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Polarons in flatland. This project aims to generate new theories of excitons (the solid-state analogue of hydrogen atoms) in charge-doped atomically thin semiconductors. Such theories are urgently needed to describe the response to external probes, such as electric fields, of a range of novel materials that have emerged in recent years. The novelty is to treat the behaviour of semiconductors as a quantum impurity problem, where the excitons become modified by the surrounding electrons to form ne ....Polarons in flatland. This project aims to generate new theories of excitons (the solid-state analogue of hydrogen atoms) in charge-doped atomically thin semiconductors. Such theories are urgently needed to describe the response to external probes, such as electric fields, of a range of novel materials that have emerged in recent years. The novelty is to treat the behaviour of semiconductors as a quantum impurity problem, where the excitons become modified by the surrounding electrons to form new types of particles. A greater understanding of the impurity problem in 2D materials would ultimately facilitate their use in emerging technologies that combine electronics with photonics, for use in ultra-low-power devices such as photodectectors, LEDs, and lasers.Read moreRead less
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
Discovery Early Career Researcher Award - Grant ID: DE180100592
Funder
Australian Research Council
Funding Amount
$343,450.00
Summary
Many-body localization characterized from a few-body perspective. This project aims to understand the quantum phenomenon of many-body localization, by studying novel theoretical models from an innovative, few-body perspective. The project expects to advance our knowledge in this new frontier of quantum statistical mechanics and to design realistic experimental protocols for observation and manipulation, especially on ultracold quantum-gasplatforms. Expected outcomes of this project include appli ....Many-body localization characterized from a few-body perspective. This project aims to understand the quantum phenomenon of many-body localization, by studying novel theoretical models from an innovative, few-body perspective. The project expects to advance our knowledge in this new frontier of quantum statistical mechanics and to design realistic experimental protocols for observation and manipulation, especially on ultracold quantum-gasplatforms. Expected outcomes of this project include applications in quantum information storage, which expects to enhance Australia's research strength in quantum computation.Read moreRead less
A few-body perspective on polaron physics and polaron interactions. This project aims to develop novel approaches to investigate one of the most celebrated quasiparticles, polarons, and polaron interactions, which plays a critical role in understanding the properties and functionalities of various advanced materials. However, the complexity of real materials poses challenges to a fundamental understanding. This project innovatively applies the clean and controllable cold-atom system to simulate ....A few-body perspective on polaron physics and polaron interactions. This project aims to develop novel approaches to investigate one of the most celebrated quasiparticles, polarons, and polaron interactions, which plays a critical role in understanding the properties and functionalities of various advanced materials. However, the complexity of real materials poses challenges to a fundamental understanding. This project innovatively applies the clean and controllable cold-atom system to simulate the same physics, where an innovative integration of few-body formalisms will be developed and precisely tested. The new knowledge generated in this project expects to shed new insight into polaron physics and pave the way to engineer polaron-based materials for applications in emergent quantum technologies.
