In AχL, we seek to understand how diverse and complex phenomena arise when quantum devices and systems interact. Our research focuses on building novel theories, new insights, and theoretical and software tools using quantum mechanics and quantum electrodynamics framework. Some of the devices we have proposed, designed, and analysed include thermal-transistors, advanced lasers, specialized optical amplifiers, spasers, various plasmonic structures useful for nanoscale chips and circuits, and various metamaterial and resonance energy transfer structures for manipulating optical signals.
Traditionally, nanoscale quantum devices were studied using semi-classical methods where quantum mechanics concepts were used alongside classical concepts. Our approach is different to the tradition, and we invoke the full machinery available in quantum electrodynamics to analyse new QDs. The difference we make is that we can build a fundamental understanding of QDs and engineer their characteristics at the material level. We envision our approach will lead to many new QD technologies that can radically shape the way we work and live!
A new generation of devices has come to reality because of the recent technological advances in measuring, engineering and controlling matter at the sub-nanometer level. Quantum technology has made tremendous progress in moving from a specialised quantum physics topic into a cross-disciplinary field of applied research with multi-disciplinary researchers.
AχL creates collaborative opportunities and mutually beneficial exchange of skills to support QDT R&D interests among many industry and academic partners worldwide. All our collective project outcomes will be published in high-quality journals and conferences, and associated codes and workings will be publicly available. We do not pursue commercial ventures or have financial interests in any projects we carry out.
Quantum device technology is developing rapidly and has the potential to create immense wealth in the global economy. Despite the promising progress and opportunity, there is a risk if we do not train a new generation of graduate students, scientists and engineers who can conceive the knowledge which was, until recently, explored only by pure theoreticians.
A new generation of devices has come to reality because of the recent technological advances in measuring, engineering and controlling matter at the sub-nanometer level. Quantum technology has made tremendous progress in moving from a specialised quantum physics topic into a cross-disciplinary field of applied research with multi-disciplinary researchers.
AχL creates collaborative opportunities and mutually beneficial exchange of skills to support QDT R&D interests among many industry and academic partners worldwide. All our collective project outcomes will be published in high-quality journals and conferences, and associated codes and workings will be publicly available. We do not pursue commercial ventures or have financial interests in any projects we carry out.
Quantum device technology is developing rapidly and has the potential to create immense wealth in the global economy. Despite the promising progress and opportunity, there is a risk if we do not train a new generation of graduate students, scientists and engineers who can conceive the knowledge which was, until recently, explored only by pure theoreticians.
Plasmons are the resonant collective oscillation of conduction electrons in metals when coupled with photons. The resonance energy depends on various factors, including material, geometry, surrounding medium and interacting photons. We have made fundamental advances in this area by advancing the theory and applying that theory to characterize various plasmonic devices and waveguiding structures.
Spaser is an acronym for surface plasmon amplification by stimulated emission of radiation. A spaser is a nanoscale laser with subwavelength dimensions and a low-Q plasmonic resonator, which sustains its oscillations using stimulated emission of surface plasmons. We have made several advances in spaser theory, including innovating biocompatible spasers, electrically powered spasers and various 2D materials-based spasers.
In general, excited nanoparticles emit energy independently. However, if a group of nanoparticles (say N) pairs with each other and emit energy, the resulting field is N times more than their uncoupled emissions. This effect is known as superradiance. We have made fundamental contributions to designing tunable superradiance emitters for biomedical applications.
After photoexcitation, energy absorbed by a nanoparticle can be transferred efficiently to another nanoparticle in the vicinity of a few nanometers or less by resonance energy transfer (RET). We have made fundamental contributions to this area by developing the quantum electrodynamics theory for this mechanism.
Quantum thermal management involves nanoscale device and materials that transport, amplify, and control the flow of thermal energy. We have made fundamental contributions by proposing various types of quantum thermal transistors, which regulate the thermal conductivity between two of its terminals according to an input which can be either electrical, thermal or optical.
Typical metamaterials, also known as artificial materials, attain their properties due to resonant plasmonic-like features and thus have narrow operating frequency regions. We have devised various schemes to extend the functional areas in metamaterials, specifically for optical absorption. Our wideband schemes have many applications in biomedical and optical signal processing areas.