TY - JOUR

T1 - Coherence of three-body Förster resonances in Rydberg atoms

AU - Ryabtsev, I. I.

AU - Beterov, I. I.

AU - Tretyakov, D. B.

AU - Yakshina, E. A.

AU - Entin, V. M.

AU - Cheinet, P.

AU - Pillet, P.

PY - 2018/11/13

Y1 - 2018/11/13

N2 - We have observed recently the Stark-tuned three-body Förster resonances 3×nP3/2(|M|)→nS1/2+(n+1)S1/2+nP3/2(|M∗|) at long-range interactions of a few cold Rb Rydberg atoms [D. B. Tretyakov, Phys. Rev. Lett. 119, 173402 (2017)PRLTAO0031-900710.1103/PhysRevLett.119.173402]. The three-body resonance appears at a different dc electric field with respect to the ordinary two-body resonance 2×nP3/2(|M|)→nS1/2+(n+1)S1/2 and corresponds to a transition when the three interacting atoms change their states simultaneously (two atoms go to the S states, and the third atom remains in the P state but changes its moment projection), with the negligible contribution of the two-body resonance to the population transfer. It thus has a Borromean character and represents an effective three-body operator, which can be used to directly control the three-body interactions in quantum simulations and quantum gates implemented with Rydberg atoms. In this paper we theoretically investigate the coherence of such three-body resonances and we show that high-contrast Rabi-like population oscillations are possible for the localized Rydberg atoms in a certain spatial configuration. This paves the way to implementing three-qubit quantum gates and quantum simulations based on three-body Rydberg interactions.

AB - We have observed recently the Stark-tuned three-body Förster resonances 3×nP3/2(|M|)→nS1/2+(n+1)S1/2+nP3/2(|M∗|) at long-range interactions of a few cold Rb Rydberg atoms [D. B. Tretyakov, Phys. Rev. Lett. 119, 173402 (2017)PRLTAO0031-900710.1103/PhysRevLett.119.173402]. The three-body resonance appears at a different dc electric field with respect to the ordinary two-body resonance 2×nP3/2(|M|)→nS1/2+(n+1)S1/2 and corresponds to a transition when the three interacting atoms change their states simultaneously (two atoms go to the S states, and the third atom remains in the P state but changes its moment projection), with the negligible contribution of the two-body resonance to the population transfer. It thus has a Borromean character and represents an effective three-body operator, which can be used to directly control the three-body interactions in quantum simulations and quantum gates implemented with Rydberg atoms. In this paper we theoretically investigate the coherence of such three-body resonances and we show that high-contrast Rabi-like population oscillations are possible for the localized Rydberg atoms in a certain spatial configuration. This paves the way to implementing three-qubit quantum gates and quantum simulations based on three-body Rydberg interactions.

KW - QUANTUM

KW - INFORMATION

UR - http://www.scopus.com/inward/record.url?scp=85057062954&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.98.052703

DO - 10.1103/PhysRevA.98.052703

M3 - Article

AN - SCOPUS:85057062954

VL - 98

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 5

M1 - 052703

ER -