248 citations · 1.6k across the 31 of their papers we have counts for
32 papers
Spin noise signatures of the self-induced Larmor precession
I. I. Ryzhov, V. O. Kozlov, N. S. Kuznetsov +7
Bose-Einstein condensates of exciton-polaritons are known for their fascinating coherent and polarization properties. The spin state of the condensate is reflected in polarization…
Superfluid currents in half-moon polariton condensates
E. S. Sedov, V. A. Lukoshkin, V. K. Kalevich +3
We excite exciton-polariton condensates in half-moon shapes by the non-resonant optical excitation of GaAs-based cylindrical pillar microcavities. In this geometry, the π-jump of t…
Determination of polariton condensates' critical temperature
E. Rozas, M. D. Martín, C. Tejedor +4
We investigate the thermal robustness of traveling polariton condensates. We create remote condensates that have never been in contact, and study their interference in momentum spa…
Synchronization crossover of polariton condensates in weakly disordered lattices
H. Ohadi, Y. del Valle-Inclan Redondo, A. J. Ramsay +5
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…
Strain-assisted optomechanical coupling of polariton condensate spin to a micromechanical resonator
O. Be'er, H. Ohadi, Y. del Valle-Inclan Redondo +5
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 resonat…
Temperature dependence of the coherence in polariton condensates
E. Rozas, M. D. Martín, C. Tejedor +4
We present a time-resolved experimental study of the temperature effect on the coherence of traveling polariton condensates. The simultaneous detection of their emission both in re…
Optical bistability under non-resonant excitation in spinor polariton condensates
L. Pickup, K. Kalinin, A. Askitopoulos +4
We realise bistability in the spinor of polariton condensates under non-resonant optical excitation and in the absence of biasing external fields. Numerical modelling of the system…
Persistent circular currents of exciton-polaritons in cylindrical pillar microcavities
V. A. Lukoshkin, V. K. Kalevich, M. M. Afanasiev +5
We have experimentally observed an eddy current of exciton polaritons arising in a cylindrical GaAs/AlGaAs pillar microcavity under the nonresonant optical pumping. The polariton c…
Spin order and phase transitions in chains of polariton condensates
H. Ohadi, A. J. Ramsay, H. Sigurdsson +8
We demonstrate that multiply-coupled spinor polariton condensates can be optically tuned through a sequence of spin-ordered phases by changing the coupling strength between nearest…
Inverse-phase Rabi oscillations in semiconductor microcavities
A. V. Trifonov, N. E. Kopteva, M. V. Durnev +7
We study experimentally the oscillations of a non stationary transient signal of a semiconductor microcavity with embedded InGaAs quantum wells. The oscillations occur as a result…
Tunable magnetic alignment between trapped exciton-polariton condensates
H. Ohadi, Y. del Valle-Inclan Redondo, A. Dreismann +6
Tunable spin correlations are found to arise between two neighboring trapped exciton-polariton condensates which spin-polarize spontaneously. We observe a crossover from an antifer…
Dynamics of the Energy Relaxation in a Parabolic Quantum Well Laser
A. V. Trifonov, E. D. Cherotchenko, J. L. Carthy +6
We explore two parabolic quantum well (PQW) samples, with and without Bragg mirrors, in order to optimise the building blocks of a Bosonic Cascade Laser. The photoluminescence spec…
Spontaneous spin bifurcations and ferromagnetic phase transitions in a spinor exciton-polariton condensate
H. Ohadi, A. Dreismann, Y. G. Rubo +6
We observe a spontaneous parity breaking bifurcation to a ferromagnetic state in a spatially trapped exciton-polariton condensate. At a critical bifurcation density under nonresona…
Spin Selective Filtering of Polariton Condensate Flow
T. Gao, C. Antón, T. C. H. Liew +5
Spin-selective spatial filtering of propagating polariton condensates, using a controllable spin-dependent gating barrier, in a one-dimensional semiconductor microcavity ridge wave…
Controllable structuring of exciton-polariton condensates in cylindrical pillar microcavities
V. K. Kalevich, M. M. Afanasiev, V. A. Lukoshkin +7
We observe condensation of exciton polaritons in quantum states composed of concentric rings when exciting cylindrical pillar GaAs/AlGaAs microcavities non-resonantly by a focused…
Robust platform for engineering pure-quantum-state transitions in polariton condensates
A. Askitopoulos, T. C. H. Liew, H. Ohadi +3
We report on pure-quantum-state polariton condensates in optical annular traps. The study of the underlying mechanism reveals that the polariton wavefunction always coalesces in a…
Optical control of spin textures in quasi-one-dimensional polariton condensates
C. Antón, S. Morina, T. Gao +7
We investigate, through polarization-resolved spectroscopy, the spin transport by propagating polariton condensates in a quasi one-dimensional microcavity ridge along macroscopic d…
Ignition and formation dynamics of a polariton condensate on a semiconductor microcavity pillar
C. Antón, D. Solnyshkov, G. Tosi +6
We present an experimental study on the ignition and decay of a polariton optical parametric oscillator (OPO) in a semiconductor microcavity pillar. The combination of a continuous…
Relaxation Oscillations in the Formation of a Polariton Condensate
Milena De Giorgi, Dario Ballarini, Paolo Cazzato +7
We report observation of oscillations in the dynamics of a microcavity polariton condensate formed under pulsed non resonant excitation. While oscillations in a condensate have alw…
Operation speed of polariton condensate switches gated by excitons
C. Antón, T. C . H. Liew, D. Sarkar +5
We present a time-resolved photoluminescence (PL) study in real- and momentum-space of a polariton condensate switch in a quasi-1D semiconductor microcavity. The polariton flow acr…
Quantum coherence in momentum space of light-matter condensates
C. Antón, G. Tosi, M. D. Martín +6
We show that the use of momentum-space optical interferometry, which avoids any spatial overlap between two parts of a macroscopic quantum state, presents a unique way to study coh…
Phase diagrams of magnetopolariton gases
V. P. Kochereshko, M. V. Durnev, L. Besombes +17
The magnetic field effect on phase transitions in electrically neutral bosonic systems is much less studied than those in fermionic systems, such as superconducting or ferromagneti…
Quantum reflections and the shunting of polariton condensate wave trains: implementation of a logic AND gate
C. Antón, T. C. H. Liew, J. Cuadra +6
We study the dynamics of polariton condensate wave trains that propagate along a quasi one-dimensional waveguide. Through the application of tuneable potential barriers the propaga…
Energy relaxation of exciton-polariton condensates in quasi-1D microcavities
C. Antón, T. C . H. Liew, G. Tosi +6
We present a time-resolved study of energy relaxation and trapping dynamics of polariton condensates in a semiconductor microcavity ridge. The combination of two non-resonant, puls…