Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Kubatkin, S. E."'
Autor:
Hegedüs, M., Banerjee, R., Hutcheson, A., Barker, T., Mahashabde, S., Danilov, A. V., Kubatkin, S. E., Antonov, V., de Graaf, S. E.
The low temperature physics of structurally amorphous materials is governed by two-level system defects (TLS), the exact origin and nature of which remain elusive despite decades of study. Recent advances towards realising stable high-coherence platf
Externí odkaz:
http://arxiv.org/abs/2408.16660
Autor:
Lucas, M., Danilov, A. V., Levitin, L. V., Jayaraman, A., Casey, A. J., Faoro, L., Tzalenchuk, A. Ya., Kubatkin, S. E., Saunders, J., de Graaf, S. E.
Publikováno v:
Nature Communications 14, 3522 (2023)
Quantum circuits interact with the environment via several temperature-dependent degrees of freedom. Yet, multiple experiments to-date have shown that most properties of superconducting devices appear to plateau out at $T\approx 50$ mK -- far above t
Externí odkaz:
http://arxiv.org/abs/2210.03816
Autor:
Ranjan, V., Wen, Y., Keyser, A. K. V., Kubatkin, S. E., Danilov, A. V., Lindström, T., Bertet, P., de Graaf, S. E.
The ability to control microwave emission from a spin ensemble is a requirement of several quantum memory protocols. Here, we demonstrate such ability by using a resonator whose frequency can be rapidly tuned with a bias current. We store excitations
Externí odkaz:
http://arxiv.org/abs/2206.04488
Autor:
de Graaf, S. E., Faoro, L., Ioffe, L. B., Mahashabde, S., Burnett, J. J., Lindström, T., Kubatkin, S. E., Danilov, A. V., Tzalenchuk, A. Ya.
Publikováno v:
Science Advances, 6, eabc5055 (2020)
A major issue for the implementation of large scale superconducting quantum circuits is the interaction with interfacial two-level system defects (TLS) that leads to qubit relaxation and impedes qubit operation in certain frequency ranges that also d
Externí odkaz:
http://arxiv.org/abs/2004.02485
Autor:
Geaney, S., Cox, D., Hönigl-Decrinis, T., Shaikhaidarov, R., Kubatkin, S. E., Lindström, T., Danilov, A. V., de Graaf, S. E.
The microwave properties of nano-scale structures are important in a wide variety of applications in quantum technology. Here we describe a low-power cryogenic near-field scanning microwave microscope (NSMM) which maintains nano-scale dielectric cont
Externí odkaz:
http://arxiv.org/abs/1902.08066
Autor:
de Graaf, S. E., Faoro, L., Burnett, J., Adamyan, A. A., Tzalenchuk, A. Ya., Kubatkin, S. E., Lindström, T., Danilov, A. V.
Publikováno v:
Nature Communications, 9:1143 (2018)
Noise and decoherence due to spurious two-level systems (TLS) located at material interfaces is a long-standing issue in solid state quantum technologies. Efforts to mitigate the effects of TLS have been hampered by a lack of surface analysis tools s
Externí odkaz:
http://arxiv.org/abs/1705.09158
Akademický článek
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Autor:
de Graaf, S. E., Adamyan, A. A., Lindström, T., Erts, D., Kubatkin, S. E., Tzalenchuk, A. Ya., Danilov, A. V.
Publikováno v:
Phys. Rev. Lett. 118, 057703 (2017)
It is universally accepted that noise and decoherence affecting the performance of superconducting quantum circuits are consistent with the presence of spurious two-level systems (TLS). In recent years bulk defects have been generally ruled out as th
Externí odkaz:
http://arxiv.org/abs/1609.04562
Autor:
Wisby, I. S., de Graaf, S. E., Gwilliam, R., Adamyan, A., Kubatkin, S. E., Meeson, P. J., Tzalenchuk, A. Ya., Lindström, T.
Publikováno v:
Phys. Rev. Applied 6, 024021 (2016)
Interfacing rare-earth doped crystals with superconducting circuit architectures provides an attractive platform for quantum memory and transducer devices. Here we present the detailed characterization of such a hybrid system: a locally implanted rar
Externí odkaz:
http://arxiv.org/abs/1512.02270
Publikováno v:
Rev. Sci. Instrum. 84, 023706 (2013)
We report on the design and performance of a cryogenic (300 mK) near-field scanning microwave microscope. It uses a microwave resonator as the near-field sensor, operating at a frequency of 6 GHz and microwave probing amplitudes down to 100 uV, appro
Externí odkaz:
http://arxiv.org/abs/1404.0534