期刊
PHYSICS LETTERS A
卷 384, 期 1, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physleta.2019.126039
关键词
Rydberg atom; Rydberg antiblockade regime; Quantum logic gate
资金
- National Natural Science Foundation of China [11804308, 11675046]
- China Postdoctoral Science Foundation [2018T110735]
Different 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. (C) 2019 Elsevier B.V. All rights reserved.
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