Apparent nonlinear damping triggered by quantum fluctuations
arXiv:2104.06464 · doi:10.1038/s41467-023-43128-y
Abstract
Nonlinear damping, the change in damping rate with the amplitude of oscillations plays an important role in many electrical, mechanical and even biological oscillators. In novel technologies such as carbon nanotubes, graphene membranes or superconducting resonators, the origin of nonlinear damping is sometimes unclear. This presents a problem, as the damping rate is a key figure of merit in the application of these systems to extremely precise sensors or quantum computers. Through measurements of a superconducting resonator, we show that from the interplay of quantum fluctuations and the nonlinearity of a Josephson junction emerges a power-dependence in the resonator response which closely resembles nonlinear damping. The phenomenon can be understood and visualized through the flow of quasi-probability in phase space where it reveals itself as dephasing. Crucially, the effect is not restricted to superconducting circuits: we expect that quantum fluctuations or other sources of noise give rise to apparent nonlinear damping in systems with a similar conservative nonlinearity, such as nano-mechanical oscillators or even macroscopic systems.
References in corpus (30)
- SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
- Supplementary information for "Quantum supremacy using a programmable superconducting processor"
- Charge insensitive qubit design derived from the Cooper pair box
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- QuTiP: An open-source Python framework for the dynamics of open quantum systems
- Circuit Quantum Electrodynamics
- A Mechanical Mass Sensor with Yoctogram Resolution
- Nonlinear damping in mechanical resonators based on graphene and carbon nanotubes
- Observation of quantum jumps in a superconducting artificial atom
- Experimental evidence for a surface distribution of two-level systems in superconducting lithographed microwave resonators
- A widely tunable parametric amplifier based on a SQUID array resonator
- Surface participation and dielectric loss in superconducting qubits
- Introduction to Quantum Electromagnetic Circuits
- Microwave Dielectric Loss at Single Photon Energies and milliKelvin Temperatures
- Noise Properties of Superconducting Coplanar Waveguide Microwave Resonators
- Mass Detection with Nonlinear Nanomechanical Resonator
- Wigner Function Evolution of Quantum States in Presence of Self-Kerr Interaction
- Symmetry breaking in a mechanical resonator made from a carbon nanotube
- Quantum heating of a parametrically modulated oscillator: spectral signatures
- Giant resonant nonlinear damping in nanoscale ferromagnets
- Negative nonlinear damping of a graphene mechanical resonator
- QuCAT: Quantum Circuit Analyzer Tool in Python
- Phase Space Representation for Open Quantum Systems within the Lindblad Theory
- Nonlinear damping and dephasing in nanomechanical systems
- Non-linear Frequency Transduction of Nano-mechanical Brownian Motion
- Strong negative nonlinear friction from induced two-phonon processes in vibrational systems
- The Wigner Current for Open Quantum Systems
- Self-Consistent Projection Operator Theory in Nonlinear Quantum Optical Systems: A case study on Degenerate Optical Parametric Oscillators
- Quantum Kerr oscillators' evolution in phase space: Wigner current, symmetries, shear suppression and special states
- Mechanical dissipation in MoRe superconducting metal drums