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 Internship Program List

Project Supervisor Project Title Project Description
Asst Prof Chong Yidong Theoretical study of topological phenomena in optical lattices  Topological insulators are novel phases of matter featuring quantum states that are confined to the edge of a sample and immune to scattering from defects. In this project, the student will study the theory of topological insulator analogs implemented using classical electromagnetic waveguide lattices. Such systems have been demonstrated experimentally only in the last two years, and may serve as the basis of novel optical devices such as reflection-immune waveguides. The student will perform numerical simulations to explore how the propagation of light behaves in these lattices, under conditions of nonlinearity and amplification where new optical behaviors can emerge. Applicants should have a sound understanding of the theory of quantum mechanics, solid-state physics, and classical electromagnetism. Experience using numerical software, such as Matlab, GNU Octave, or Scientific Python, is also strongly preferred. 
Assoc Prof Chia Ee Min, Elbert Terahertz time-domain spectroscopy studies of strongly correlated electron materials  The student intern will perform terahertz time-domain spectroscopy (THz-TDS) measurements of strongly correlated electron systems, for example Dirac materials such as graphene, topological insulators and superconductors, solar cell materials such as the organometallic halide perovskites, and semiconducting nanowires. The student will learn about the experimental setup, theoretical derivations of the transmission coefficient, data analysis, and physical models that explain the data. 
Prof Fichou Denis Fabrication and testing of organic and hybrid photovoltaic solar cells The quest for low-cost photovoltaic (PV) systems experiences a tremendous interest in the scientific community. This research project consists in fabricating and testing novel PV solar cells based on organic semiconductors. The intern student will prepare organic thin films by either vacuum deposition or wet processing from solution. The morphology of these films will then be investigated using atomic force microscopy, whereas their optical properties will be studied by absorption and fluorescence spectroscopies. Finally, the PV devices will be completed by depositing top contact electrodes and tested in inert atmosphere under simulated solar light (AM1.5G) and under monochromatic illumination for the determination of the external quantum efficiency. The intern student will work together with our other group members, Research Fellows and PhD students, and will benefit of a truly international environment. 
Asst Prof Gao Weibo Quantum information processing with solid state qubit  The project will lead you to the state-of-the-art in the quantum information science frontier. We will study different defect system in wide band gap oxide materials. We will overcome a series of technology difficulties, such as defect engineering and defect searching in host oxide materials; addressing, quantum characterization and spin manipulation in individually defect system, which are all significant breakthroughs towards single defect based quantum technology applications. We will manipulate spin of single defect system in wide bandgap oxide materials to ensure its high quantum performance as a promising building block for future quantum computing technology.  
Asst Prof Liew Chi Hin Timothy Coherence Properties of Bosonic Cascade Lasers (Theoretical Physics Project)  Bosonic Cascade Lasers are a recently proposed type of laser based on exciton (electron-hole pair) quasiparticles inside semiconductor quantum wells. They are predicted to allow the high efficiency generation of terahertz frequency radiation, which itself has applications ranging from medical imaging to short-range communications. Bosonic Cascade Lasers combine the advantages of a bosonic system and more conventional fermionic cascades, namely, strong stimulation of scattering processes (as in e.g., optical frequency exciton-polariton lasers) and the generation of multiple energy quanta from a single excitation.

Being a new design, Bosonic Cascade Lasers are also a relatively unexplored quantum optical system. The aim of this project is to employ theoretical techniques in quantum optics to determine the quantum statistical properties of terahertz emission. State-of-the-art numerical simulations will be used to assess the quantum coherence and any entanglement between the system modes, which could be mediated by the terahertz field. The project is intended to form an introduction to modern quantum optics, while involving elements of solid-state physics and providing the opportunity to contribute directly to a current problem at the front of the research field.

