SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 8: QI Poster I (joint session QI/Q)
Q 8.37: Poster
Montag, 6. März 2023, 16:30–19:00, Empore Lichthof
Towards on-chip microwave-to-telecom transduction based on erbium-doped silicon — •Daniele Lopriore1,2 and Andreas Reiserer1,2 — 1Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany — 2TU München and Munich Center for Quantum Science and Technology, 85748 Garching, Germany
The development of a device that converts microwave to optical photons at a telecommunication wavelength would be a key enabler for the communication between remote quantum computers. In this context, we are investigating erbium ensembles doped into nanophotonic silicon waveguides. This novel hardware platform features a unique combination of a small inhomogeneous broadening and an exceptional optical coherence even in nanostructured materials [1]. In an external magnetic field, the ground and excited states are split into doublets, which allows the erbium ensemble to act as the nonlinear medium mediating an efficient conversion process [2,3]. To this end, we plan to enhance both the microwave and the telecom transitions with resonators of high quality factor, fabricated on the same silicon chip. By optimizing the resonator geometries in order to maximize the overlap between the resonating fields and the erbium dopants, we aim to achieve transduction efficiencies approaching unity [3]. This would pave the way for the entanglement of superconducting qubits in remote cryostats.
[1] A. Gritsch, et al. Phys.Rev.X 12, 041009 (2022).
[2] L. Williamson, et al. Phys.Rev.Lett. 113, 203601 (2014).
[3] C. O’Brien, et al. Phys.Rev.Lett. 113, 063603 (2014).