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arXiv · 2107.11748

Ancilla assisted Discrete Time Crystals in Non-interacting Spin Systems

Jianpei Geng·Vadim Vorobyov·Durga Dasari·Joerg Wrachtrup
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Abstract

We show here through experiments and exact analytical models the emergence of discrete time translation symmetry breaking in non-interacting systems. These time-periodic structures become stable against perturbations only in the presence of their interaction with the ancillary quantum system and display subharmonic response over a range of rotation angle errors. We demonstrate this effect for central spin and spin-mechanical systems, where the ancillary induced interaction among the spins stabilizes the spin dynamics against finite errors. Further, we extend these studies and show the possibility to even achieve non-local (remote) synchronization of such Floquet crystals.

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Jianpei Geng, Vadim Vorobyov, Durga Dasari, Joerg Wrachtrup. 2021-07-25. Ancilla assisted Discrete Time Crystals in Non-interacting Spin Systems. https://arxiv.org/abs/2107.11748

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