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arXiv · 2009.14126

Universal quantum computing using electro-nuclear wavefunctions of rare-earth ions

Manuel Grimm·Adrian Beckert·Gabriel Aeppli·Markus Müller
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Abstract

We propose a scheme for universal quantum computing based on Kramers rare-earth ions. Their nuclear spins in the presence of a Zeeman-split electronic crystal field ground state act as 'passive' qubits which store quantum information. The qubits can be activated optically by fast coherent transitions to excited crystal field states with a magnetic moment. The dipole interaction between these states is used to implement CNOT gates. We compare our proposal with a similar one based on phosphorus donor atoms in silicon and discuss the significantly improved CNOT gate time as compared to rare-earth implementations via the slower dipole blockade.

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Manuel Grimm, Adrian Beckert, Gabriel Aeppli, Markus Müller. 2020-09-29. Universal quantum computing using electro-nuclear wavefunctions of rare-earth ions. https://doi.org/10.1103/prxquantum.2.010312

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