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Observing Einstein-Podolsky-Rosen entanglement with ultracold atomic gases. As a fundamental test of quantum mechanics, the project will demonstrate for the first time the famous Einstein-Podolsky-Rosen paradox in the regime of a macroscopic number of entangled massive particles. As well as enabling the design of new gravitational sensors, the outcomes will give insights into the unification of quantum theory with gravity.
Quantum Phase Transitions In- and Out-of-Equilibrium in Optical Lattices. This project aims to contribute to understanding the physics of quantum many-body systems. A complete understanding of phase transitions in strongly interacting quantum many-body systems is a key step towards solving several open problems in modern physics (eg high temperature superconductors). However, they are extremely difficult to study theoretically or in traditional experiments, due to the underlying strong quantum c ....Quantum Phase Transitions In- and Out-of-Equilibrium in Optical Lattices. This project aims to contribute to understanding the physics of quantum many-body systems. A complete understanding of phase transitions in strongly interacting quantum many-body systems is a key step towards solving several open problems in modern physics (eg high temperature superconductors). However, they are extremely difficult to study theoretically or in traditional experiments, due to the underlying strong quantum correlations. This project plans to take an alternative approach using ultra-cold helium atoms in an optical lattice to form an analogue quantum simulator. This would provide access to a new experimental observable: many-body correlation functions, which should yield new insights. Understanding such systems more deeply may lead to the development of new quantum technologies based on this science.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
Discovery Early Career Researcher Award - Grant ID: DE150100315
Funder
Australian Research Council
Funding Amount
$372,000.00
Summary
Quantum Simulation with Ultracold Metastable Helium in an Optical Lattice. Understanding the behaviour of electrons in a lattice has led to the development of numerous devices now taken for granted in everyday life. But there are still many open questions concerning strongly interacting electrons in a lattice, for example, an explanation of high temperature superconductivity. This is because modelling these systems is hard, due to the quantum correlations between particles, while impurities in s ....Quantum Simulation with Ultracold Metastable Helium in an Optical Lattice. Understanding the behaviour of electrons in a lattice has led to the development of numerous devices now taken for granted in everyday life. But there are still many open questions concerning strongly interacting electrons in a lattice, for example, an explanation of high temperature superconductivity. This is because modelling these systems is hard, due to the quantum correlations between particles, while impurities in solid state materials hinder experimental studies. This project aims to develop a quantum simulator using ultracold helium atoms in an optical lattice to model such systems. Correlation functions will be measured by detecting individual atoms, providing a new observable to characterise many-body lattice states.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
Propagation and properties of solitonic matterwaves in atomic metamaterials. This project aims to develop and investigate solitonic matter waves interacting with crystals of light, known as optical lattices. Using a unique apparatus, the project plans to investigate how solitonic matter waves propagate in their ground and excited states, how those matter waves interact with each other, and how we can manufacture new optical materials to obtain different, and potentially useful, new behaviour. Al ....Propagation and properties of solitonic matterwaves in atomic metamaterials. This project aims to develop and investigate solitonic matter waves interacting with crystals of light, known as optical lattices. Using a unique apparatus, the project plans to investigate how solitonic matter waves propagate in their ground and excited states, how those matter waves interact with each other, and how we can manufacture new optical materials to obtain different, and potentially useful, new behaviour. Although the proposed studies are purely fundamental in nature, the project has the potential to affect the field of quantum sensors, where solitonic matter waves are predicted to offer gains over traditional atom sources.Read moreRead less
Nonlinear polaritonics: harnessing collective behaviour of half-light half-matter. This project will advance polaritonics - the cutting-edge interdisciplinary science that aims to harness novel and fascinating properties of strong light-matter interaction in superconductors. The outcomes will underpin the development of the next generation optoelectronic devices for emitting and controlling light.
Towards polaritonics: non-equilibrium dynamics of condensed microcavity polaritons. This research project will contribute to the rapid expansion of the new cutting-edge interdisciplinary science - polaritonics - that aims to harness collective quantum properties of light-matter interaction in semiconductors. Its outcomes will underpin the development of the next generation optoelectronic devices for emitting and controlling light.
Macroscopic quantum state engineering and transport in polaritonic devices. The project aims to demonstrate quantum state engineering and novel transport of hybrid light–matter particles in semiconductors. These particles, called exciton-polaritons, form macroscopic quantum states extending over microns, and display quantum behaviour on an accessible scale. They inherit ultrafast speeds and large nonlinearities from their light (photon) and matter (exciton) constituents, therefore representing a ....Macroscopic quantum state engineering and transport in polaritonic devices. The project aims to demonstrate quantum state engineering and novel transport of hybrid light–matter particles in semiconductors. These particles, called exciton-polaritons, form macroscopic quantum states extending over microns, and display quantum behaviour on an accessible scale. They inherit ultrafast speeds and large nonlinearities from their light (photon) and matter (exciton) constituents, therefore representing an attractive platform for next-generation optoelectronics. This project is designed to enable us to probe fundamental quantum many-body physics on the macroscopic scale, as well as design and test functional components for polaritonic circuits with information storage, transmission, and sensing capabilities.Read moreRead less