We have realized energy tuning and polarization control of the single photon emission with a control-laser field. Our results mark an important step towards tailored single photon emission from a quantum system based on quantum optical principles.
We have engineered low capacitance single quantum dot photodiodes as sensor devices for the optoelectronic sampling of ultrafast electric signals. We were able to sample electric transients below 20 ps with a voltage resolution in the mV-range.
Our recent paper entitled „Electrically controlled rapid adiabatic passage in a single quantum dot“ has been published in Applied Physics Letter. In this paper, we report the implementation of a scalable coherent optoelectronic approach, where transform limited optical laser pulses are used in combination with the electric transients. If applied to the quantum dot exciton we are able to achieve robust inversion of the exciton two level system to…
Blind people can now learn archery at the Haxterpark with an innovative optoelectronic target unit. The technology and know-how for this issue was established in the optoelectronics laboratories of Prof. Artur Zrenner as a result of many years of research experience.
Protocol for the coherent optoelectronic preparation of an arbitrary quantum state in an exciton qubit and corresponding representation on the Bloch sphere. For the experiment single quantum dot photodiodes have been connected to BiCMOS chips working at T=4.2 K.
In our recent work we report on the coherent phase manipulation of quantum dot excitons by electric means. The phase manipulation was performed and quantified in a Ramsey experiment, where ultrafast electric detuning of the exciton energy is performed synchronous to double pulse ps laser excitation.
For the experimental realization we used low capacitance single quantum dot photodiodes which were electrically controlled by ultrafast, custom…