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Topological reaction dynamics in planar superfluids. This project aims to investigate novel correlated behaviours in two-dimensional superfluids. The project expects to generate new knowledge in the inter-linked areas of quantum turbulence and topological quantum computing with vortices in two-dimensional superfluids by combining innovative computational techniques and collaborative approaches. Expected outcomes include the uncovering of exotic reaction dynamics and vortex states of topological ....Topological reaction dynamics in planar superfluids. This project aims to investigate novel correlated behaviours in two-dimensional superfluids. The project expects to generate new knowledge in the inter-linked areas of quantum turbulence and topological quantum computing with vortices in two-dimensional superfluids by combining innovative computational techniques and collaborative approaches. Expected outcomes include the uncovering of exotic reaction dynamics and vortex states of topological quantum matter. This project will enhance Australia's research capacity in two-dimensional superfluids and will provide further benefits that include training of students in advanced computational and technical disciplines.Read moreRead less
Many body correlations in a Bose Fermi gas. This project aims to create a degenerate Fermi gas of metastable helium atoms to study some basic properties of elementary quantum systems. The unique properties of helium provide access to observe many-body correlation functions. Expected outcomes are a new demonstration of the Pauli exclusion principle, where no two Fermions can be in the same location, and revealing the fundamental correlations that underlie many-body quantum systems. Correlations b ....Many body correlations in a Bose Fermi gas. This project aims to create a degenerate Fermi gas of metastable helium atoms to study some basic properties of elementary quantum systems. The unique properties of helium provide access to observe many-body correlation functions. Expected outcomes are a new demonstration of the Pauli exclusion principle, where no two Fermions can be in the same location, and revealing the fundamental correlations that underlie many-body quantum systems. Correlations between Fermions underpin many effects in physics, such as high temperature superconductivity and quantum magnetism. This knowledge will have an influence on the development of new quantum technologies, such as quantum computers.Read moreRead less
Making Strongly Interacting Photons. This theoretical project aims to investigate strongly correlated polaritons in quantum physics. Known as quantum fluids of light, polaritons are half-light, half-matter particles exhibiting frictionless, zero-energy-cost flows, an astonishing quantum behaviour known as superfluidity. This project expects to make a breakthrough in our understanding of polaritons in the strongly interacting regime far from equilibrium and fill in the knowledge gap towards the r ....Making Strongly Interacting Photons. This theoretical project aims to investigate strongly correlated polaritons in quantum physics. Known as quantum fluids of light, polaritons are half-light, half-matter particles exhibiting frictionless, zero-energy-cost flows, an astonishing quantum behaviour known as superfluidity. This project expects to make a breakthrough in our understanding of polaritons in the strongly interacting regime far from equilibrium and fill in the knowledge gap towards the realisation of a superfluid of light at room temperature. This should open a new era of quantum polaritonics that forms the basis for energy-efficient laser and all-optical transistor, establishing Australia as a world leader in commercialising novel photonic technologies.Read moreRead less
Quantum non-locality with mass-entangled metastable helium atoms atoms. The aim of this project is to use ultracold helium atoms to test aspects of quantum entanglement. The unique properties of metastable helium will provide significant new knowledge of this fundamental quantum property. Expected outcomes include measuring a Bell test between mass entangled atoms and testing the weak equivalence principle (the universality of free fall) using a quantum entangled state as the test masses. This s ....Quantum non-locality with mass-entangled metastable helium atoms atoms. The aim of this project is to use ultracold helium atoms to test aspects of quantum entanglement. The unique properties of metastable helium will provide significant new knowledge of this fundamental quantum property. Expected outcomes include measuring a Bell test between mass entangled atoms and testing the weak equivalence principle (the universality of free fall) using a quantum entangled state as the test masses. This should provide benefits including input into new theories that attempt to unify quantum mechanics with general relativity and will be relevant for emerging quantum technologies such as more powerful quantum computing or quantum simulation of complex systems.Read moreRead less
Quantum entanglement with atoms: from individual pairs to many-body systems. The aim of this project is to use ultracold helium atoms to test aspects of quantum entanglement. The unique properties of metastable helium will provide significant new knowledge of this fundamental quantum property. Expected outcomes include measuring a Bell test between momentum entangled atoms and showing how many-body entanglement builds up following a quantum quench. This should provide benefits including new theo ....Quantum entanglement with atoms: from individual pairs to many-body systems. The aim of this project is to use ultracold helium atoms to test aspects of quantum entanglement. The unique properties of metastable helium will provide significant new knowledge of this fundamental quantum property. Expected outcomes include measuring a Bell test between momentum entangled atoms and showing how many-body entanglement builds up following a quantum quench. This should provide benefits including new theories that attempt to unify quantum mechanics with general relativity and will be relevant for emerging quantum technologies such as more powerful quantum computing or quantum simulation of complex systems. Read moreRead less
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