Publications related to Harmonic oscillator

Accurate Description of Nuclear Quantum Effects with High-Order Perturbed Path Integrals (HOPPI)

Imaginary time path-integral (PI) simulations that account for nuclear quantum effects (NQE) beyond the harmonic approximation are increasingly employed together with modern electronic-structure calculations. Existing PI methods are applicable to molecules ...

AMER CHEMICAL SOC2020

Design of a Flexure Based Low Frequency Foucault Pendulum

Simon Nessim Henein, Ilan Vardi, Patrick Robert Flückiger

The Foucault pendulum is a well-known mechanism used to demonstrate the rotation of the Earth. It consists in a pendulum launched on linear orbits and, following Mach’s Principle, this line of oscillation will remain fixed with respect to absolute space bu ...

2020

Transition from Exponentially Damped to Finite-Time Arrest Liquid Oscillations Induced by Contact Line Hysteresis

François Gallaire, Benjamin Jérémy Dollet, Elise Flore Céline Lorenceau

To clarify the role of wetting properties on the damping of liquid oscillations, we studied the decay of oscillations of liquid columns in a U-shaped tube with controlled surface conditions. In the presence of sliding triple lines, oscillations are strongl ...

AMER PHYSICAL SOC2020

Dynamic force coefficients identification on air-lubricated herringbone grooved journal bearing

Jürg Alexander Schiffmann, Eliott Philippe Guenat

The Narrow Groove Theory (NGT) is commonly used to simulate and design grooved gas bearing. However, measurements of dynamic force coefficients of Herringbone Grooved Journal Bearings (HGJBs) is missing, hence the validation historic NGT has never been per ...

2020

Optical backaction-evading measurement of a mechanical oscillator

Tobias Kippenberg, Liu Qiu, Itay Shomroni

Quantum mechanics imposes a limit on the precision of a continuous position measurement of a harmonic oscillator, due to backaction arising from quantum fluctuations in the measurement field. This standard quantum limit can be surpassed by monitoring only ...

Springer2019

Two-Tone Optomechanical Instability and Its Fundamental Implications for Backaction-Evading Measurements

Tobias Kippenberg, Amir Youssefi, Liu Qiu, Itay Shomroni

While quantum mechanics imposes a fundamental limit on the precision of interferometric measurementsof mechanical motion due to measurement backaction, the nonlinear nature of the coupling also leads toparametric instabilities that place practical limits o ...

2019

Preparation and Decay of a Single Quantum of Vibration at Ambient Conditions

Christophe Marcel Georges Galland, Vivishek Sudhir, Mitchell David Anderson, Kilian Robert Seibold, Nils Kipfer

A single quantum of excitation of a mechanical oscillator is a textbook example of the principles of quantum physics. But mechanical oscillators, despite their pervasive presence in nature and modem technology, do not genetically exist in an excited Fock s ...

2019

Kerr Comb-based Transfer Oscillator for Ultralow Noise Photonic Microwave Synthesis

Tobias Kippenberg, Erwan Guillaume Albert Lucas

We perform optical frequency division of an ultra-stable laser by using a crystalline-based Kerr frequency comb as a transfer oscillator. We demonstrate absolute phase noise levels of -110 dBc/Hz at 200-Hz offset from a 14 GHz carrier. (C) 2019 The Author( ...

IEEE2019

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Harmonic oscillator

Accurate Description of Nuclear Quantum Effects with High-Order Perturbed Path Integrals (HOPPI)

Design of a Flexure Based Low Frequency Foucault Pendulum

Transition from Exponentially Damped to Finite-Time Arrest Liquid Oscillations Induced by Contact Line Hysteresis

Dynamic force coefficients identification on air-lubricated herringbone grooved journal bearing

Optical backaction-evading measurement of a mechanical oscillator

Multimode microwave circuit optomechanics as a platform to study coupled quantum harmonic oscillators

Two-Tone Optomechanical Instability and Its Fundamental Implications for Backaction-Evading Measurements

Preparation and Decay of a Single Quantum of Vibration at Ambient Conditions

Kerr Comb-based Transfer Oscillator for Ultralow Noise Photonic Microwave Synthesis

Eigenmode Analysis in Plasmonics: Application to Second Harmonic Generation and Electron Energy Loss Spectroscopy

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Multimode microwave circuit optomechanics as a platform to study coupled quantum harmonic oscillators

Design of a Flexure Based Low Frequency Foucault Pendulum

Kerr Comb-based Transfer Oscillator for Ultralow Noise Photonic Microwave Synthesis

Two-Tone Optomechanical Instability and Its Fundamental Implications for Backaction-Evading Measurements

Optical backaction-evading measurement of a mechanical oscillator

Accurate Description of Nuclear Quantum Effects with High-Order Perturbed Path Integrals (HOPPI)

Eigenmode Analysis in Plasmonics: Application to Second Harmonic Generation and Electron Energy Loss Spectroscopy

Transition from Exponentially Damped to Finite-Time Arrest Liquid Oscillations Induced by Contact Line Hysteresis

Dynamic force coefficients identification on air-lubricated herringbone grooved journal bearing

Preparation and Decay of a Single Quantum of Vibration at Ambient Conditions