Acoustic phonon broadening mechanism in single quantum dot emission

Besombes, L.; Kheng, K.; Marsal, L.; Mariette, H.

doi:10.1103/physrevb.63.155307

Cited by 486 publications

(458 citation statements)

References 13 publications

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“…A broad shoulder to the quantum dot line shape due to phonons has also been observed in CW-photoluminescence measurements. 25,26 In the case of the ideal two-level atom, the 3p -peak has a slight arrow-head like shape. The exciton-phonon interaction appears to accentuate the arrow-head.…”

Section: Influence Of Detuningmentioning

confidence: 99%

Effect of detuning on the phonon induced dephasing of optically driven InGaAs/GaAs quantum dots

Ramsay

Godden

Boyle

et al. 2011

Journal of Applied Physics

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Recently, longitudinal acoustic phonons have been identified as the main source of the intensity damping observed in Rabi rotation measurements of the ground-state exciton of a single InAs/GaAs quantum dot. Here we report experiments of intensity damped Rabi rotations in the case of detuned laser pulses. The results have implications for the coherent optical control of both excitons and spins using detuned laser pulses.

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Section: Influence Of Detuningmentioning

confidence: 99%

Effect of detuning on the phonon induced dephasing of optically driven InGaAs/GaAs quantum dots

Ramsay

Godden

Boyle

et al. 2011

Journal of Applied Physics

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“…This value increases only by a few µeV as the temperature is raised to 30 K. The main effect of the temperature increase on the emission lines is the strong deviation from a Lorentzian line shape at higher temperature, see Fig. 3b and d, that we attribute to lattice relaxation due to exciton-acoustic phonon coupling [13].…”

Section: The Neutral Exciton X 0 and The Trion X 1−mentioning

confidence: 81%

Spin-Dependent Coupling of Charged Quantum Dot Excitons with Continuum States

et al. 2004

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Magnetic field and temperature dependent photoluminescence studies on neutral and charged excitons in individual InAs quantum dots allow us to uncover different mechanisms by which the discrete quantum dot states are coupled to delocalized continuum states in a quantum well (the wetting layer). The behaviour of the neutral and singly charged excitons can be explained taking only discrete quantum dot states into account. For doubly and triply charged excitons we have to consider spin dependent coherent and incoherent interactions between discrete quantum dot states and delocalized wetting layer states.

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“…The interaction with optical phonons gives rise to satellites in the spectrum separated by multiples of the optical phonon frequency, which again are superimposed on a background due to the acoustic phonons. This type of spectra has been seen in many experimental and theoretical studies [50,78,51,62,67].…”

Section: Rabi Rotationsmentioning

confidence: 95%

“…3.1.3. Obviously, such a non-exponential and incomplete decay of the polarization, which in the spectral domain corresponds to strongly non-Lorentzian line shapes of the absorption or luminescence spectra [51,50,137], cannot be captured by a simple decay rate for the polarization. In fact, a naive calculation of phonon-induced relaxation rates according to Fermi's golden rule would give a zero result in this case, because the energies of the initial and final electronic state are the same and the phonon spectral density J(ω) is zero at ω = 0.…”

Section: Theoretical Methodsmentioning

confidence: 99%

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The role of phonons for exciton and biexciton generation in an optically driven quantum dot

Reiter

Kuhn

Glässl

et al. 2014

J. Phys.: Condens. Matter

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Abstract. For many applications of semiconductor quantum dots in quantum technology a well controlled state preparation of the quantum dot states is mandatory. Since quantum dots are embedded in the semiconductor matrix, the interaction with phonons plays often a major role in the preparation process. In this review, we discuss the influence of phonons on three basically different optical excitation schemes which can be used for the preparation of exciton, biexciton, and superposition states: a resonant excitation leading to Rabi rotations in the excitonic system, an excitation with chirped pulses exploiting the effect of adiabatic rapid passage, and an off-resonant excitation giving rise to a phononassisted state preparation. We give an overview over experimental and theoretical results showing the role of the phonons and compare the performance of the schemes for state preparation.

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Acoustic phonon broadening mechanism in single quantum dot emission

Cited by 486 publications

References 13 publications

Effect of detuning on the phonon induced dephasing of optically driven InGaAs/GaAs quantum dots

Effect of detuning on the phonon induced dephasing of optically driven InGaAs/GaAs quantum dots

Spin-Dependent Coupling of Charged Quantum Dot Excitons with Continuum States

The role of phonons for exciton and biexciton generation in an optically driven quantum dot

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