MechE Colloquium: Parametric oscillators in the nonlinear regime
Event details
| Date | 03.12.2019 |
| Hour | 12:15 › 13:15 |
| Speaker | Prof. Oded Zilberberg, Institute for Theoretical Physics, ETH Zürich |
| Location | |
| Category | Conferences - Seminars |
Abstract:
There are numerous physical effects that rely on parametric driving to amplify, cool, squeeze or couple resonating systems. The parametric driving arises from intrinsic quadratic nonlinearities in the system or via time-dependent modulation of the resonator's eigenfrequency, which can be realized in optical, electric and mechanical systems. In the nonlinear regime the parametric system exhibits various period-doubling bifurcations into phase states. We exploit this property to address recent physical concepts, e.g., amplified sensing close to a dissipative phase transition, as well as classical and quantum many-body time crystals. Furthermore, in coupled nonlinear parametric networks, we study emergent collective behavior that strongly depends also on the topology of the network's geometry. These resulting effects are essential for harnessing such oscillator networks as directional couplers, as well as annealing simulators for optimization problems.
Bio:
Oded Zilberberg is a theoretical condensed matter physicist with broad interests and a particular affinity for collaboration with experimental groups. After studies in Israel and Switzerland (B.Sc. at Hebrew University 2001-2004, M.Sc. at Basel University 2005-2007, and Ph.D. at the Weizmann Institute 2008-2013), he moved to ETH Zurich for a PostDoc (2013-2015), joined the ABB research laboratory in Dättwil for a year
(2015-2016) and then assumed an SNF assistant professorship that he started in June 2016 at ETH Zurich, where he now leads his research group on quantum engineered systems (QUEST). The research in his group consists of three main pillars, (i) mesoscopics/quantum electronic transport, (ii) quantum simulation of matter including topology and synthetic dimensions, and (iii) parametric nonlinear phenomena.
There are numerous physical effects that rely on parametric driving to amplify, cool, squeeze or couple resonating systems. The parametric driving arises from intrinsic quadratic nonlinearities in the system or via time-dependent modulation of the resonator's eigenfrequency, which can be realized in optical, electric and mechanical systems. In the nonlinear regime the parametric system exhibits various period-doubling bifurcations into phase states. We exploit this property to address recent physical concepts, e.g., amplified sensing close to a dissipative phase transition, as well as classical and quantum many-body time crystals. Furthermore, in coupled nonlinear parametric networks, we study emergent collective behavior that strongly depends also on the topology of the network's geometry. These resulting effects are essential for harnessing such oscillator networks as directional couplers, as well as annealing simulators for optimization problems.
Bio:
Oded Zilberberg is a theoretical condensed matter physicist with broad interests and a particular affinity for collaboration with experimental groups. After studies in Israel and Switzerland (B.Sc. at Hebrew University 2001-2004, M.Sc. at Basel University 2005-2007, and Ph.D. at the Weizmann Institute 2008-2013), he moved to ETH Zurich for a PostDoc (2013-2015), joined the ABB research laboratory in Dättwil for a year
(2015-2016) and then assumed an SNF assistant professorship that he started in June 2016 at ETH Zurich, where he now leads his research group on quantum engineered systems (QUEST). The research in his group consists of three main pillars, (i) mesoscopics/quantum electronic transport, (ii) quantum simulation of matter including topology and synthetic dimensions, and (iii) parametric nonlinear phenomena.
Practical information
- General public
- Free