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R. G. Herb Condensed Matter Seminar
Electrically controlled qubits in silicon
Date: Wednesday, November 11th
Time: 2:00 pm
Place: 4274 Chamberlin Hall
Speaker: Thaddeus Ladd, HRL Laboratories
Abstract: Quantum information processing aims to leverage the properties of quantum mechanics to manipulate information in ways that are not otherwise possible. This would enable, for example, quantum computers that could solve certain problems exponentially faster than a conventional supercomputer. One promising approach for building such a machine is to use gated silicon quantum dots. In the approach taken at HRL Laboratories, individual electrons are trapped in a gated potential well at the barrier of a Si/SiGe heterostructure. Spins on these electrons are compelling candidates for qubits due to their long coherence time, all-electrical control, and compatibility with conventional fabrication techniques. In this talk I will discuss the recent demonstration of all-electrical control of silicon-based qubits made from triple quantum dots in isotopically purified material, including methods to mitigate charge noise. The results indicate a strong future for silicon-based quantum technology.
Host: Coppersmith
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