“Implementing a quantum memory with a frequency and bandwidth-tuneable superconducting resonator” (MCQST Colloquium) (Prof. Audrey Bienfait)
- Datum: 01.10.2024
- Uhrzeit: 14:00
- Vortragende(r): Prof. Audrey Bienfait
- École Normale Supérieure de Lyon, France
- Ort: Max Planck Institute of Quantum Optics, Hans-Kopferman-Straße 1, 85748 Garching
- Raum: Herbert Walther Lecture Hall
- Gastgeber: MCQST
Among platforms for storing quantum states in the microwave domain, solid state spin ensembles addressed via superconducting circuits stand out for their multimodal storage capability and the second-long coherence time when operated at clock transitions [Wolfowicz, G. et al. Nature nanotechnology 8, 561–564 (2013)].
Successful implementation of a practical memory scheme requires several keys features, such as the ability to tune on-demand the frequency and the bandwidth of the superconducting circuit [Julsgaard, B. et al. Phys. Rev. Lett. 110, 250503 (2013)]. In this talk, I will present an architecture accomplishing both, and strong coupling to an ensemble of bismuth donors in silicon. I will also show how this circuit enables radiative relaxation of the spins and allows us to implement in-situ nuclear level cooling. We will finish by assessing the ability of the system to implement a quantum memory.
References:
[1] Wolfowicz, G. et al. Nature nanotechnology 8, 561–564 (2013).
[2] Julsgaard, B. et al. Phys. Rev. Lett. 110, 250503 (2013).