Nonlinear spectroscopy of exciton-polaritons in a GaAs-based microcavity

Schmutzler, Johannes; Aßmann, Marc; Czerniuk, Thomas; Kamp, M.; Schneider, Christian; Höfling, Sven; Bayer, М.

doi:10.1103/physrevb.90.075103

Cited by 21 publications

(22 citation statements)

References 37 publications

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“…The mechanism of the optical field formation discussed here is related to renormalization of the electron energy spectrum of bulk GaAs in the field of elliptically polarized light wave and to enhancement of the electromagnetic field intensity in microcavities. Besides, semiconductor microcavities demonstrate a variety of specific polarization-dependent linear and nonlinear effects 45 46 47 48 , including polarization conversion, self-induced Larmor precession, second harmonic generation, spin to angular momentum conversion, etc. Each of these effects may be of particular importance for the optical field induction in the strong coupling regime.…”

Section: Discussionmentioning

confidence: 99%

Spin noise explores local magnetic fields in a semiconductor

Ryzhov

Kozlov

Smirnov

et al. 2016

Sci Rep

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Rapid development of spin noise spectroscopy of the last decade has led to a number of remarkable achievements in the fields of both magnetic resonance and optical spectroscopy. In this report, we demonstrate a new – magnetometric – potential of the spin noise spectroscopy and use it to study magnetic fields acting upon electron spin-system of an n-GaAs layer in a high-Q microcavity probed by elliptically polarized light. Along with the external magnetic field, applied to the sample, the spin noise spectrum revealed the Overhauser field created by optically oriented nuclei and an additional, previously unobserved, field arising in the presence of circularly polarized light. This “optical field” is directed along the light propagation axis, with its sign determined by sign of the light helicity. We show that this field results from the optical Stark effect in the field of the elliptically polarized light. This conclusion is supported by theoretical estimates.

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Section: Discussionmentioning

confidence: 99%

Spin noise explores local magnetic fields in a semiconductor

Ryzhov

Kozlov

Smirnov

et al. 2016

Sci Rep

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“…A density ordered superfluid is generated to avoid frustration. These on-site pairing terms are natural in Kerr cavity systems [27], exciton-polariton systems [28,29] as well as in NMR systems with antipunching technique [30]. However, the previous work is only focused on the weak interaction region where the density order is generated in presence of any weak pairing term.…”

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confidence: 99%

Mott Insulator-Density Ordered Superfluid Transition and "Shamrock Transition" in a Frustrated Triangle Lattice

Chen¹

2021

Preprint

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Density order is usually a consequence of the competition between long-range and short-range interactions. Here we report a density ordered superfluid emergent from a homogeneous Mott insulator due to the competition between frustrations and local interactions. This transition is found in a Bose-Hubbard model on a frustrated triangle lattice with an extra pairing term. Further, we find a quantum phase transition between two different density ordered superfluids, which is beyond the Landau-Ginzburg paradigm. Across this transition, a U(1) symmetry is emergent, while the symmetry in each density ordered superfluid is Z2 × Z3. Because there emerges a shamrock-like degenerate ground state in parameter space, we call the transition "shamrock transition". Effective low energy theories are established for the two transitions mentioned above and we find their resemblance and differences with clock models.

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“…This provides interesting perspectives for functional polariton circuits and classical polariton simulators [37][38][39][40][41]. Resonant injection of dark excitons via two photon absorption [35,42,43] might provide means to create tailored optical potentials without perturbing relaxation dynamics. Finally, typical pulsed excitation experiments on polariton systems employ lasers with a pulse separation of about 13 ns.…”

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confidence: 99%

Tracking Dark Excitons with Exciton Polaritons in Semiconductor Microcavities

et al. 2019

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Dark excitons are of fundamental importance for a wide variety of processes in semiconductors, but are difficult to investigate using optical techniques due to their weak interaction with light fields. We reveal and characterize dark excitons non-resonantly injected into a semiconductor microcavity structure containing InGaAs/GaAs quantum wells by a gated train of eight 100 fs-pulses separated by 13 ns by monitoring their interactions with the bright lower polariton mode. We find a surprisingly long dark exciton lifetime of more than 20 ns which is longer than the time delay between two consecutive pulses. This creates a memory effect that we clearly observe through the variation of the time-resolved transmission signal. We propose a rate equation model that provides a quantitative agreement with the experimental data. arXiv:1806.09422v2 [cond-mat.mes-hall]

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Nonlinear spectroscopy of exciton-polaritons in a GaAs-based microcavity

Cited by 21 publications

References 37 publications

Spin noise explores local magnetic fields in a semiconductor

Spin noise explores local magnetic fields in a semiconductor

Mott Insulator-Density Ordered Superfluid Transition and "Shamrock Transition" in a Frustrated Triangle Lattice

Tracking Dark Excitons with Exciton Polaritons in Semiconductor Microcavities

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