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arXiv · 2310.10905

Eliminating qubit type cross-talk in the $\textit{omg}$ protocol

Samuel R. Vizvary·Zachary J. Wall·Matthew J. Boguslawski·Michael Bareian·Andrei Derevianko·Wesley C. Campbell·Eric R. Hudson
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Abstract

The $\textit{omg}$ protocol is a promising paradigm that uses multiple, application-specific qubit subspaces within the Hilbert space of each single atom during quantum information processing. A key assumption for $\textit{omg}$ operation is that a subspace can be accessed independently without deleterious effects on information stored in other subspaces. We find that intensity noise during laser-based quantum gates in one subspace can cause decoherence in other subspaces, potentially complicating $\textit{omg}$ operation. We show, however, that a magnetic-field-induced vector light shift can be used to eliminate this source of decoherence. As this technique requires simply choosing a certain, magnetic field dependent, polarization for the gate lasers it is straightforward to implement and potentially helpful for $\textit{omg}$ based quantum technology.

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Samuel R. Vizvary, Zachary J. Wall, Matthew J. Boguslawski, Michael Bareian, Andrei Derevianko, Wesley C. Campbell, Eric R. Hudson. 2023-10-17. Eliminating qubit type cross-talk in the $\textit{omg}$ protocol. https://doi.org/10.1103/physrevlett.132.263201

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