Two-qubit gates using adiabatic passage of the Stark-tuned Förster resonances in Rydberg atoms

Autor:	E. A. Kuznetsova, Mark Saffman, V. M. Entin, D. B. Tretyakov, I. I. Ryabtsev, I. I. Beterov, E. A. Yakshina, S. Bergamini
Jazyk:	angličtina
Rok vydání:	2016
Předmět:	Physics Quantum Physics Energetic neutral atom Phase (waves) Resonance 01 natural sciences 010309 optics symbols.namesake Qubit 0103 physical sciences Rydberg atom Quantum system Rydberg formula symbols Physics::Atomic Physics Atomic physics 010306 general physics Adiabatic process
ISSN:	2469-9934
Popis:	We propose schemes of controlled-Z and controlled-NOT gates with ultracold neutral atoms based on deterministic phase accumulation during double adiabatic passage of the Stark-tuned F\"{o}rster resonance of Rydberg states. The effect of deterministic phase accumulation during double adiabatic passage in a two-level quantum system has been analyzed in detail. Adiabatic rapid passage using nonlinearly chirped pulses with rectangle intensity profile has been discussed. Nonlinear time dependence of the energy detuning from the F\"{o}rster resonance is used to achieve a high fidelity of population transfer between Rydberg states. Fidelity of two-qubit gates has been studied with an example of the $90S+96S\to 90P+95P$ Stark-tuned F\"{o}rster resonance in Cs Rydberg atoms. Comment: 10 pages, 7 figures. Version 2 revised according to the referees' comments. Fig.1 replaced in Version 3. Accepted to PRA
Databáze:	OpenAIRE
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