Geometric manipulation of a decoherence-free subspace in atomic ensembles

Dongni Chen, Si Luo, Ying Dan Wang, Stefano Chesi, Mahn Soo Choi

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1 Citation (Scopus)


We consider an ensemble of atoms with ?-type level structure trapped in a single-mode cavity, and propose a geometric scheme of coherent manipulation of quantum states on the subspace of zero-energy states within the quantum Zeno subspace of the system. We find that the particular subspace inherits the decoherence-free nature of the quantum Zeno subspace and features a symmetry-protected degeneracy, fulfilling all the conditions for a universal scheme of arbitrary unitary operations on it.

Original languageEnglish
Article number022627
JournalPhysical Review A
Issue number2
Publication statusPublished - 2022 Feb

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© 2022 American Physical Society.

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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