Philipp Mirovsky

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We report noninvasive single-charge detection of the full probability distribution P(n) of the initialization of a quantum dot with n electrons for rapid decoupling from an electron reservoir. We analyze the data in the context of a model for sequential tunneling pinch-off, which has generic solutions corresponding to two opposing mechanisms. One limit(More)
The future redefinition of the international system of units in terms of natural constants requires a robust, high-precision quantum standard for the electrical base unit ampere. However, the reliability of any single-electron current source generating a nominally quantized output current I=ef by delivering single electrons with charge e at a frequency f is(More)
We realize and investigate an all-semiconductor quantized voltage source which generates quantized output voltages V(out) = f(h/e) linked only to two fundamental constants, the electron's charge e and Planck's constant h, and to an applied excitation frequency f. The device is based on an integrated quantized circuit of a single-electron pump operated at(More)
We show the sequential operation of three non-adiabatic single-electron pumps combined with single electron charge detection. Operating pumps in pulsed mode we determine the pump-error rate by counting. The simultaneous operation of the three pumps is investigated. The used architecture improves upon the error-rate of the bare individual device yielding a(More)
A freshly isolated strain of Plasmodium falciparum was cloned by limited dilution using a co-culture of infected erythrocytes on monolayers of functionally active rodent hepatocytes. 15 clones were isolated, and the anti-malarial activity of chloroquine, quinine, mefloquine and halofantrine against the clones, the original isolate, and a culture-adapted(More)
Lukas Fricke, ∗ Frank Hohls, 2 Niels Ubbelohde, Bernd Kaestner, Vyacheslavs Kashcheyevs, Christoph Leicht, Philipp Mirovsky, Klaus Pierz, Hans W. Schumacher, and Rolf J. Haug Institut für Festkörperphysik, Leibniz Universität Hannover, 30167 Hannover, Germany. Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany. Faculty of(More)
A current source based on clocked single electron transfer is the natural candidate for the realization of the SI base unit ampere following a future redefinition by a fixed value of the elementary charge e. However, the single electron transfer relies on quantum mechanical tunneling and thus is of inherent stochastic nature. This leads to small deviations(More)
We compare the robustness of the quantized current plateaus of semiconductor non-adiabatic quantized charge pumps consisting of a single quantum dot (SQD) and two QDs connected in series (DQD). For the SQD application of a perpendicular magnetic field leads to an enhanced robustness of the first current plateau I = ef, with f the pumping frequency and e the(More)
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