Výsledky vyhledávání - "Fabian Olbrich"

Coherence and indistinguishability of highly pure single photons from non-resonantly and resonantly excited telecom C-band quantum dots

Autor: Fabian Olbrich, Matthias Paul, Peter Michler, Michael Jetter, Cornelius Nawrath, Simone Luca Portalupi

In the present work, the effect of resonant pumping schemes in improving the photon coherence is investigated on InAs/InGaAs/GaAs quantum dots emitting in the telecom C-band. The linewidths of transitions of multiple exemplary quantum dots are determ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ff5592cfea1a1df2faad05fbc80e8ce

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Characterization of Electro-Optical Devices with Low Jitter Single Photon Detectors – Towards an Optical Sampling Oscilloscope Beyond 100 GHz

Autor: Manfred Berroth, Markus Wick, Fabian Olbrich, Michael Schlagmuller, Thomas Veigel, Helmut Fedder, Peter Michler, Steffen Oesterwind

Publikováno v: ECOC

We showcase an optical random sampling scope that exploits single photon counting and apply it to characterize optical transceivers. We study single photon detectors with a jitter down to 40 ps. The method can be extended beyond 100 GHz.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8b9164bf5a885d518a9452d9252061a0
https://doi.org/10.1109/ecoc.2018.8535415

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Single-photon and polarization-entangled photon emission from InAs quantum dots in the telecom C-band

Autor: Matthias Paul, Fabian Olbrich, Jan Kettler, Jonatan Höschele, Peter Michler, Michael Jetter, Simone Luca Portalupi

Publikováno v: Nanophotonics VII.

We report on the optical properties of recently developed telecom-wavelength quantum dots based on the GaAs material system. In order to achieve the InAs quantum dot wavelength shift towards the telecom C-band, strain-relaxation with the help of an I

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2cb323c0b465c348b48320bbbd8628f6
https://doi.org/10.1117/12.2306765

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Tuning emission energy and fine structure splitting in quantum dots emitting in the telecom O-band

Autor: Fabian Olbrich, Jan Kettler, Michael Jetter, Fei Ding, Bianca Höfer, Jonatan Höschele, Oliver G. Schmidt, Simone Luca Portalupi, Peter Michler, Matthias Paul

Publikováno v: AIP Advances
AIP Advances 9 (2019), Nr. 8
AIP Advances, Vol 9, Iss 8, Pp 085112-085112-6 (2019)

We report on optical investigations of MOVPE-grown InGaAs/GaAs quantum dots emitting at the telecom O-band that were integrated onto uniaxial piezoelectric actuators. This promising technique, which does not degrade the optical quality or performance

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a19a5169bbd3e81173ada78529ddc7e
https://doi.org/10.1063/1.5110865

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Neutral and charged biexciton-exciton cascade in near-telecom-wavelength quantum dots

Autor: Matthias Florian, Fabian Olbrich, Matthias Paul, Katharina D. Zeuner, Jan Kettler, Michael Jetter, Christian Carmesin, Peter Michler, Frank Jahnke

Publikováno v: Physical Review B. 94

We investigate the cascaded emission of photons from low-density InGaAs/GaAs quantum dots grown by metal-organic vapor-phase epitaxy that are intentionally redshifted toward telecommunication wavelengths. We observe multiple radiative cascades within

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8a6aadae1de83baa6f4ac15bbce5372e
https://doi.org/10.1103/physrevb.94.045303

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Single-photon and photon pair emission from MOVPE-grown In(Ga)As quantum dots: shifting the emission wavelength from 1.0 to 1.3 μm

Autor: Fabian Olbrich, Michael Jetter, Matthias Paul, Katharina D. Zeuner, Jan Kettler, Peter Michler

Publikováno v: Applied Physics B. 122

InAs quantum dots grown on a GaAs substrate have been one of the most successful semiconductor material systems to demonstrate single-photon-based quantum optical phenomena. In this context, we present the feasibility to extend the low-temperature ph

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4fedac1fa11de2f116c01d0aac0b4749
https://doi.org/10.1007/s00340-015-6280-0

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Deterministic integration and optical characterization of telecom O-band quantum dots embedded into wet-chemically etched Gaussian-shaped microlenses

Autor: Fabian Olbrich, Cornelius Nawrath, Marc Sartison, Peter Michler, Michael Jetter, Simone Luca Portalupi, Stefan Hepp, Sascha Kolatschek, Lena Engel

Publikováno v: Applied Physics Letters. 113:032103

In the present study, we report on the deterministic integration of quantum dots, emitting in the telecom O-band, into wet-chemically fabricated Gaussian-shaped microlenses which exhibit a surface quality comparable to epi-ready wafers. The slow wet-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2e92ec3368916aed27c0f4187c43a328
https://doi.org/10.1063/1.5038271

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Polarization-entangled photons from an InGaAs-based quantum dot emitting in the telecom C-band

Autor: Jonatan Höschele, Jan Kettler, Peter Michler, Matthias Paul, Fabian Olbrich, Markus Müller, Simone Luca Portalupi, Michael Jetter

Publikováno v: Applied Physics Letters. 111:133106

We demonstrate the emission of polarization-entangled photons from a single semiconductor quantum dot in the telecom C-band (1530 nm–1565 nm). To reach this telecommunication window, the well-established material system of InAs quantum dots embedde

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df4fc151373c22c42507b23664fd9e83
https://doi.org/10.1063/1.4994145

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Single-photon emission at 1.55 μm from MOVPE-grown InAs quantum dots on InGaAs/GaAs metamorphic buffers

Autor: Jan Kettler, Matthias Paul, Fabian Olbrich, Susanne Schreier, Jonatan Höschele, Michael Jetter, Simone Luca Portalupi, Peter Michler

Publikováno v: Applied Physics Letters. 111:033102

By metal-organic vapor-phase epitaxy, we have fabricated InAs quantum dots (QDs) on InGaAs/GaAs metamorphic buffer layers on a GaAs substrate with area densities that allow addressing single quantum dots. The photoluminescence emission from the quant

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::28640a5c852c263518b140aaadba3c0a
https://doi.org/10.1063/1.4993935

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