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We propose a simple scheme for implementing resilient two-qubit entangling gates in universal cavity QED systems. The technique employs suitably designed laser pulse with modulated amplitude and phase to decrease residual qubit-cavity entanglement that reduces the fidelity of the desired entangling operation. Numerical simulations suggest that the optimized gates are robust against errors in gate time, frequency detuning, atom-field coupling constant and pulse amplitude. Moreover, the optimized gates provide increased robustness to cavity decay as well as strong suppression of atomic spontaneous emissions. With modest experimental parameters the scheme could enable a high gate fidelity exceeding 99% in realistic scenarios. (C) 2020 Elsevier B.V. All rights reserved.
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PHYSICS LETTERS A
ISSN: 0375-9601
Year: 2021
Volume: 388
2 . 7 0 7
JCR@2021
2 . 3 0 0
JCR@2023
ESI Discipline: PHYSICS;
ESI HC Threshold:87
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 4
SCOPUS Cited Count: 4
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 3
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