Design and modeling of two-dimensionnal arrays of silicon qubits

“Quantum computers” may soon be able to solve problems beyond the reach of conventional computers. Such computers no longer manipulate electrons as particles, but as waves that maintain phase relationships and can interfere. The preparation, coherent manipulation and “reading” of quantum states is extremely challenging. One promising option for making quantum bits (qubits) is to store electrons in silicon quantum dots and manipulate their spin. The CEA Grenoble fabricates and characterizes such devices, and develops appropriate tools for their modeling. The objective of this Master training is to contribute to the design of 2D arrays of qubits on silicon through numerical simulations at the nanoscale. The impact of the layout of these arrays, of their dimensions, and of the choice of materials on the physics of the qubits will, in particular, be investigated. The outcome of these simulations will be used as guidelines for the design and integration of 2D arrays of qubits at CEA/LETI. This Master training will, therefore, be tightly connected to the ongoing experimental activity on silicon qubits at CEA and CNRS in Grenoble.

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