Suggested References: T. C. H. Liew, et al., Phys. Rev. Lett., 110, 047402 (2013).
Asst Prof Paterek Tomasz  Multipartite quantum correlations  Students will learn and study quantum entanglement and other forms of non-classical correlations between multiple quantum systems. 
Asst Prof Paterek Tomasz  Chemical compass  Students will study different ways of building compasses with emphasis on those utilising quantum coherence. 
Assoc Prof Pinaki Sengupta Metal-insulator transition in the Shastri-Sutherland lattice  The study of Metal-Insulator (MI) transition is on great significance both because of the underlying fundamental physics as well as fr practical applications. The problem is particularly interesting in 2 dimensions. We shall study the MI transition on a particular lattice (the Shastri-Sutherland lattice) where geometric frustration leads to very interesting
physical phenomena. We shall use the dynamical mean field theory for the purpose.
Assoc Prof Pinaki Sengupta  Computational investigation of the 1D Heisenberg model with competing DM interaction   he Heisenberg model has long served as the paradigmatic model to study quantum magnetism. The model in one-dimension is well understood and forms the basis of our understanding of Interaction quantum spins. The Heisenberg model on different lattices produces a rich variety of novel quantum states. The introduction of supplementary Dzyaloshinskii-Moriya interaction adds to the richness of the possible states. This has recently gained attention because of its relevance to topological phases - one of the most active fronts of Condensed Matter research at present. We shall investigate the effect of DM interaction on the Heisenberg model in 1D using computational methods.
Assoc Prof Pinaki Sengupta Magnons on the Shastry-Sutherland lattice  The study of quantum magnetism in reduced dimensions is a very active frontier of current Condensed Matter physics for the rich variety of quantum phases it generates. The Shastry-Sutherland model hasemerged as a versatile paradigm for studying the interplay between geometric frustration and strong interactions. We shall use a generalise spin wave theory to study the dynamics of magnons within the framework of the antiferromagnetic quantum Heisenberg model. 
Assoc Prof Rainer Dumke Hybrid Quantum Systems  The student will work in a research team on a project which has the goal to realize Hybrid Quantum Systems made from ultra cold neutral atoms and superconducting quantum circuits. A independent project related to this goal will be assigned to the successful candidate giving him the opportunity to pursue research on his own initiatives. 
Assoc Prof Rainer Dumke  Quantum Sensors  Quantum Sensors have unmatched precision in a broad area of applications. However still research pushes their limits. In this project the successful candidate will be targeting open questions in this area and work independently on a related project. 
Assoc Prof S.N. Piramanayagam  Investigations of Spintronics Materials  Spintronics is emerging as an exciting combination of fundamental interest and technological applications. Several new observations excite the physicists. The technological challenges of making these materials in to memory or sensors excite the technologists. The proposed project is an investigations on materials for spintronics applications, such as memory or other newly emerging devices. During the internship, the student will learn thin film deposition technology, characterization of magnetic properties etc. The knowledge gained from the project will help in further research in Spintronics or find a career in the electronics industry  
Assoc Prof S.N. Piramanayagam  Investigations of Magnetic Nanostructures  Hard disk drives which help to store the information or the magnetic random access memory devices which are predicted to replace DRAM technology are made using magnetic nanostructures. In the first case, the nanostructures are disordered, whereas in the case of memory and hard disk media, a periodic nanostructure is desired. The proposed project is to fabricate magnetic nanostructures using a combination of thin film deposition, self-assembly of diblock copolymers and etching and to investigate their structural and magnetic properties. The knowledge gained from the project will help in further research in Spintronics or find a career in the electronics industry. 
Assoc Prof Sum Tze Chien Probing the Energetics and Carrier Dynamics in novel Organic-Inorganic Perovskite Solar Cells   Halide perovskite solar cells are the most promising 3rd generation solar cells with efficiencies exceeding 22%.
In this project, we investigate the charge dynamics and relaxation mechanisms in novel halide perovskite materials (beyond CH3NH3PbI3 – e.g. Pb-free systems). The student will be tasked with sample preparation and characterization of the band structure using UV/X-ray Photoelectron Spectroscopy and the carrier dynamics using ultrafast optical spectroscopy.  
Assoc Prof Sum Tze Chien  Mesoscopic Physics in low-dimensional halide perovskites  Halide perovskites have demonstrated outstanding optoelectronic properties. In this project, we investigate the photophysical properties of perovskite nanostructures (e.g., quantum dots, nanoplatelets or nanowires) using ultrafast optical spectroscopy. The student will be tasked with sample preparation and characterization using optical spectroscopy techniques like transient photoluminescence and pump-probe spectroscopy. 
Asst Prof Yong Ee Hou Developing models to study membrane biogenesis  Membrane biogenesis is the study of how a biological membrane is assembled. The main goal of this research work is to understand

1) How multi-species lipids interact inside a membrane
2) The equilibrium shape configurations
3) Effects of lipid flip flops
4) Effects of external stresses

Student will use a combination of analytical and numerical methods.
Assoc Prof Zhang Baile Physics in invisibility cloaking  Harry Potter’s invisibility cloak exists not only in fiction, but also in physics. At Nanyang Technological University in Singapore, we are developing fundamental as well as practical strategies that can guide light and heat around objects smoothly to render them “invisible” to eyes or detectors, analogous to the scenario where water streams around a rock as if nothing happened. During this internship project, the candidate will not only learn fundamental physics principles underlying the recent development of invisibility cloaking technology, but also take part in the design, implementation and experimental characterization of a practical cloaking device. Candidates are expected to have fundamental knowledge in electrodynamics, and basic coding skills or good hands-on capability.