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arXiv · 2305.17434

Demonstration of geometric diabatic control of quantum states

Kento Sasaki·Yuki Nakamura·Tokuyuki Teraji·Takashi Oka·Kensuke Kobayashi
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Abstract

Geometric effects can play a pivotal role in streamlining quantum manipulation. We demonstrate a geometric diabatic control, that is, perfect tunneling between spin states in a diamond by a quadratic sweep of a driving field. The field sweep speed for the perfect tunneling is determined by the geometric amplitude factor and can be tuned arbitrarily. Our results are obtained by testing a quadratic version of Berry's twisted Landau-Zener model. This geometric tuning is robust over a wide parameter range. Our work provides a basis for quantum control in various systems, including condensed matter physics, quantum computation, and nuclear magnetic resonance.

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Kento Sasaki, Yuki Nakamura, Tokuyuki Teraji, Takashi Oka, Kensuke Kobayashi. 2023-05-27. Demonstration of geometric diabatic control of quantum states. https://doi.org/10.1103/physreva.107.053113

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