Geometric Manipulation of a Decoherence-Free Subspace in Atomic Ensembles

• URL: http://arxiv.org/abs/2103.07907v1
• Date: Sun, 14 Mar 2021 12:19:10 GMT
• Title: Geometric Manipulation of a Decoherence-Free Subspace in Atomic Ensembles
• Authors: Dongni Chen, Si Luo, Ying-Dan Wang, Stefano Chesi, and Mahn-Soo Choi
• Abstract summary: We consider an ensemble of atoms with $Lambda$-type level structure trapped in a single-mode cavity. We 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.
• Score: 0.7046417074932257
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We consider an ensemble of atoms with $\Lambda$-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.

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