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Journal Article

Implementing a neutral-atom controlled-phase gate with a single Rydberg pulse


Han,  Rui
Quantumness, Tomography, Entanglement, and Codes, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Han, R., Ng, H. K., & Englert, B.-G. (2016). Implementing a neutral-atom controlled-phase gate with a single Rydberg pulse. EPL, 113(4): 40001. doi:10.1209/0295-5075/113/40001.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-630D-F
One can implement fast two-qubit entangling gates by exploiting the Rydberg blockade. Although various theoretical schemes have been proposed, experimenters have not yet been able to demonstrate two-atom gates of high fidelity due to experimental constraints. We propose a novel scheme, which only uses a single Rydberg pulse illuminating both atoms, for the construction of neutral-atom controlled-phase gates. In contrast to the existing schemes, our approach is simpler to implement and requires neither individual addressing of atoms nor adiabatic procedures. With parameters estimated based on actual experimental scenarios, a gate fidelity higher than 0.99 is achievable. Copyright (C) EPLA, 2016