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Coherent Quantum Control of Excitons at Ultracold and High Density in Cu2O with Phase Manipulated Pulses

Abstract : By phase manipulation of a short laser pulse, it is possible to selectively generate ultracold excitons in a two-photon process while quenching the multiphoton excitation of hot electrons and holes. We show how this technique allows us to suppress the heating of n=1 orthoexcitons in Cu2O at high density. Using a laser pulse having an energy of a few μJ and duration of 100 fs, we are thus able to produce a cold exciton gas up to a density of 10^15  cm^-3.
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https://hal-polytechnique.archives-ouvertes.fr/hal-00558905
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Submitted on : Monday, January 24, 2011 - 2:46:41 PM
Last modification on : Wednesday, May 11, 2022 - 3:22:04 PM

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Takuro Ideguchi, Kosuke yoshioka, André Mysyrowicz, Makoto Kuwata-Gonokami. Coherent Quantum Control of Excitons at Ultracold and High Density in Cu2O with Phase Manipulated Pulses. Physical Review Letters, American Physical Society, 2008, 100 (23), pp.233001. ⟨10.1103/PhysRevLett.100.233001⟩. ⟨hal-00558905⟩

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