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Speaker: Dr. Halima Giovanna Ahmad Date: 10 February 2022 Time: 16:00 - 17:00 GMT (17:00 - 18:00 CET)
Title: Boosting Superconducting Electronics with the Josephson Effect: Towards Hybrid Quantum Circuits and RF-applications
Abstract: Since its first discovery in the early ‘60s, the Josephson effect has been a powerful tool to study the fundamental physics occurring in conventional and unconventional superconducting materials and the exotic phenomena arising when coupling superconductors with barriers far from simple insulators or metals [1]. However, Josephson junctions are not just a laboratory platform. The research community has already demonstrated that they can enhance the capabilities of superconducting electronics in real-world applications: from highly sensitive magnetometry to quantum metrology and from quantum detection to quantum computation [2]. In this talk, we will specifically focus on the possibility of building a hybrid classical/quantum superconducting platform for high-performance computing by exploiting unconventional Josephson junctions that use ferromagnetic tunnel barriers (tunnel-SFS JJs) [3-7]. Tunnel SFS JJs have the potential of enlarging the capabilities of current state-of-the-art superconducting electronics [8-12]. The high quality of tunnel JJs adds to the chance to tune the magnetization of the ferromagnetic barrier. We show that this allows setting up a convenient playground for novel control, read-out, and memorization mechanisms. [1] A. Barone and G. Paternò, John Wiley & Sons, Inc. 9780471014690 (1982). [2] F. Tafuri, Vol. 286. Springer Nature, (2019). [3] K. Senapati, et al., Nature Materials, 849 (2011). [4] A. Pal, et al., Nature Communications, 3340 (2014). [5] R. Caruso, et al., Phys. Rev. Lett. 122, 047002 (2019). [6] R. Satariano, et al., Phys. Rev. B 103, 224521 (2020). [7] Ahmad, H. G., et al., arXiv preprint arXiv:2106.15646 (2021). [8] D. Massarotti, et al., Nature Communications, 7376 (2015). [9] H.G. Ahmad, et al., Phys. Rev. Applied 13, 014017 (2020). [10] R. Caruso, et al., Journal of Applied Physics, 123 (2018). [11] Loredana Parlato, et al., Journal of Applied Physics 127, 193901 (2020). [12] H.G. Ahmad et al., submitted paper (2021).
*Speaker/applicant must be a Young Professional and a member of the IEEE Council of Superconductivity (CSC).
For questions, please email the IEEE CSC Operations Manager.