OUR RESEARCH
Quantum-based devices hold promises for the next generation of technologies expected to be much more powerful than the present-day electronics. Its core requirement is the ability to reliably manufacture, control and measure microscopic quantum systems.
There are two main challenges: decoherence and scalability. The quantum information carried by a qubit (i.e. a quantum bit) inevitably deteriorates through interactions with the environment, causing decoherence. Various control techniques are developed to combat such forces, including the Dynamically Corrected Gates. On the other hand, problems have been identified to concur with the scaling up of spin qubits, the most important ones being the gate crosstalk and leakage.
Our group focuses on developing theoretical methodologies that can help in overcoming these difficulties in semiconductor spin qubit systems. In particular, current research directions include
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Optimization and benchmarking of existing robust control protocols under realistic noise environment
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Quantitative understanding of the gate crosstalk and leakage in a scaled-up qubit array
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Development of microscopic theories on multi-electron multi-qubit quantum devices
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Theoretical understanding of other related quantum phenomena.
