Nonlinear Phase Gates Beyond the Lamb-Dicke Regime
Akram Kasri, Kimin Park, Radim Filip
TL;DR
This paper introduces a deterministic method for creating nonlinear phase gates in trapped ion systems beyond the Lamb-Dicke regime, leveraging higher-order interactions for efficient quantum processing.
Contribution
It presents a novel protocol that utilizes higher-order interaction terms to generate nonlinear phase gates with reduced control pulses, surpassing previous methods.
Findings
Achieves high-fidelity nonlinear phase gates
Reduces control pulses by nearly three times
Operates beyond the Lamb-Dicke regime
Abstract
Nonlinear phase gates are essential to achieve the universality of continuous-variable quantum processing and its applications. We present a deterministic protocol for generating nonlinear phase gates in trapped ion systems using simultaneous two-tone sideband drives beyond the Lamb-Dicke regime. Our approach harnesses higher-order interaction terms typically neglected or suppressed to construct nonlinear phase gates. This methodology enables high-fidelity gate engineering with a near three-fold reduction in control pulses compared to state-of-the-art theoretical proposals.
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Taxonomy
TopicsQuantum Information and Cryptography · Neural Networks and Reservoir Computing · Laser-Matter Interactions and Applications