Logical Qubit in a Linear Array of Semiconductor Quantum Dots

Citations of this article
Mendeley users who have this article in their library.


We design a logical qubit consisting of a linear array of quantum dots, we analyze error correction for this linear architecture, and we propose a sequence of experiments to demonstrate components of the logical qubit on near-term devices. To avoid the difficulty of fully controlling a two-dimensional array of dots, we adapt spin control and error correction to a one-dimensional line of silicon quantum dots. Control speed and efficiency are maintained via a scheme in which electron spin states are controlled globally using broadband microwave pulses for magnetic resonance, while two-qubit gates are provided by local electrical control of the exchange interaction between neighboring dots. Error correction with two-, three-, and four-qubit codes is adapted to a linear chain of qubits with nearest-neighbor gates. We estimate an error correction threshold of 10-4. Furthermore, we describe a sequence of experiments to validate the methods on near-term devices starting from four coupled dots.




Jones, C., Fogarty, M. A., Morello, A., Gyure, M. F., Dzurak, A. S., & Ladd, T. D. (2018). Logical Qubit in a Linear Array of Semiconductor Quantum Dots. Physical Review X, 8(2). https://doi.org/10.1103/PhysRevX.8.021058

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free