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Symmetric Rydberg controlled-Z gates with adiabatic pulses

Journal Article · · Physical Review A
 [1];  [2];  [3];  [3];  [3]
  1. Univ. of Wisconsin, Madison, WI (United States); University of Wisconsin, Madison
  2. Rzhanov Inst. of Semiconductor Physics SB RAS, and Novosibirsk State Univ. (Russia)
  3. Univ. of Calgary, AB (Canada)
+ Show Author Affiliations
We analyze neutral atom Rydberg CZ gates based on adiabatic pulses applied symmetrically to both atoms. Analysis with smooth pulse shapes and Cs atom parameters predicts the gates can create Bell states with fidelity F > 0.999 using adiabatic rapid passage (ARP) pulses. With globally optimized adiabatic pulse shapes, in a two-photon excitation process, we generate Bell states with fidelity F = 0.997. The analysis fully accounts for spontaneous emission from intermediate and Rydberg states, including the Rydberg lifetime in a room temperature environment, but does not include errors arising from laser noise. In conclusion, the gate protocols do not require individual addressing and are shown to be robust against Doppler shifts due to atomic motion.
Research Organization:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
ARL; Russian Foundation for Basic Research; Russian Science Foundation; USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0019465
OSTI ID:
1783195
Journal Information:
Physical Review A, Journal Name: Physical Review A Journal Issue: 6 Vol. 101; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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71 CLASSICAL AND QUANTUM MECHANICS
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