Project Description

Quantum information science and technology (QIST) has been undergoing rapid development in recent years. The recent demonstration of various elements such as quantum computers and quantum communication links indicate the beginning of a new era where QIST starts to transit from pure laboratory research into real-life applications. However, several key enabling technologies, including the high-density high-fidelity storage of quantum information remains a grand challenge that limits the development of integrated microwave quantum circuits at gigahertz frequencies. In this project, we take advantage of the recent development in quantum acoustics and explore phonon engineering strategies to engineer bulk acoustic waves (BAWs) in high-overtone bulk acoustic resonators (HBARs) and control the coupling of qubits with phonons for efficient quantum transduction. It has been observed that HBAR phonons in rectangular structures suffer diffraction losses, which can be mitigated using confocal resonator entrapped HBAR (cHBAR) phonons. We perform theoretical and numerical studies on cHBAR phonons in confocal structures and discuss its implications towards qubit-phonon coupling. 

CU Aerospace Nanoscale Transport Modelling (CUANTAM) Laboratory

Special Requirement

Student must have experience with MATLAB/Python and/or other programming languages. A strong mathematics background and some basic physics/chemistry knowledge are also desired. The student should have maintained at least a 3.5 GPA. Some fundamental knowledge of quantum mechanical properties will be helpful but not required.

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