If a spin could torque: quantum force sensing with levitated nanodiamonds. This project aims to detect the tiny twisting forces imparted by a single quantum spin on a host diamond nanocrystal levitating in vacuum. Our team will build both a hypersensitive detector of quantum rotations and the complex theoretical models for quantum spin systems coupled to the mechanical motion of nanometre-sized diamonds. The expected experimental capabilities and knowledge generated by this project will enable w ....If a spin could torque: quantum force sensing with levitated nanodiamonds. This project aims to detect the tiny twisting forces imparted by a single quantum spin on a host diamond nanocrystal levitating in vacuum. Our team will build both a hypersensitive detector of quantum rotations and the complex theoretical models for quantum spin systems coupled to the mechanical motion of nanometre-sized diamonds. The expected experimental capabilities and knowledge generated by this project will enable world-first measurements of quantum effects with unparalleled sensitivity and powerful new quantum sensing paradigms. The project should enable significant benefits, such as incisive tests of the limits of quantum theory and new Australian technology operating at the interface of the quantum and classical worlds.Read moreRead less
Controlling spin coherence with rotation. This project aims to harness the ability to control the fundamental interactions which limit the precision of a diamond quantum sensor, enabling more sensitive magnetometry. Quantum sensors are unveiling new insights into nano-scale phenomena. Single atom defects in diamonds have been at the forefront of this revolution in nano-scale sensor technology. A unique capability, spinning diamond quantum sensors at up to 500,000 rpm, fast enough that quantum pr ....Controlling spin coherence with rotation. This project aims to harness the ability to control the fundamental interactions which limit the precision of a diamond quantum sensor, enabling more sensitive magnetometry. Quantum sensors are unveiling new insights into nano-scale phenomena. Single atom defects in diamonds have been at the forefront of this revolution in nano-scale sensor technology. A unique capability, spinning diamond quantum sensors at up to 500,000 rpm, fast enough that quantum properties of the defects are preserved during a cycle has been established. This project will address the long-standing problem of nano-scale solid-materials characterisation using rotationally-enhanced quantum magnetic resonance spectroscopy.Read moreRead less
Applications and tests of mesoscopic quantum coherence and entanglement. This project aims to probe the nature of quantum reality at the mesoscopic level. Quantum mechanics predicts strange spooky steering effects. Recent experiments have confirmed such nonlocality between two particles. The project's intended outcome is to provide a theoretical backbone to extend these experiments to larger laboratory- based systems. The objective is theory for experiments enabling spooky action to be quantifie ....Applications and tests of mesoscopic quantum coherence and entanglement. This project aims to probe the nature of quantum reality at the mesoscopic level. Quantum mechanics predicts strange spooky steering effects. Recent experiments have confirmed such nonlocality between two particles. The project's intended outcome is to provide a theoretical backbone to extend these experiments to larger laboratory- based systems. The objective is theory for experiments enabling spooky action to be quantified and quantum paradoxes including the notion of parallel universes to be better understood. Anticipated outcomes are the use of quantum nonlocality to provide secure communication and ultra-sensitive measurement capabilities.Read moreRead less
Outmaneuvering correlated noise in quantum computers. The project aims to characterise and control quantum machines available today. These machines overwhelmingly suffer from noise with complex structures. Thus, a key target of the project is to develop a theory to describe and manipulate complex quantum processes. The project then intends to apply this theory to commercial-grade quantum computers. This approach is anticipated to lead to a new understanding of time-correlated complex quantum pro ....Outmaneuvering correlated noise in quantum computers. The project aims to characterise and control quantum machines available today. These machines overwhelmingly suffer from noise with complex structures. Thus, a key target of the project is to develop a theory to describe and manipulate complex quantum processes. The project then intends to apply this theory to commercial-grade quantum computers. This approach is anticipated to lead to a new understanding of time-correlated complex quantum processes and develop methods to enhance the performance of today's quantum computers. Noise characterisation and mitigation should have commercial value and benefit research groups working to develop quantum technologies, both in Australia and internationally.Read moreRead less
ARC Centre of Excellence for Engineered Quantum Systems. This Centre aims to build sophisticated quantum machines to harness the quantum world for the future health, economy, environment and security of Australian society. It intends to pioneer the designer quantum materials, engines and imaging systems at the heart of these machines. It also solves the most challenging research problems at the interface of basic quantum physics and engineering. The Centre will work with industry partners to tra ....ARC Centre of Excellence for Engineered Quantum Systems. This Centre aims to build sophisticated quantum machines to harness the quantum world for the future health, economy, environment and security of Australian society. It intends to pioneer the designer quantum materials, engines and imaging systems at the heart of these machines. It also solves the most challenging research problems at the interface of basic quantum physics and engineering. The Centre will work with industry partners to translate these research discoveries into practical applications and devices. It will train scientists in research, innovation, and entrepreneurship, which is expected to affect Australia’s high-tech economy.Read moreRead less
Quantum measurement as a resource. Advanced quantum computers will use modular measurements significantly enhancing their capabilities. However, due to the noisy environment, the measurements may have nontrivial effects on the computation. Making best use of realistic (hence imperfect) measurements is a challenging problem that hinders the development of these technologies. This project, using modern tools of resource theory, aims to design optimal realistic measurement procedures for near-term ....Quantum measurement as a resource. Advanced quantum computers will use modular measurements significantly enhancing their capabilities. However, due to the noisy environment, the measurements may have nontrivial effects on the computation. Making best use of realistic (hence imperfect) measurements is a challenging problem that hinders the development of these technologies. This project, using modern tools of resource theory, aims to design optimal realistic measurement procedures for near-term noisy quantum devices. The expected outcomes of the project are refined methods to optimise quantum measurements in today's rudimentary quantum machines. This will provide a significant benefit to the Australian community, advancing the development of disruptive quantum technologies.Read moreRead less
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
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