Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Lisenfeld, Jürgen"'
Autor:
Lenschen, Jakob, Labbe, Rosalie, Drotleff, Nils, Fuhrmann, Markus, Lisenfeld, Jürgen, Rotzinger, Hannes, Ustinov, Alexey V.
We proposed and tested a cryogenic setup comprising dielectric waveguides for mm-wave frequencies in the range of 75-110 GHz and temperatures down to 10 mK. The targeted applications are quantum technologies at millimeter-wave frequencies, which requ
Externí odkaz:
http://arxiv.org/abs/2411.15058
Autor:
Kristen, Maximilian, Voss, Jan Nicolas, Wildermuth, Micha, Bilmes, Alexander, Lisenfeld, Jürgen, Rotzinger, Hannes, Ustinov, Alexey V.
Disordered thin films are a common choice of material for superconducting, high impedance circuits used in quantum information or particle detector physics. A wide selection of materials with different levels of granularity are available, but, despit
Externí odkaz:
http://arxiv.org/abs/2307.09078
Publikováno v:
npj Quantum information 9, 8 (2023)
In the endeavour to make quantum computers a reality, integrated superconducting circuits have become a promising architecture. A major challenge of this approach is decoherence originating from spurious atomic tunneling defects at the interfaces of
Externí odkaz:
http://arxiv.org/abs/2208.01570
Tunneling defects in disordered materials form spurious two-level systems which are a major source of decoherence for micro-fabricated quantum devices. For superconducting qubits, defects in tunnel barriers of submicrometer-sized Josephson junctions
Externí odkaz:
http://arxiv.org/abs/2108.06555
Autor:
Bilmes, Alexander, Händel, Alexander K., Volosheniuk, Serhii, Ustinov, Alexey V., Lisenfeld, Jürgen
Shadow evaporation is commonly used to micro-fabricate the key element of superconducting qubits - the Josephson junction. However, in conventional two-angle deposition circuit topology, unwanted stray Josephson junctions are created which contribute
Externí odkaz:
http://arxiv.org/abs/2101.01453
Publikováno v:
npj Quantum Inf 7, 27 (2021)
The anomalous low-temperature properties of glasses arise from intrinsic excitable entities, so-called tunneling Two-Level-Systems (TLS), whose microscopic nature has been baffling solid-state physicists for decades. TLS have become particularly impo
Externí odkaz:
http://arxiv.org/abs/2011.14327
Autor:
Bilmes, Alexander, Megrant, Anthony, Klimov, Paul, Weiss, Georg, Martinis, John M., Ustinov, Alexey V., Lisenfeld, Jürgen
Solid-state quantum coherent devices are quickly progressing. Superconducting circuits, for instance, have already been used to demonstrate prototype quantum processors comprising a few tens of quantum bits. This development also revealed that a majo
Externí odkaz:
http://arxiv.org/abs/1911.08246
Autor:
Lisenfeld, Jürgen, Bilmes, Alexander, Megrant, Anthony, Barends, Rami, Kelly, Julian, Klimov, Paul, Weiss, Georg, Martinis, John M., Ustinov, Alexey V.
Publikováno v:
npj Quantum Information 5, 105 (2019)
Superconducting integrated circuits have demonstrated a tremendous potential to realize integrated quantum computing processors. However, the downside of the solid-state approach is that superconducting qubits suffer strongly from energy dissipation
Externí odkaz:
http://arxiv.org/abs/1909.09749
Autor:
Matityahu, Shlomi, Schmidt, Hartmut, Bilmes, Alexander, Shnirman, Alexander, Weiss, Georg, Ustinov, Alexey V., Schechter, Moshe, Lisenfeld, Jürgen
Publikováno v:
npj Quantum Inf 5, 114 (2019)
Increasing and stabilizing the coherence of superconducting quantum circuits and resonators is of utmost importance for various technologies ranging from quantum information processors to highly sensitive detectors of low-temperature radiation in ast
Externí odkaz:
http://arxiv.org/abs/1903.07914
Autor:
Schlör, Steffen, Lisenfeld, Jürgen, Müller, Clemens, Bilmes, Alexander, Schneider, Andre, Pappas, David P., Ustinov, Alexey V., Weides, Martin
Publikováno v:
Phys. Rev. Lett. 123, 190502 (2019)
We report on long-term measurements of a highly coherent, non-tunable superconducting transmon qubit, revealing low-frequency burst noise in coherence times and qubit transition frequency. We achieve this through a simultaneous measurement of the qub
Externí odkaz:
http://arxiv.org/abs/1901.05352