Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Arndt, Lisa"'
Autor:
Kölzer, Jonas, Jalil, Abdur Rehman, Rosenbach, Daniel, Arndt, Lisa, Mussler, Gregor, Schüffelgen, Peter, Grützmacher, Detlev, Lüth, Hans, Schäpers, Thomas
In an in-situ prepared three-terminal Josephson junction based on the topological insulator Bi$_4$Te$_3$ and the superconductor Nb the transport properties are studied. The differential resistance maps as a function of two bias currents reveal extend
Externí odkaz:
http://arxiv.org/abs/2301.01115
Publikováno v:
SciPost Phys. 14, 156 (2023)
As a function of the driving strength, a degenerate parametric oscillator exhibits an instability at which spontaneous oscillations occur. Close to threshold, both the nonlinearity as well as fluctuations are vital to the accurate description of the
Externí odkaz:
http://arxiv.org/abs/2208.14886
Autor:
Arndt, Lisa, Hassler, Fabian
Publikováno v:
Phys. Rev. B 106, 014513 (2022)
Parametrically driven oscillators can display period-tripling in response to a drive at thrice the resonance frequency. In contrast to the parametric instability for period doubling, the symmetric fixed-point corresponding to the state of rest remain
Externí odkaz:
http://arxiv.org/abs/2204.12210
Autor:
Arndt, Lisa, Hassler, Fabian
Publikováno v:
Phys. Rev. Lett. 128, 187701 (2022)
Discrete time-translation symmetry breaking can be observed in periodically-driven systems oscillating at a fraction of the frequency of the driving force. However, with the exception of the parametric instability in period-doubling, multi-periodic d
Externí odkaz:
http://arxiv.org/abs/2111.06202
Autor:
Arndt, Lisa, Hassler, Fabian
Publikováno v:
Phys. Rev. A 103, 023506 (2021)
At a bifurcation point, a small change of a parameter causes a qualitative change in the system. Quantum fluctuations wash out this abrupt transition and enable the emission of quantized energy, which we term photons, below the classical bifurcation
Externí odkaz:
http://arxiv.org/abs/2009.01063
Autor:
Arndt, Lisa, Hassler, Fabian
Publikováno v:
Phys. Rev. B 100, 014505 (2019)
In a process called parametric down-conversion, a dc-biased Josephson junction coupled to two microwave resonators emits photon pairs when the Josephson frequency matches the sum of the two resonance frequencies. Recent experiments have shown that su
Externí odkaz:
http://arxiv.org/abs/1903.11529
Publikováno v:
Phys. Rev. B 98, 014525 (2018)
Bloch oscillations in a single Josephson junction in the phase-slip regime relate current to frequency. They can be measured by applying a periodic drive to a DC-biased, small Josephson junction. Phase-locking between the periodic drive and the Bloch
Externí odkaz:
http://arxiv.org/abs/1802.08123
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