Research
"Boldly hypothesize and carefully verify" ~Hu Shih~
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Research Summary
Research Summary
In our group, we study theoretically quantum physics at the intersection of Quantum Optics, Quantum Information, and AMO Physics. We are interested in fundamental questions in these fields as well as potential applications that could be derived. Currently, we have four main directions of research as described below. Nevertheless, our interest is also driven by curiosity (see the figure on the right).
In our group, we study theoretically quantum physics at the intersection of Quantum Optics, Quantum Information, and AMO Physics. We are interested in fundamental questions in these fields as well as potential applications that could be derived. Currently, we have four main directions of research as described below. Nevertheless, our interest is also driven by curiosity (see the figure on the right).
We study sensing protocols for estimating multiple parameters in a network using quantum states. Our goals are to explore fundamental sensing limits of these protocols and to implement these ideas in suitable physical systems. Our research may find applications in nano-scale imaging, global clock synchronization, and entanglement distribution in a quantum network.
We study sensing protocols for estimating multiple parameters in a network using quantum states. Our goals are to explore fundamental sensing limits of these protocols and to implement these ideas in suitable physical systems. Our research may find applications in nano-scale imaging, global clock synchronization, and entanglement distribution in a quantum network.
Trapped ions offer an established platform for quantum information processing, including quantum communication, quantum simulation, and quantum computation. Improving the coherence time of the ion qubits remains a crucial challenge. We study controls of the ions' external motions, e.g. parametric amplification of a motional mode, to enhance the coherent interactions of the qubits, therefore improving the power of the platform.
Trapped ions offer an established platform for quantum information processing, including quantum communication, quantum simulation, and quantum computation. Improving the coherence time of the ion qubits remains a crucial challenge. We study controls of the ions' external motions, e.g. parametric amplification of a motional mode, to enhance the coherent interactions of the qubits, therefore improving the power of the platform.
Quantum resource theories provide a useful framework for exploring quantum effects, such as coherence and entanglement, in a systematic way. We develop further an "operational" requirement adding to those theories, where we search for quantifications of quantum effects that also have a close relation to quantum-enhanced tasks, such as metrology. Our work can offer important guidance to preparation, distribution, and use of resources in quantum-enhanced tasks.
Quantum resource theories provide a useful framework for exploring quantum effects, such as coherence and entanglement, in a systematic way. We develop further an "operational" requirement adding to those theories, where we search for quantifications of quantum effects that also have a close relation to quantum-enhanced tasks, such as metrology. Our work can offer important guidance to preparation, distribution, and use of resources in quantum-enhanced tasks.
Quantum optomechanics is the study of quantum effects through the interaction between light and mechanical objects. The mechanical objects can have large masses, therefore preparing them in certain quantum states would allow exploring fundamental physics, such as gravitational effects in quantum systems, and building novel sensors for force, acceleration, etc.
Quantum optomechanics is the study of quantum effects through the interaction between light and mechanical objects. The mechanical objects can have large masses, therefore preparing them in certain quantum states would allow exploring fundamental physics, such as gravitational effects in quantum systems, and building novel sensors for force, acceleration, etc.
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