Preprint: Charge-noise-insensitive gate operations for always-on, exchange-only qubits

January 31st, 2016  |  Published in News, Preprints, Quantum Computing

We introduce an always-on, exchange-only qubit made up of three localized semiconductor spins that offers a true “sweet spot” to fluctuations of the quantum dot energy levels. Both single- and two-qubit gate operations can be performed using only exchange pulses while maintaining this sweet spot. We show how to interconvert this qubit to other three-spin encoded qubits as a new resource for quantum computation and communication.

Charge-noise-insensitive gate operations for always-on, exchange-only qubits

Comparison between different types of exchange-only qubits.

Comparison between different types of exchange-only qubits.

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Tahan Research

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