Optical Stark Effects in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>J</mml:mi></mml:math>-Aggregate–Metal Hybrid Nanostructures Exhibiting a Strong Exciton–Surface-Plasmon-Polariton Interaction

Vasa, Parinda; Wang, Wei; Pomraenke, R.; Maiuri, Margherita; Manzoni, Cristian; Cerullo, Giulio; Lienau, Christoph

doi:10.1103/physrevlett.114.036802

Cited by 55 publications

(69 citation statements)

References 55 publications

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“…To test this alternative explanation, we 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 perform additional measurements at an incidence angle of 32°, which is near the resonant coupling angle. At this angle, the local field strength at the QW is nearly identical to that at 34° incidence angle 45 .…”

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confidence: 68%

“…We also observe a slight angle dependence of the LH and HH resonance widths, indicating that the coupling to SPPs modifies the radiative damping of the exciton resonances 27,29 . Comparison to model calculations indicates that the lineshapes of these resonances can only be fully explained by including several physical effects simultaneously, specifically excitation induced dephasing, inhomogeneous broadening, and pump induced spectral shifts [43][44][45] . The combination of these effects can lead to large phase changes and asymmetries in the individual resonance line shapes.…”

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confidence: 96%

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Quantum Beats in Hybrid Metal–Semiconductor Nanostructures

et al. 2015

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We investigate non-radiative quantum coherence in the presence of coupling between excitons and surface plasmon polaritons (SPPs) in a hybrid metal-semiconductor nanostructure. In particular, we study how quantum coherence between heavy-hole (HH) and light-hole (LH) excitons in a GaAs quantum well (QW) is modified when they are coupled to SPPs of a gold grating. We find that the nonradative coherence is reduced in correlation with the coupling strength between the excitons and SPPs. Under the resonant coupling condition, the non-radiative coherence remains in the range of hundreds of femtoseconds, which is significantly longer than the plasmonic coherence. These experiments directly probe quantum dynamics in a prototypical hybrid system and provide critical information for exploring future quantum plasmonics applications.

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confidence: 68%

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confidence: 96%

Quantum Beats in Hybrid Metal–Semiconductor Nanostructures

et al. 2015

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“…The coupling of molecular electronic transitions to the vacuum field has been more extensively studied13, 14, 15, 16, 17, 18 than VSC and has already shown many exciting results, such as enhanced conductivity19 and non‐radiative energy transfer,20 lasing,21 and condensation 22. Together with VSC, it clearly opens many new possibilities for molecular and materials science that should be fully explored.…”

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confidence: 99%

Ground‐State Chemical Reactivity under Vibrational Coupling to the Vacuum Electromagnetic Field

et al. 2016

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The ground‐state deprotection of a simple alkynylsilane is studied under vibrational strong coupling to the zero‐point fluctuations, or vacuum electromagnetic field, of a resonant IR microfluidic cavity. The reaction rate decreased by a factor of up to 5.5 when the Si−C vibrational stretching modes of the reactant were strongly coupled. The relative change in the reaction rate under strong coupling depends on the Rabi splitting energy. Product analysis by GC‐MS confirmed the kinetic results. Temperature dependence shows that the activation enthalpy and entropy change significantly, suggesting that the transition state is modified from an associative to a dissociative type. These findings show that vibrational strong coupling provides a powerful approach for modifying and controlling chemical landscapes and for understanding reaction mechanisms.

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“…The OSE results in a shifting of the exciton transition energy to higher energy in a semiconductor by optical pumping with photon energies that are below the bandgap (non-resonant)23. Because of the coherent nature, the OSE has many promising applications, for example, in quantum information processing and communication, serving as a potential ultrafast optical switch34, source of quantum entanglement56 and a method for spin manipulation78910. The OSE can also be utilized to produce ultra-short laser pulses serving as a passive mode-locking saturable absorber111213.…”

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confidence: 99%

Large polarization-dependent exciton optical Stark effect in lead iodide perovskites

et al. 2016

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A strong interaction of a semiconductor with a below-bandgap laser pulse causes a blue-shift of the bandgap transition energy, known as the optical Stark effect. The energy shift persists only during the pulse duration with an instantaneous response time. The optical Stark effect has practical relevance for applications, including quantum information processing and communication, and passively mode-locked femtosecond lasers. Here we demonstrate that solution-processable lead-halide perovskites exhibit a large optical Stark effect that is easily resolved at room temperature resulting from the sharp excitonic feature near the bandedge. We also demonstrate that a polarized pump pulse selectively shifts one spin state producing a spin splitting of the degenerate excitonic states. Such selective spin manipulation is an important prerequisite for spintronic applications. Our result implies that such hybrid semiconductors may have great potential for optoelectronic applications beyond photovoltaics.

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Optical Stark Effects inJ-Aggregate–Metal Hybrid Nanostructures Exhibiting a Strong Exciton–Surface-Plasmon-Polariton Interaction

Cited by 55 publications

References 55 publications

Quantum Beats in Hybrid Metal–Semiconductor Nanostructures

Quantum Beats in Hybrid Metal–Semiconductor Nanostructures

Ground‐State Chemical Reactivity under Vibrational Coupling to the Vacuum Electromagnetic Field

Large polarization-dependent exciton optical Stark effect in lead iodide perovskites

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