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High fidelity measurement of singlet-triplet states in a quantum dot
T. Meunier, K-J. Tielrooij, I. T. Vink +5
We demonstrate experimentally a read-out method that distinguishes between two-electron spin states in a quantum dot. This scheme combines the advantages of the two existing mechan…
Imaging Electrical Conduction through InAs Nanowires
Ania C. Bleszynski, Floris A. Zwanenburg, Robert M. Westervelt +3
We show how a scanning probe microscope (SPM) can be used to image electron flow through InAs nanowires, elucidating the physics of nanowire devices on a local scale. A charged SPM…
Spins in few-electron quantum dots
R. Hanson, L. P. Kouwenhoven, J. R. Petta +2
This review describes the physics of spins in quantum dots containing one or two electrons, from an experimentalist's viewpoint. Various methods for extracting spin properties from…
Experimental signature of phonon-mediated spin relaxation
T. Meunier, I. T. Vink, L. H. Willems van Beveren +7
We observe an experimental signature of the role of the phonons in spin relaxation between triplet and singlet states in a two-electron quantum dot. Using both the external magneti…
Supercurrent reversal in quantum dots
Jorden A. van Dam, Yuli V. Nazarov, Erik P. A. M. Bakkers +2
When two superconductors become electrically connected by a weak link a zero-resistance supercurrent can flow. This supercurrent is carried by Cooper pairs of electrons with a comb…
Driven coherent oscillations of a single electron spin in a quantum dot
F. H. L. Koppens, C. Buizert, K. J. Tielrooij +5
The ability to control the quantum state of a single electron spin in a quantum dot is at the heart of recent developments towards a scalable spin-based quantum computer. In combin…
Using a quantum dot as a high-frequency shot noise detector
E. Onac, F. Balestro, L. H. Willems van Beveren +3
We present the experimental realization of a Quantum Dot (QD) operating as a high-frequency noise detector. Current fluctuations produced in a nearby Quantum Point Contact (QPC) io…
Non-destructive measurement of electron spins in a quantum dot
T. Meunier, I. T. Vink, L. H. Willems van Beveren +5
We propose and implement a non-destructive measurement that distinguishes between two-electron spin states in a quantum dot. In contrast to earlier experiments with quantum dots, t…
Excited state spectroscopy in carbon nanotube double quantum dots
Sami Sapmaz, Carola Meyer, Piotr Beliczynski +2
We report on low temperature measurements in a fully tunable carbon nanotube double quantum dot. A new fabrication technique has been used for the top-gates in order to avoid cover…
Quantum supercurrent transistors in carbon nanotubes
Pablo Jarillo-Herrero, Jorden A. van Dam, Leo P. Kouwenhoven
Electronic transport through nanostructures is greatly affected by the presence of superconducting leads. If the interface between the nanostructure and the superconductors is suff…