Regensburg 2022 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 31: Superconducting Electronics and Cryogenics: Poster Session

TT 31.25: Poster

Donnerstag, 8. September 2022, 15:00–18:00, P1

Quantum manipulation of NV centers in diamond with on-chip coplanar waveguides at mK temperatures — •Ioannis Karapatzakis, Amer Hasecic, Marcel Schrodin, Rainer Kraft, and Wolfgang Wernsdorfer — Physikalisches Institut, Karlsruher Institut für Technologie, Karlsruhe, Deutschland

Quantum information technology is advancing in several physical fields. Optically addressable spins such as Nitrogen-Vacancy (NV) centers in the solid-state structure of diamond stand out for their versatile applications in quantum mechanics which range from quantum processing of information [1] to magnetic field sensing [2]. NV centers can be reliably initialized optically and have long coherence and relaxation times.

Here, the quantum manipulation of NV centers is shown inside a dilution refrigerator (sionludi) at mK temperatures. Using lithographically fabricated on-chip coplanar waveguide circuits, Rabi oscillations can be driven with frequencies above 100 MHz at comparatively low microwave insertion power of 100 mW (20 dBm). This allows for fast manipulation of the NV center spin states at mK temperatures without excessive heating of the sample.

[1] A. Tsukanov, Russian Microelectronics 41, 91 (2012)

[2] L. Rondin, Reports on Progress in Physics 77, 056503 (2014)