TY - JOUR

T1 - Three-body Förster resonance of a new type in Rydberg atoms

AU - Cheinet, P.

AU - Pham, K. L.

AU - Pillet, P.

AU - Beterov, I. I.

AU - Ashkarin, I. N.

AU - Tretyakov, D. B.

AU - Yakshina, E. A.

AU - Entin, V. M.

AU - Ryabtsev, I. I.

PY - 2020/3/1

Y1 - 2020/3/1

N2 - The three-body Förster resonances 3 nP3/2(|M|) →nS1/2 + (n + 1)S1/2 + nP3/2(|M∗|), controlled by a constant electric field, were realised earlier by the authors in an ensemble of several cold Rydberg Rb atoms. One of the drawbacks of such resonances for potential application in three-qubit quantum gates is the proximity of the two-body Förster resonance 2 nP3/2 → nS1/2 + (n + 1)S1/2, as well as the possibility of their implementation only for states with values of the principal quantum numbers n 38. A three-body resonance of a new type, 3 nP3/2 → nS1/2 + (n + 1)S1/2 + nP1/2, which can be realised for arbitrary n, is proposed and analysed. Its specific feature is also that the third atom transits into a state with a different total angular momentum J = 1/2, which has no Stark structure, so that the two-body resonance is completely absent. Numerical calculations showed that for not too strong interaction, it is possible to observe coherent three-body oscillations of the populations of collective states, which is of interest for developing new schemes of three-qubit quantum gates controlled by an electric field.

AB - The three-body Förster resonances 3 nP3/2(|M|) →nS1/2 + (n + 1)S1/2 + nP3/2(|M∗|), controlled by a constant electric field, were realised earlier by the authors in an ensemble of several cold Rydberg Rb atoms. One of the drawbacks of such resonances for potential application in three-qubit quantum gates is the proximity of the two-body Förster resonance 2 nP3/2 → nS1/2 + (n + 1)S1/2, as well as the possibility of their implementation only for states with values of the principal quantum numbers n 38. A three-body resonance of a new type, 3 nP3/2 → nS1/2 + (n + 1)S1/2 + nP1/2, which can be realised for arbitrary n, is proposed and analysed. Its specific feature is also that the third atom transits into a state with a different total angular momentum J = 1/2, which has no Stark structure, so that the two-body resonance is completely absent. Numerical calculations showed that for not too strong interaction, it is possible to observe coherent three-body oscillations of the populations of collective states, which is of interest for developing new schemes of three-qubit quantum gates controlled by an electric field.

KW - Rydberg atoms

KW - interaction

KW - