Solid state quantum computer
Solid state quantum computer
The control of single atoms and its interactions in solid matter offers a variety of applications in quantum information processing.
Numerous approaches for the realization of solid state quantum systems exist. Promising candidates are the manipulation of nuclei spins of P doped Si according to B. E. Kane for instance or addressing the ground levels of Nitrogen-Vacancy (NV) centers in diamond, which are split through the Zeeman effect. The last-mentioned approach is particularly interesting as NV centers are noun for their high photo- and temperature resistance, the longevity of their qubits as well as for the possibility of an optical read-out.
However, contemporary manufacturing processes do not suffice the high requirements concerning doping as they are neither deterministic nor do they reach necessary resolution. Therefore we have developed an atomic nano assembler: A novel device that is capable of implanting an exact number of atoms or molecules in a solid state substrate with high precision regarding both penetration depth and lateral position. This device consists of a linear segmented Paul Trap where ions are trapped and cooled by several cooling processes. The ions, which by now have been formed to a linear crystal, are accelerated out of the trap and implanted in the substrate.
The focus of our research is to discover and produce novel customized quantum materials for various applications: Quantum repeaters, triggered multi photon sources, calibrated single photon sources, quantum information circuits as well as sensors with unprecedented accuracy. Since we are especially interested in generating NV centers in diamond, we integrated a confocal microscope into our implantation chamber. This allows to follow the formation of NV centers in-situ.