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Spin vortex dynamics in a ferromagnetic superfluid. Magnetic spin vortices are stable whirlpool-like objects that can spontaneously form when magnetic materials are rapidly cooled. This project aims to understand and manipulate spin vortices in a magnetic quantum fluid, one of the cleanest and most controllable magnetic systems. The significance is that spin vortices are potentially fundamental elements of future electronic technologies for advanced storage and logic. The expected outcomes are ....Spin vortex dynamics in a ferromagnetic superfluid. Magnetic spin vortices are stable whirlpool-like objects that can spontaneously form when magnetic materials are rapidly cooled. This project aims to understand and manipulate spin vortices in a magnetic quantum fluid, one of the cleanest and most controllable magnetic systems. The significance is that spin vortices are potentially fundamental elements of future electronic technologies for advanced storage and logic. The expected outcomes are the ability to create spin vortices on demand, and the characterisation of their suitability for future applications. The benefit is an improved fundamental knowledge of spin vortices, and laying the groundwork for the use of magnetic structures in future spin-based electronics.Read moreRead less
Quantum nonlocality tests with ultracold atoms. As a fundamental test of quantum mechanics, we will measure for the first time "spooky action-at-a-distance" for macroscopically large groups of atoms. As well as establishing limits to the size of new quantum devices such as gravitational sensors, we will provide insights into the unification of quantum theory with gravity.
Nonequilibrium states of polariton superfluids. This project aims to design novel nonequilibrium states of a polariton superfluid and to identify why some are more robust than others. Polaritons are hybrid particles of light and matter that exist in thin layers of a semiconductor. At high densities they form a superfluid, exhibiting quantised whirlpools and frictionless flow. The project aims to realise these states in the laboratory and to address one of the challenges of physics: predicting an ....Nonequilibrium states of polariton superfluids. This project aims to design novel nonequilibrium states of a polariton superfluid and to identify why some are more robust than others. Polaritons are hybrid particles of light and matter that exist in thin layers of a semiconductor. At high densities they form a superfluid, exhibiting quantised whirlpools and frictionless flow. The project aims to realise these states in the laboratory and to address one of the challenges of physics: predicting and controlling the emergent properties of materials far from equilibrium. The anticipated outcome is the generation of fundamental knowledge that could be used to guide the design of polaritonic devices such as novel optoelectronic devices for emitting and controlling light.Read moreRead less
Fundamental tests of quantum mechanics with ultracold atomic gases. The project seeks to make a breakthrough in our understanding of quantum 'entanglement' in large-scale systems of massive particles. Such systems can revolutionise precision measurement and lead to new quantum devices for gravitational and inertial sensing. The project will help position Australia among the world leaders in these developments.
Riding a quantum wave: transport and flow of atomic quantum fluids. This project intends to characterise and engineer the fundamental transport properties of atomic superfluids. Lasers and magnetic fields can be used to cool tiny samples of millions of atoms to temperatures a few billionths of a degree above absolute zero. At such cold temperatures they form a superfluid known as a Bose–Einstein condensate, which flows with zero viscosity. Using tailored light fields to trap and guide the atoms, ....Riding a quantum wave: transport and flow of atomic quantum fluids. This project intends to characterise and engineer the fundamental transport properties of atomic superfluids. Lasers and magnetic fields can be used to cool tiny samples of millions of atoms to temperatures a few billionths of a degree above absolute zero. At such cold temperatures they form a superfluid known as a Bose–Einstein condensate, which flows with zero viscosity. Using tailored light fields to trap and guide the atoms, this project plans to build rudimentary atomic circuits and coax the superfluid to flow through a channel between two reservoirs, firstly with thermodynamic gradients, and secondly by building a quantum pump. Together with computer modelling, this would allow us to characterise the microscopic transport properties of superfluids and provide us with an understanding of how to use them in atomtronic devices in the future.Read moreRead less
