A5029928746- Mechanical and Optical Resonators
- Quantum Information and Cryptography
- Quantum many-body systems
- Photonic and Optical Devices
- Nonlinear Dynamics and Pattern Formation
- Quantum Computing Algorithms and Architecture
- Neural Networks and Reservoir Computing
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Fiber Laser Technologies
- stochastic dynamics and bifurcation
- Microtubule and mitosis dynamics
- Acoustic Wave Phenomena Research
- Quantum chaos and dynamical systems
- Theoretical and Computational Physics
- Seismic Imaging and Inversion Techniques
ETH Zurich
2022-2024
Networks of coupled Kerr parametric oscillators (KPOs) are a leading physical platform for analog solving complex optimization problems. These systems colloquially known as ``Ising machines.'' We experimentally and theoretically study such network under the influence an external force. The force breaks collective phase-parity symmetry system competes with intrinsic coupling in ordering configuration, similar to how magnetic field biases interacting spin ensemble. Specifically, we demonstrate...
Researchers experimentally test various protocols for finding the most stable state of two coupled Kerr parametric oscillators. The result can help in endeavor to use such networks as simulation hardware solving complex optimization problems.
The Kerr Parametric Oscillator (KPO) is a nonlinear resonator system that often described as synthetic two-level system. In the presence of noise, switches between two states via fluctuating trajectory in phase space, instead following straight path. such trajectories makes it hard to establish precise count or even useful definition, “lifetime” state. Addressing this issue, we compare several rate counting methods allow estimate lifetime for levels. particular, peak Allan variance...
Many experimental techniques aim at determining the Hamiltonian of a given system. The describes system's evolution in absence dissipation, and is often central to control or interpret an experiment. Here, we theoretically propose experimentally demonstrate method for reconstruction from measurements over large area phase space, overcoming main limitation previous techniques. A crucial ingredient our presence which enables sampling through ringdown-type measurements. We apply...
The combination of a strong pump and weak probe has been widely applied to investigate both optical nanomechanical devices. Such pump-probe measurements allows for the exploration nonlinear dynamics, driven by large tone, measuring system response tone. In contrast, here we report on dynamics mechanical Duffing resonator with two tones at different frequencies. Our results indicate presence various distinct regimes very dynamics. We systematically impact relative strength detuning between...
Many experimental techniques aim at determining the energy landscape of a system given and compare it to model Hamiltonian. This governs system's evolution in absence dissipation. Here, we theoretically propose experimentally demonstrate method measure without knowing its functional form. A crucial ingredient for our is presence dissipation, which enables sampling over large area phase space through ringdown-type measurements, overcoming main limitation previous techniques. We apply...
The vision of building computational hardware for problem optimization has spurred large efforts in the physics community. In particular, networks Kerr parametric oscillators (KPOs) are envisioned as simulators finding ground states Ising Hamiltonians. It was shown, however, that KPO can feature numbers unexpected solutions difficult to sample with existing deterministic (i.e., adiabatic) protocols. this work, we experimentally realize a system two classical coupled KPOs, and find good...
Networks of coupled Kerr parametric oscillators (KPOs) are a leading physical platform for analog solving complex optimization problems. These systems colloquially known as ``Ising machines''. We experimentally and theoretically study such network under the influence an external force. The force breaks collective phase-parity symmetry system competes with intrinsic coupling in ordering configuration, similar to how magnetic field biases interacting spin ensemble. Specifically, we demonstrate...