Two-qubit atomic gates: spatio-temporal control of Rydberg interaction

We use a novel optimization procedure that includes the temporal and spatial parameters of the pulses acting on arrays of trapped neutral atoms to prepare entangling gates in N-qubit systems. The spatiotemporal control allows treating a denser array of atoms, where each pulse acts on a subset of the qubits, potentially allowing to speed up the gate operation by two orders of magnitude by boosting the dipole-blockade between the Rydberg states. Studying the rate of success of the algorithm under different constraints, we evaluate the impact of the proximity of the atoms and, indirectly, the role of the geometry of the arrays in three and four-qubit systems, as well as the minimal energy requirements and how this energy is used among the different qubits. Finally, we characterize and classify all optimal protocols according to the mechanism of the gate using a quantum pathway analysis.

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Finding, mapping, and classifying optimal protocols for two-qubit entangling gates

Sola,

Shin,

Chang

2023

Phys. Rev. A

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Two-qubit atomic gates: spatio-temporal control of Rydberg interaction

Abstract: By controlling the temporal and spatial features of light, we propose a novel protocol to prepare two-qubit entangling gates on atoms trapped at close distance, which could potentially speed up...

Cited by 6 publications

References 72 publications

Protecting the fidelity of a pulsed-driven harmonic oscillator

Protecting the fidelity of a pulsed-driven harmonic oscillator

Optimal protocols for entangling gates inN-qubit atomic systems

Finding, mapping, and classifying optimal protocols for two-qubit entangling gates

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