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Unconditional photonic entanglement verification and quantum metrology using fast, ultra-high-efficiency photon detectors. Scientists can currently only give in-principle demonstrations of the powerful advantages offered by the quantum physics of photons – particles of light. A true quantum technology revolution, that genuinely exploits photons’ exotic nature, requires methods and apparatus that work unconditionally. The main barrier is the extreme fragility of quantum properties due to unavoida ....Unconditional photonic entanglement verification and quantum metrology using fast, ultra-high-efficiency photon detectors. Scientists can currently only give in-principle demonstrations of the powerful advantages offered by the quantum physics of photons – particles of light. A true quantum technology revolution, that genuinely exploits photons’ exotic nature, requires methods and apparatus that work unconditionally. The main barrier is the extreme fragility of quantum properties due to unavoidable losses. This project will overcome this barrier by developing innovative loss-tolerant protocols and devices that unconditionally show and exploit quantum effects, both for long-distance applications and ultra-precise measurement technologies. This collaboration will bring the world’s best photon detectors to Australia, as a key resource for this work and for future research.Read moreRead less
Mesoscopic quantum reality in the light of new technologies. Evidence for the Schrodinger cat that defies macroscopic reality has emerged for systems of several atoms, ions or photons, resulting in a Nobel award in physics in 2012. However, developments in quantum science technology make these states experimentally accessible at an increasingly mesoscopic level. This project will develop a theory to test mesoscopic realism, nonlocality and decoherence in experiment, focusing on cold atom and ion ....Mesoscopic quantum reality in the light of new technologies. Evidence for the Schrodinger cat that defies macroscopic reality has emerged for systems of several atoms, ions or photons, resulting in a Nobel award in physics in 2012. However, developments in quantum science technology make these states experimentally accessible at an increasingly mesoscopic level. This project will develop a theory to test mesoscopic realism, nonlocality and decoherence in experiment, focusing on cold atom and ion trap systems. This project will study multipartite nonlocality based on Bell's theorem, the Einstein-Podolsky-Rosen paradox and Schrodinger's quantum steering. As well as having fundamental significance, these demonstrations are potentially useful for metrology, secure quantum cryptography and ultra-sensitive detectors.Read moreRead less
Resources for Quantum Networks. In classical information theory communication is an important resource. In quantum information theory there are the additional resources of entanglement and quantum communication. The aim of this project is to establish a complete theory of resources for quantum networks, by determining the relation between these resources, their symmetry properties, and effective ways of calculating capacities. Critical issues, such as the networking of quantum computers, quan ....Resources for Quantum Networks. In classical information theory communication is an important resource. In quantum information theory there are the additional resources of entanglement and quantum communication. The aim of this project is to establish a complete theory of resources for quantum networks, by determining the relation between these resources, their symmetry properties, and effective ways of calculating capacities. Critical issues, such as the networking of quantum computers, quantum teleportation and secure communication, require a complete theory of resources. The expected outcome of this project is a rigorous foundation for resources in quantum information that may be used to address these issues.Read moreRead less
Interferometry beyond the Standard Quantum Limit. This research aims to realise measurements below the Standard Quantum Limit (SQL) using advanced quantum optic and opto-mechanical techniques. This is of fundamental interest as the SQL is yet to be observed for a macroscopic object. It is also of particular significance to second generation gravitational wave detectors which are expected to be limited by the SQL. This project will develop an opto-mechanical sensor capable of achieving SQL sensit ....Interferometry beyond the Standard Quantum Limit. This research aims to realise measurements below the Standard Quantum Limit (SQL) using advanced quantum optic and opto-mechanical techniques. This is of fundamental interest as the SQL is yet to be observed for a macroscopic object. It is also of particular significance to second generation gravitational wave detectors which are expected to be limited by the SQL. This project will develop an opto-mechanical sensor capable of achieving SQL sensitivity as well as develop and test techniques to surpass the SQL. These techniques will be directly applicable to long base-line gravitational wave detectors.Read moreRead less
Quantum physics and complexity. How much information about a system’s present is needed to predict its future? This project aims to show that the answer fundamentally depends on how information is stored. Simulations of partially random processes are critical in real-world applications. Surprisingly, theory suggests that a simulation must store much more classical data (like bits) than is required to determine its output. This wastes precious resources. Via optical quantum information experiment ....Quantum physics and complexity. How much information about a system’s present is needed to predict its future? This project aims to show that the answer fundamentally depends on how information is stored. Simulations of partially random processes are critical in real-world applications. Surprisingly, theory suggests that a simulation must store much more classical data (like bits) than is required to determine its output. This wastes precious resources. Via optical quantum information experiments, the project aims to demonstrate and characterise how storing and handling data in quantum states massively reduces this complexity overhead. Another goal is to use novel quantum optics ideas to greatly reduce communication complexity in important remote processing tasks.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE160100356
Funder
Australian Research Council
Funding Amount
$327,216.00
Summary
Quantum measurements: new, better, easier. This project aims to: engineer new state-of-the-art quantum measurements; devise the best ways of sensing quantum signals; and make quantum measurements and characterisation of large quantum systems easier to do. Quantum measurements are the principal means by which we gain access to and characterise the quantum world. The new, better and easier measurements that should result from this project will greatly advance quantum technologies. Specifically, th ....Quantum measurements: new, better, easier. This project aims to: engineer new state-of-the-art quantum measurements; devise the best ways of sensing quantum signals; and make quantum measurements and characterisation of large quantum systems easier to do. Quantum measurements are the principal means by which we gain access to and characterise the quantum world. The new, better and easier measurements that should result from this project will greatly advance quantum technologies. Specifically, they should allow for more efficient characterisation of quantum computers and enable us to engineer the ultimate quantum sensors, enhance mineral prospecting; and make building a quantum computer practical.Read moreRead less
Bulk-boundary correspondence in quantum many-body systems. This project will develop theoretical and numerical methods to explore how the bulk properties of quantum materials at low temperature are manifested on the edge of the material. Characterising this bulk-boundary correspondence will uncover new regimes of physics and underpin the development of powerful quantum technologies in the laboratory.
Foundation technology for quantum measurement, sensing and computing. This project will advance quantum control of cold ions, atoms and diamond colour centres for application of quantum science to high-tech problems, from ion-based quantum computing to diamond-based quantum imaging inside living cells.
Optical technology for quantum science. This project aims to develop and commercialise optical cavity and frequency stabilisation technology to generate laser light at new and precise wavelengths. Australia plays a leading role internationally in quantum science, a burgeoning area of research where fundamental quantum mechanical principles underpin exciting new technological applications, such as ion-based quantum computing, ultracold atom sensing for geo-exploration and defence, and nanoscale i ....Optical technology for quantum science. This project aims to develop and commercialise optical cavity and frequency stabilisation technology to generate laser light at new and precise wavelengths. Australia plays a leading role internationally in quantum science, a burgeoning area of research where fundamental quantum mechanical principles underpin exciting new technological applications, such as ion-based quantum computing, ultracold atom sensing for geo-exploration and defence, and nanoscale imaging inside living human cells. This project aims to continue and develop this role.Read moreRead less
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.