Seminar: Dr Thaddeus Ladd, HRL Laboratories, LLC

Opportunities and Challenges for Spin Qubits in Silicon
Worldwide efforts to develop various kinds of silicon-based qubits hope to leverage industrial fabrication resources to enable quantum computing.

 

coloured circles on stylised circuit to represent qubits

Image: Gerd Altmann/Pixabay

Presenter:  Dr Thaddeus Ladd, HRL Laboratories, LLC
Title: Opportunities and Challenges for Spin Qubits in Silicon

Worldwide efforts to develop various kinds of silicon-based qubits hope to leverage industrial fabrication resources, as well as the extremely quiet magnetic environment of isotopically enhanced silicon, to enable quantum computing, but many challenges remain. 

I will discuss efforts at HRL Laboratories, LLC to develop triple-dot qubits in Si/SiGe heterostructures.  I will overview how qubit control is possible using only voltage pulses, discuss the automation of tune-up of arrays of up to 6 quantum dots, and finally the evaluation of fidelity and state leakage using randomized benchmarking [arXiv:1812.02693].

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