Probing Two-Dimensional Quantum Fluids with Cavity Optomechanics

✍ Scribed by Yauhen Sachkou

Publisher: Springer International Publishing;Springer
Year: 2020
Tongue: English
Leaves: 161
Series: Springer Theses
Edition: 1st ed.
Category: Library

No coin nor oath required. For personal study only.

✦ Synopsis

Superfluid helium is a quantum liquid that exhibits a range of counter-intuitive phenomena such as frictionless flow. Quantized vortices are a particularly important feature of superfluid helium, and all superfluids, characterized by a circulation that can only take prescribed integer values. However, the strong interactions between atoms in superfluid helium prohibit quantitative theory of vortex behaviour. Experiments have similarly not been able to observe coherent vortex dynamics.
This thesis resolves this challenge, bringing microphotonic techniques to bear on two-dimensional superfluid helium, observing coherent vortex dynamics for the first time, and achieving this on a silicon chip. This represents a major scientific contribution, as it opens the door not only to providing a better understanding of this esoteric quantum state of matter, but also to building new quantum technologies based upon it, and to understanding the dynamics of astrophysical superfluids such as those thought to exist in the core of neutron stars.

✦ Table of Contents

Front Matter ....Pages i-xxi
Introduction and Overview (Yauhen Sachkou)....Pages 1-24
Optomechanical Platform for Probing Two-Dimensional Quantum Fluids (Yauhen Sachkou)....Pages 25-53
Light-Mediated Control of Superfluid Flow (Yauhen Sachkou)....Pages 55-74
Theoretical Investigation of Vortex-Sound Interactions in Two-Dimensional Superfluids (Yauhen Sachkou)....Pages 75-99
Observation of Coherent Vortex Dynamics in Two-Dimensional Superfluid Helium (Yauhen Sachkou)....Pages 101-138
Conclusion (Yauhen Sachkou)....Pages 139-141
Back Matter ....Pages 143-147

✦ Subjects

Physics; Condensed Matter Physics; Quantum Physics; Chemistry/Food Science, general; Materials Science, general

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