivan, Misko, Mikhail, Töpfer, Julian D., Alyatkin, Sergey, Lagoudakis, Pavlos G.

“…An optically trapped exciton–polariton condensate forms states corresponding to excited energy levels of the confining potential. Recently, it was shown that…”
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Directional planar antennae in polariton condensates by Aristov, Denis, Baryshev, Stepan, Töpfer, Julian D., Sigurðsson, Helgi, Lagoudakis, Pavlos G.

“…We report on the realization of all-optical planar microlensing for exciton–polariton condensates in semiconductor microcavities. We utilize spatial light…”
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Spontaneous Formation of Time-Periodic Vortex Cluster in Nonlinear Fluids of Light by Sitnik, Kirill A., Alyatkin, Sergey, Töpfer, Julian D., Gnusov, Ivan, Cookson, Tamsin, Sigurdsson, Helgi, Lagoudakis, Pavlos G.

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All-optical triangular and honeycomb lattices of exciton–polaritons by Alyatkin, Sergey, Sigurðsson, Helgi, Kartashov, Yaroslav V., Gnusov, Ivan, Sitnik, Kirill, Töpfer, Julian D., Lagoudakis, Pavlos G.

“…We implement an all-optically reconfigurable triangular lattice of exciton–polariton condensates in a III–V semiconductor microcavity. For this, we utilize a…”
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Controlling the Spatial Profile and Energy Landscape of Organic Polariton Condensates in Double-Dye Cavities by Putintsev, Anton D., McGhee, Kirsty E., Sannikov, Denis, Zasedatelev, Anton V., Töpfer, Julian D., Jessewitsch, Till, Scherf, Ullrich, Lidzey, David G., Lagoudakis, Pavlos G.

“…The development of high-speed, all-optical polariton logic devices underlies emerging unconventional computing technologies and relies on advancing techniques…”
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Observation of spin precession resonance in a stirred quantum fluid of light by Gnusov, Ivan, Baryshev, Stepan, Sigurđsson, Helgi, Sitnik, Kirill, Töpfer, Julian D., Alyatkin, Sergey, Lagoudakis, Pavlos G.

“…External driving of spins by magnetic or optical fields in different systems underpins numerous applications ranging from magnetic resonance imaging to…”
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Antiferromagnetic Ising model in a triangular vortex lattice of quantum fluids of light by Alyatkin, Sergey, Milián, Carles, Kartashov, Yaroslav V, Sitnik, Kirill A, Gnusov, Ivan, Töpfer, Julian D, Sigurðsson, Helgi, Lagoudakis, Pavlos G

“…Vortices are topologically distinctive objects appearing as phase twists in coherent fields of optical beams and Bose-Einstein condensates. Structured networks…”
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Quantum Fluids of Light in 2D Artificial Reconfigurable Aperiodic Crystals with Tailored Coupling by Alyatkin, Sergey, Sitnik, Kirill, Daníelsson, Valtýr Kári, Kartashov, Yaroslav V, Töpfer, Julian D, Sigurðsson, Helgi, Lagoudakis, Pavlos G

“…Aperiodic crystals are the intermediates between strictly periodic crystalline matter and amorphous solids. The lack of translational symmetry combined with…”
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Directional planar antennae in polariton condensates by Aristov, Denis, Baryshev, Stepan, Töpfer, Julian D, Sigurðsson, Helgi, Lagoudakis, Pavlos G

“…We report on the realization of all-optical planar microlensing for exciton-polariton condensates in semiconductor microcavities. We utilize spatial light…”
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Antiferromagnetic Ising model in a triangular vortex lattice of quantum fluids of light by Alyatkin, Sergey, Milián, Carles, Kartashov, Yaroslav V, Sitnik, Kirill A, Töpfer, Julian D, Sigurðsson, Helgi, Lagoudakis, Pavlos G

“…Sci. Adv. 10(34) eadj1589 (2024) Vortices are topologically distinctive objects appearing as phase twists in coherent fields of optical beams and Bose-Einstein…”
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Polariton spin jets through optical control by Pickup, Lucinda, Töpfer, Julian D, Sigurdsson, Helgi, Lagoudakis, Pavlos G

“…Phys. Rev. B 103, 155302 (2021) We demonstrate spin polarized jets in extended systems of ballistic exciton-polariton condensates in semiconductor…”
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Lotka-Volterra population dynamics in coherent and tunable oscillators of trapped polariton condensates by Töpfer, Julian D, Sigurdsson, Helgi, Alyatkin, Sergey, Lagoudakis, Pavlos G

“…We demonstrate a regime in which matter-wave condensates of exciton-polaritons trapped in an elliptically shaped two-dimensional potential appear as a coherent…”
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Solving the max-3-cut problem using synchronized dissipative networks by Harrison, Stella L, Sigurdsson, Helgi, Alyatkin, Sergey, Töpfer, Julian D, Lagoudakis, Pavlos G

“…Phys. Rev. Applied 17, 024063 (Feb. 2022) Many computational problems are intractable through classical computing and, as Moore's law is drawing to a halt,…”
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Time-Delay Polaritonics by Töpfer, Julian D, Sigurdsson, Helgi, Pickup, Lucinda, Lagoudakis, Pavlos G

“…Communications Physics 3, 2 (2020) Non-linearity and finite signal propagation speeds are omnipresent in nature, technologies, and real-world problems, where…”
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Quantum fluids of light in all-optical scatterer lattices by Alyatkin, Sergey, Sigurdsson, Helgi, Askitopoulos, Alexis, Töpfer, Julian D, Lagoudakis, Pavlos G

“…One of the recently established paradigms in condensed matter physics is examining a system's behaviour in artificially constructed potentials, giving insight…”
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Spontaneous formation of time-periodic vortex cluster in nonlinear fluids of light by Sitnik, Kirill A, Alyatkin, Sergey, Töpfer, Julian D, Gnusov, Ivan, Cookson, Tamsin, Sigurdsson, Helgi, Lagoudakis, Pavlos G

“…We demonstrate spontaneous formation of a nonlinear vortex cluster state in a microcavity exciton-polariton condensate with time-periodic sign flipping of its…”
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Shaping potential landscape for organic polariton condensates in double-dye cavities by Putintsev, Anton D, McGhee, Kirsty E, Sannikov, Denis, Zasedatelev, Anton V, Töpfer, Julian D, Jessewitsch, Till, Scherf, Ullrich, Lidzey, David G, Lagoudakis, Pavlos G

“…We investigate active spatial control of polariton condensates independently of the polariton-, gain-inducing excitation profile. This is achieved by…”
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Engineering spatial coherence in lattices of polariton condensates by Töpfer, Julian D, Chatzopoulos, Ioannis, Sigurdsson, Helgi, Cookson, Tamsin, Rubo, Yuri G, Lagoudakis, Pavlos G

“…Artificial lattices of coherently coupled macroscopic states are at the heart of applications ranging from solving hard combinatorial optimisation problems to…”
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