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
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
Building time crystals with ultracold atoms. This project aims to create a new exotic form of quantum matter in which a many-body system of ultracold atoms bouncing on a vibrating mirror spontaneously self-organises its motion with a period tens of times longer than the driving period of the mirror. Such ‘time crystals’ are predicted to be robust against external perturbations and to persist for very long times. The project expects to generate new knowledge on exotic non-equilibrium crystalline ....Building time crystals with ultracold atoms. This project aims to create a new exotic form of quantum matter in which a many-body system of ultracold atoms bouncing on a vibrating mirror spontaneously self-organises its motion with a period tens of times longer than the driving period of the mirror. Such ‘time crystals’ are predicted to be robust against external perturbations and to persist for very long times. The project expects to generate new knowledge on exotic non-equilibrium crystalline phenomena in the time domain, such as many-body localisation with temporal disorder, which has counter-intuitive characteristics such as absence of thermalisation and vanishing direct current transport. Time crystals could provide significant benefits for the storage and transfer of quantum information, and this, and other outcomes may ultimately lead to commercial products.Read moreRead less
Transport and impurity dynamics in a unitary Fermi gas. This project aims to generate new understandings of transport and the behaviour of impurities in a gas of strongly-interacting atoms cooled to nanoKelvin temperatures. By measuring the response of a unitary Fermi gas to disturbances with well-defined momenta and energies, we will map the elementary excitations in both the superfluid and normal fluid phases. From this, the parameters that define how particles and impurities travel through th ....Transport and impurity dynamics in a unitary Fermi gas. This project aims to generate new understandings of transport and the behaviour of impurities in a gas of strongly-interacting atoms cooled to nanoKelvin temperatures. By measuring the response of a unitary Fermi gas to disturbances with well-defined momenta and energies, we will map the elementary excitations in both the superfluid and normal fluid phases. From this, the parameters that define how particles and impurities travel through the system can be determined. Our study will reveal whether the unitary Fermi gas approaches a conjectured quantum limit for perfect fluidity, examine how the properties of the gas depend on impurity concentration and establish new benchmarks for theories of strongly-correlated quantum matter.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.
Read moreRead less
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
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
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE240100044
Funder
Australian Research Council
Funding Amount
$860,000.00
Summary
Cryogenic Experimental Laboratory for Low-background Australian Research. This project aims to build an open-access cryogenic facility in the only deep-underground physics laboratory in the southern hemisphere. This facility, called the Cryogenic Experimental Laboratory for Low-background Australian Research (CELLAR), will provide extreme shielding from sources of noise, enabling ultra-precise experiments for fundamental science and emerging applications. The expected outcomes include a deeper u ....Cryogenic Experimental Laboratory for Low-background Australian Research. This project aims to build an open-access cryogenic facility in the only deep-underground physics laboratory in the southern hemisphere. This facility, called the Cryogenic Experimental Laboratory for Low-background Australian Research (CELLAR), will provide extreme shielding from sources of noise, enabling ultra-precise experiments for fundamental science and emerging applications. The expected outcomes include a deeper understanding of astrophysics, alongside technological advances in emerging quantum technologies. CELLAR’s unique capabilities will attract strong international collaborations with multidisciplinary teams, educating the next generation of scientists and advancing the growth of Australian high-technology industries.Read moreRead less