Hybrid solid state qubits: the powerful role of electron spins

Details Hybrid solid state qubits: the powerful role of electron spins Hybrid solid state qubits: the powerful role of electron spins

2011-03-02

arxiv.org/abs/1103.0418v1

Annual Review of Condensed Matter Physics 2 189-212 (2011)

Physics

Quantum Physics

54 pages, 7 figures

Scientific paper

10.1146/annurev-conmatphys-06291

We review progress on the use of electron spins to store and process quantum information, with particular focus on the ability of the electron spin to interact with multiple quantum degrees of freedom. We examine the benefits of hybrid quantum bits (qubits) in the solid state that are based on coupling electron spins to nuclear spin, electron charge, optical photons, and superconducting qubits. These benefits include the coherent storage of qubits for times exceeding seconds, fast qubit manipulation, single qubit measurement, and scalable methods for entangling spatially separated matter-based qubits. In this way, the key strengths of different physical qubit implementations are brought together, laying the foundation for practical solid-state quantum technologies.

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