Quantum Physics with Ultrabroadband and Intense Terahertz Pulses

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Ultrafast Quantum Physics in Amplitude and Phase - UltraPhase, ERC Advanced Grant
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IEEE Journal of Selected Topics in Quantum Electronics. 2013, 19(1), pp. 8401608-8401608. ISSN 1077-260X. Available under: doi: 10.1109/JSTQE.2012.2202216
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We present recent advances in the generation of highly intense multiterahertz transients and their application to nonlinear spectroscopy of bulk semiconductors. An optimized scheme of parametric amplification results in broadband single- or few-cycle terahertz transients with peak electric fields up to 10 or 25 MV/cm, respectively. Time-resolved four-wave mixing terahertz spectroscopy of InSb far away from the interband resonance demonstrates clear signatures of a nonperturbative regime of Rabi flopping. We qualitatively explain the observed behavior within a model of a quantum two-level system. In addition, we demonstrate the dynamical Franz-Keldysh effect in InP resolved on a subcycle timescale. The field-induced modulation of the interband optical absorption at the second harmonic of the driving terahertz field is observed in full agreement with theoretical predictions.

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ISO 690PASHKIN, Alexej, Friederike JUNGINGER, Bernhard MAYER, Christian SCHMIDT, Olaf SCHUBERT, Daniele BRIDA, Rupert HUBER, Alfred LEITENSTORFER, 2013. Quantum Physics with Ultrabroadband and Intense Terahertz Pulses. In: IEEE Journal of Selected Topics in Quantum Electronics. 2013, 19(1), pp. 8401608-8401608. ISSN 1077-260X. Available under: doi: 10.1109/JSTQE.2012.2202216
BibTex
@article{Pashkin2013Quant-24563,
  year={2013},
  doi={10.1109/JSTQE.2012.2202216},
  title={Quantum Physics with Ultrabroadband and Intense Terahertz Pulses},
  number={1},
  volume={19},
  issn={1077-260X},
  journal={IEEE Journal of Selected Topics in Quantum Electronics},
  pages={8401608--8401608},
  author={Pashkin, Alexej and Junginger, Friederike and Mayer, Bernhard and Schmidt, Christian and Schubert, Olaf and Brida, Daniele and Huber, Rupert and Leitenstorfer, Alfred}
}
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