Research Interest

           A new generation of devices with ability to measure, engineer, and control materials at the single-atom level presents unlimited opportunities to transform technologies impacting the way we live. Quantum device technology has made tremendous progress, moving from quantum physics into a cross-disciplinary field of applied research.

Quantum technologies which exploit quantum properties have been around for a while, such as LEDs, lasers, photodetectors, or magnetic resonance device used for medical imaging. Recent theoretical and experimental research based on individual quantum systems, such as atoms and photons, have led to new quantum technologies aiming to harness non-classical quantum effects in applications.
There are mainly two different classes of quantum devices, given as systems where the quantum nature manifests itself in terms of discrete energy spectra, but their dynamics may still be treated within a semiclassical scenario and the systems whose behaviour is entirely governed by the quantum states.

QD research focus

Quantum device technology has made tremendous progress, moving from quantum physics into a cross-disciplinary field of applied research.
We are interested in building new theories, modelling and performing numerical simulations in the following areas:

Generation
Lasers
Spasers
Optical Amplifiers
Opto Thermal
Transistors
Interaction
Plasmonics
Scattering
Wideband absorption
Resonance energy transfer
Propagation
Waveguide
Turbid media

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QD research focus

Our core focus is to conduct advance research around the fundamental quantum properties that leads to enhance quantum device technology

Metamaterial

Metamaterials are artificially engineered periodic structures with exceptional optical properties that are not found in conventional materials. They are built from individual elements, designed to mimic the electromagnetic response of atoms. Stacking many nano-engineered elements smaller than the wavelength of light makes new solid materials.

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Spaser technology

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.

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Thermal transistor technology

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.

Read More

Superradiance

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.

Read More

Resonance energy transfer

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.

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Plasmons in nanoparticles and waveguides

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.

Read More

Wideband optical absorption

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.

Read More

Metamaterial

Metamaterials are artificially engineered periodic structures with exceptional optical properties that are not found in conventional materials. They are built from individual elements, designed to mimic the electromagnetic response of atoms. Stacking many nano-engineered elements smaller than the wavelength of light makes new solid materials.

Read More

Spaser technology

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.

Read More

Thermal transistor technology

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.

Read More

Superradiance

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.

Read More

Resonance energy transfer

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.

Read More

Plasmons in nanoparticles and waveguides

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.

Read More

Wideband optical absorption

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.

Read More