62 citations · 189 across the 16 of their papers we have counts for
16 papers
Microscopic origin of the effective spin-spin interaction in a semiconductor quantum dot ensemble
Frederik Vonhoff, Andreas Fischer, Kira Deltenre +1
We present a microscopic model for a singly charged quantum dot (QD) ensemble to reveal the origin of the long-range effective interaction between the electron spins in the QDs. Wi…
Nuclear spin polaron-formation: anisotropy effects and quantum phase transition
Iris Kleinjohann, Andreas Fischer, Mikhail M. Glazov +1
We study theoretically the formation of the nuclear-spin polaron state in semiconductor nanosystems within the Lindblad equation approach. To this end, we derive a general Lindblad…
Cross-correlation spectra in interacting quantum dot systems
Andreas Fischer, Iris Kleinjohann, Nikolai A. Sinitsyn +1
Two-color spin-noise spectroscopy of interacting electron spins in singly charged semiconductor quantum dots provides information on the inter quantum dot interactions. We investig…
Kinetic approach to the nuclear-spin polaron formation
Andreas Fischer, Iris Kleinjohann, Frithjof B. Anders +1
Under optical cooling of nuclei, a strongly correlated nuclear-spin polaron state can form in semiconductor nanostructures with localized charge carriers due to the strong hyperfin…
Signatures of long-range spin-spin interactions in an (In,Ga)As quantum dot ensemble
Andreas Fischer, Eiko Evers, Steffen Varwig +3
We present an investigation of the electron spin dynamics in an ensemble of singly-charged quantum dots subject to an external magnetic field and laser pumping with circularly pola…
Non-equilibrium nuclear spin distribution function in quantum dots subject to periodic pulses
Natalie Jäschke, Andreas Fischer, E. Evers +4
Electron spin dephasing in a singly charged semiconductor quantum dot can partially be suppressed by periodic laser pulsing. We propose a semi-classical approach describing the dec…