Highlights for SOLID

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Format: 2019-06-17
Format: 2019-06-17
Format: 2019-06-17

Nov 20, 2013

Dr. Ronald Hanson from the Kavli Institute of Nanoscience, Delft University of Technology is the 2012 recipient of the Nicholas Kurti European Science Prize. This prize is intended to recognise and promote outstanding achievements of young scientists in the field of physical sciences research and to support their career development. Hanson receives a €8000 cash prize, a unique trophy and certificate. He also has the opportunity to present his work at a conference of his choice.

Apr 9, 2013

We have investigated the microwave frequency dynamic admittance of a quantum dot tunnel coupled to a two-dimensional electron gas. The measurements are made via a high-quality 6.75 GHz on-chip resonator capacitively coupled to the dot. The resonator frequency is found to shift both down and up close to conductance resonances of the dot corresponding to a change in the reactance of the system from capacitive to inductive (see Fig. 1). The observations are consistently explained in a scattering matrix model.

Apr 9, 2013

One important key characteristics of a non-classical physical system is entanglement. For a system containing three qubits two important classes of entangled states are GHZ- and W-states. The first class consists of superposition states between |000⟩ and |111⟩ and the second one arises when a single excitation is symmetrically shared between three qubits, i.e. in an equal superposition between |001⟩, |010⟩ and |100⟩.

Apr 9, 2013

Tomography is the main method used for measuring the fidelity of an experimentally implemented quantum process. However, it is a very inefficient method since the number of measurements as well as the time needed for the data post-processing scale exponentially with the number of qubits. With the ongoing experimental progress and growth in system size, quantum process tomography will soon become infeasible in state-of-the art experiments.

Feb 15, 2013

Scientists from the Kavli Institute of Nanoscience have brought two atomic nuclei in synthetic diamond into a quantum entangled state. They published their findings on 14 October 2012 online in Nature Physics.

Demonstration of entanglement-by-measurement of solid state qubits
W. Pfaff, T.H. Taminiau, L. Robledo, H. Bernien, M.L. Markham, D. J. Twitchen, R. Hanson
Nature Physics 9, 29–33 (2013)

Feb 15, 2013

Researchers from the Kavli Institute of Nanoscience (Delft University of Technology) and the FOM Foundation have devised a new method for reading out the electron state in a carbon nanotube. They did this by 'stamping’ an individual nanotube on a chip. Then the electron state can be read out, as the nanotube remains very clean and controllable. Electrons in such a nanotube can acquire special quantum characteristics which make these structures interesting for future quantum computers. The readout of the electron states is a crucial step in this.

Oct 9, 2012

The Nobel Prize in Physics 2012 was awarded jointly to Serge Haroche and David J. Wineland "for ground-breaking experimental methods that enable measuring and manipulation of individual quantum systems".

Read the official announcement on nobelprize.org.

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