Skyrmion Qubits: When quantum computing meets skyrmion spintronics.
Tuesday July 4th 2023, 15h – A003
Sixty years after its proposal in particle physics, the concept of a skyrmion as a topological quasi-particle, has now found a highly suitable application in the form of whirl-like nano-objects observed in helimagnetic materials. In this talk, I will review the appealing properties of skyrmions for magnetic storage of classical information, including their nanoscale size, topological stability, lifetime, and tunable energetics. The discovery of stable nanometer-scale skyrmions at low temperatures has sparked interest in their quantum properties for information processing, while improved quantum sensors and novel skyrmion-hosting materials enable their experimental exploration.
I will discuss a new class of primitive building blocks for realizing quantum logic elements based on nanoskyrmions. In a skyrmion qubit, information is stored in the quantum degree of helicity, and the logical states can be adjusted by electric and magnetic fields, offering a rich operation regime with high anharmonicity. Scalability, qubit parameter tunability, and readout by nonvolatile techniques converge to make the skyrmion qubit highly attractive as a logical element of a quantum processor. Using skyrmions in the quantum regime introduces an entirely new direction in the filed of skyrmionics and an unexplored avenue for quantum computing. The challenges are now practical, primarily to identify suitable materials with the required characteristics and engineer architectures for the specific functionalities.
Gerbold Menard (LPENS)
Landry Bretheau (l'X)
Eric Anderson (UW)
Wilfrid Poirier (LNE)
Emmanuel Baudin (LPENS)
Zaki Legthas (LPENS)
Mario Amado (University of Salamanca)
Werner Wegscheider (ETH-Zurich)
Danijela Marcovic (UMR-Thales)
Mathieu Delbecq (LPENS)
Jorge Vallejo-Bustamante (LPS)
Liam Farrar (University of St. Andrews)
Christophe Mora (Universite de Paris)
Francois Parmentier (SPEC)
Herve Aubin (C2N)
Michael Manfra (Purdue University)
Banan Kerdi (LNCMI-Toulouse)
Abhishek Juyal (Neel Institute)
Arthur Marguerite (College de France)
Kamran Behnia (ESPCI)