K
Khaled Karrai
Researcher at Ludwig Maximilian University of Munich
Publications - 128
Citations - 9264
Khaled Karrai is an academic researcher from Ludwig Maximilian University of Munich. The author has contributed to research in topics: Quantum dot & Exciton. The author has an hindex of 45, co-authored 128 publications receiving 8832 citations.
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Journal ArticleDOI
Stark-shift modulation absorption spectroscopy of single quantum dots
TL;DR: In this article, the Stark shift was used to tune the excitonic energy levels of a single quantum dot into resonance with a narrow-band laser line at 4.2 K. Relative changes in transmission can be detected this way down to one part per million.
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Nanoscale magnetic field mapping with a single spin scanning probe magnetometer
Loïc Rondin,Jean-Philippe Tetienne,Piernicola Spinicelli,C. Dal Savio,Khaled Karrai,Géraldine Dantelle,André Thiaville,Stanislas Rohart,Jean-François Roch,Vincent Jacques +9 more
TL;DR: In this article, a lock-in technique on the electron spin resonance frequency of a single nitrogen-vacancy defect placed at the apex of an atomic force microscope tip was used to demonstrate quantitative magnetic field mapping with nanoscale resolution.
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Voltage control of the spin dynamics of an exciton in a semiconductor quantum dot.
Jason M. Smith,Paul A. Dalgarno,Richard J. Warburton,Alexander O. Govorov,Khaled Karrai,Brian D. Gerardot,Brian D. Gerardot,Pierre Petroff +7 more
TL;DR: The spin-flip mechanism involves a spin exchange with the Fermi sea in the back contact of the device and corresponds to the high temperature Kondo regime and the Anderson Hamiltonian is used to calculate a spin-Flip rate.
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Deterministic and electrically tunable bright single-photon source
A. K. Nowak,Simone Luca Portalupi,V. Giesz,O. Gazzano,O. Gazzano,C. Dal Savio,P. F. Braun,Khaled Karrai,C. Arnold,Loïc Lanco,Loïc Lanco,Isabelle Sagnes,Aristide Lemaître,Pascale Senellart +13 more
TL;DR: A novel photonic structure and a technology allowing the deterministic implementation of electrical control for a quantum dot in a microcavity are presented and a deterministic and electrically tunable single-photon source with an extraction efficiency is demonstrated.
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Optical self cooling of a deformable Fabry-Perot cavity in the classical limit
TL;DR: In this article, the authors investigated the optomechanical properties of a Fabry-Perot cavity with a mirror mounted on a spring, which allows the cavity length to change elastically under the effect of light-induced forces.