Quantum matter far-from-equilibrium. The project aims to develop stochastic quantum hydrodynamics, a theoretical approach to understand non-equilibrium dynamics of quantum fluids and superfluids formed by ultra-cold atomic gases. How quantum matter evolves when driven far-from-equilibrium is a problem for basic energy sciences, and in understanding systems ranging from cold fusion reactors to the early inflationary universe. The project intends to better understand the organising principles of n ....Quantum matter far-from-equilibrium. The project aims to develop stochastic quantum hydrodynamics, a theoretical approach to understand non-equilibrium dynamics of quantum fluids and superfluids formed by ultra-cold atomic gases. How quantum matter evolves when driven far-from-equilibrium is a problem for basic energy sciences, and in understanding systems ranging from cold fusion reactors to the early inflationary universe. The project intends to better understand the organising principles of non-equilibrium quantum states. This will influence emerging quantum technologies, including atomtronics, dynamical quantum emulators, energy-efficient materials and materials with new, unforeseen functionalities.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE130100575
Funder
Australian Research Council
Funding Amount
$373,944.00
Summary
Quantum enhancement for ultra-precise atomic sensors. This project will investigate methods for drastically improving the sensitivity of measurement devices derived from atom interferometers. This will enable experimental tests of certain aspects of fundamental physics, as well as practical tools such as ultra-precise geodesy for minerals exploration.
Manufacturing, controlling, manipulating and measuring continuous-variable quantum entanglement. Quantum entanglement is a feature of the quantum world which results in objects, which once interacted, remain interlinked even when separated by vast distances. We are approaching the stage where this so-called "spooky action at a distance" will be technologically useful. This project aims to place Australia at the front of quantum entanglement research.
Discovery Early Career Researcher Award - Grant ID: DE220101548
Funder
Australian Research Council
Funding Amount
$415,000.00
Summary
Calming the Superfluid Storm: Taming Turbulence in Superfluid Devices. Turbulence, the chaotic flow of fluids, occurs in the vast majority of fluid flows in nature. This project aims to develop a new understanding of turbulence in superfluids, a class of quantum fluids which can flow without friction. The significance is that aspects of turbulence are universal, so that discoveries in superfluid turbulence will provide fundamental insights into all forms of turbulence. The expected outcomes are ....Calming the Superfluid Storm: Taming Turbulence in Superfluid Devices. Turbulence, the chaotic flow of fluids, occurs in the vast majority of fluid flows in nature. This project aims to develop a new understanding of turbulence in superfluids, a class of quantum fluids which can flow without friction. The significance is that aspects of turbulence are universal, so that discoveries in superfluid turbulence will provide fundamental insights into all forms of turbulence. The expected outcomes are solutions to two outstanding questions – what are the universal laws of turbulent flow for superfluids, and what new forms of quantum vortex matter are possible? New insights into turbulence will benefit all applications which rely on its understanding, for example in medicine, aviation, and climate modelling.Read moreRead less
Advanced Quantum Sensors for Next-Generation Sensing Applications. The aim of this theoretical physics project is to develop ultra-precise sensing capabilities for two main applications: ultrastable inertial sensors for improved navigation and gravimetry, and to search for signatures of quantum gravity. This project expects to improve the performance of quantum sensors via the use of machine optimisation, and may lead to much-needed experimental data to help guide one of the most challenging pro ....Advanced Quantum Sensors for Next-Generation Sensing Applications. The aim of this theoretical physics project is to develop ultra-precise sensing capabilities for two main applications: ultrastable inertial sensors for improved navigation and gravimetry, and to search for signatures of quantum gravity. This project expects to improve the performance of quantum sensors via the use of machine optimisation, and may lead to much-needed experimental data to help guide one of the most challenging problems in theoretical physics: the quantisation of gravity. The expected outcomes of this project are enhanced quantum sensor design, leading to improved inertial sensing technology. This should provide benefits such as improved capabilities for minerals exploration and monitoring the movement of ground water.Read moreRead less