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arXiv · 1602.00320

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

Yun-Pil Shim·Charles Tahan
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Abstract

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.

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Yun-Pil Shim, Charles Tahan. 2016-01-31. Charge-noise-insensitive gate operations for always-on, exchange-only qubits. https://doi.org/10.1103/physrevb.93.121410

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