Resonant-interaction-induced Rydberg antiblockade and its applications

Publication date: Available online 8 October 2019Source: Physics Letters AAuthor(s): Jin-Lei Wu, Jie Song, Shi-Lei SuAbstractDifferent from the conventional Rydberg antiblockade (RAB) regime that either requires weak Rydberg-Rydberg interaction (RRI), or compensates the RRI-induced energy shift by introducing off-resonant interactions, we show that RAB regime can be achieved by resonantly driving the transitions between ground state and Rydberg state under strong RRI. The Rabi frequencies are of small amplitude and time-dependent harmonic oscillation, which plays a critical role for the presented RAB. The proposed unconventional RAB regime is used to construct high-fidelity controlled-Z (CZ) gate and controlled-not (CNOT) gate in one step. Each atom requires single external driving. And the atomic addressability is not required for the presented unconventional RAB, which would simplify experimental complexity and reduce resource consumption.
Source: Physics Letters A - Category: Physics Source Type: research

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