All-optical control of the quantum flow of a polariton condensate

Sanvitto, D.; Pigeon, Simon; Amo, A.; Ballarini, Dario; Giorgi, Milena De; Carusotto, Iacopo; Hivet, R.; Pisanello, Ferruccio; Sala, V. G.; Guimarães, P. S. S.; Houdré, R.; Giacobino, E.; Ciuti, Cristiano; Bramati, Alberto; Gigli, Giuseppe

doi:10.1038/nphoton.2011.211

Cited by 161 publications

(154 citation statements)

References 42 publications

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“…The dynamical stability of the pump-only solution (12) can be established by allowing other states than the pump (i.e., the signal and idler states) to be perturbatively populated via parametric scattering processes,…”

Section: Bistability and Opo In The Plane-wave Approximationmentioning

confidence: 99%

“…The dynamical stability is ensured if ℑ(ω) > 0. Therefore, the threshold for instability of the pump-only solution (12) can be found imposing the condition ℑ(ω) = 0. By fixing the pump wave-vector and energy (k p , ω P ) and the signal wave-vector k s (as well as the exciton and photon lifetimes, κ X,C ), this provides a criterion for establishing the boundaries of the instability region, i.e., the lowest and highest values of the LP population |p| 2 for which the pump-only solution is not stable.…”

Section: Bistability and Opo In The Plane-wave Approximationmentioning

confidence: 99%

“…[11,12], the hydrodynamic nucleation of V-AV pairs is studied by making collide the polariton fluid with a large defect. In particular, polaritons are resonantly (coherently) injected with a pulsed laser beam, creating a population in the pump state only.…”

Section: Spontaneous Vortices In Trapped Incoherently Pumped Polaritonsmentioning

confidence: 99%

“…Their existence was first predicted in superfluids [1,2], and later in coherent waves [3]. Nowadays, quantised vortices have been the subject of extensive research across several areas of physics and have been observed in type-II superconductors, 4 He, ultracold atomic gases, non-linear optical media (for a review see, e.g., [4]) and very recently microcavity polaritons [5,6,7,8,9,10,11,12], the coherent strong mixing of a quantum well exciton with a cavity photon. adding a pulsed Gaussian probe to the OPO regime (the so called TOPO regime) in Sec.…”

Section: Introductionmentioning

confidence: 99%

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Vortices in Polariton OPO Superfluids

Marchetti

Szymańska

2012

Exciton Polaritons in Microcavities

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This chapter reviews the occurrence of quantised vortices in polariton fluids, primarily when polaritons are driven in the optical parametric oscillator (OPO) regime. We first review the OPO physics, together with both its analytical and numerical modelling, the latter being necessary for the description of finite size systems. Pattern formation is typical in systems driven away from equilibrium. Similarly, we find that uniform OPO solutions can be unstable to the spontaneous formation of quantised vortices. However, metastable vortices can only be injected externally into an otherwise stable symmetric state, and their persistence is due to the OPO superfluid properties. We discuss how the currents charactering an OPO play a crucial role in the occurrence and dynamics of both metastable and spontaneous vortices.

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Section: Bistability and Opo In The Plane-wave Approximationmentioning

confidence: 99%

Section: Bistability and Opo In The Plane-wave Approximationmentioning

confidence: 99%

Section: Spontaneous Vortices In Trapped Incoherently Pumped Polaritonsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Vortices in Polariton OPO Superfluids

Marchetti

Szymańska

2012

Exciton Polaritons in Microcavities

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“…Recently it has also proved possible to generate vortices by coherent resonant injection 17,18 together with flow against defects 19,20 . However, no observation of the predicted 21 spontaneous regular distribution of vortices in a lattice has yet been reported.…”

mentioning

confidence: 99%

Geometrically locked vortex lattices in semiconductor quantum fluids

et al. 2012

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Macroscopic quantum states can be easily created and manipulated within semiconductor microcavity chips using exciton-photon quasiparticles called polaritons. Besides being a new platform for technology, polaritons have proven to be ideal systems to study out-of-equilibrium condensates. Here we harness the photonic component of such a semiconductor quantum fluid to measure its coherent wavefunction on macroscopic scales. Polaritons originating from separated and independent incoherently pumped spots are shown to phase-lock only in high-quality microcavities, producing up to 100 vortices and antivortices that extend over tens of microns across the sample and remain locked for many minutes. The resultant regular vortex lattices are highly sensitive to the optically imposed geometry, with modulational instabilities present only in square and not triangular lattices. Such systems describe the optical equivalents to one-and two-dimensional spin systems with (anti)-ferromagnetic interactions controlled by their symmetry, which can be reconfigured on the fly, paving the way to widespread applications in the control of quantum fluidic circuits.

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Toward Coherent Control Around the Quantum-Classical Boundary

Katsuki

Ohmori

2016

Advances in Chemical Physics Volume 159

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All-optical control of the quantum flow of a polariton condensate

Cited by 161 publications

References 42 publications

Vortices in Polariton OPO Superfluids

Vortices in Polariton OPO Superfluids

Geometrically locked vortex lattices in semiconductor quantum fluids

Toward Coherent Control Around the Quantum-Classical Boundary

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