High-fidelity non-adiabatic dark state gates for neutral atoms

• URL: http://arxiv.org/abs/2602.13885v1
• Date: Sat, 14 Feb 2026 20:53:54 GMT
• Title: High-fidelity non-adiabatic dark state gates for neutral atoms
• Authors: Nader Mostaan, Kapil Goswami, Peter Schmelcher, Rick Mukherjee,
• Abstract summary: Rydberg blockade gates are the most experimentally mature entangling operations in neutral-atom quantum processors.<n>Non-blockade gate schemes offer complementary robustness but typically rely on complex and experimentally demanding control.<n>We show that quantum optimal control enables non-blockade gate schemes to be implemented using the experimentally established pulse-shaping techniques.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Rydberg blockade gates are the most experimentally mature entangling operations in neutral-atom quantum processors, combining fast gate times with simple control, but their performance degrades at larger interatomic separations and remains sensitive to motional and technical noise. Non-blockade gate schemes, such as dark-state and geometric protocols, offer complementary robustness but typically rely on complex and experimentally demanding control. Here we show that quantum optimal control enables non-blockade gate schemes to be implemented using the experimentally established pulse-shaping techniques developed for blockade-based gates. Focusing on the dark-state gate, we construct non-adiabatic implementations that preserve the intrinsic robustness of adiabatic dark-state protocols while achieving gate times comparable to time-optimal blockade gates using only smooth, experimentally feasible pulses. The resulting gates exhibit enhanced resilience to motional coupling, laser noise, and interaction inhomogeneity, particularly near and beyond the blockade radius. This work establishes a practical route to fast, robust two-qubit gates without increased experimental complexity.

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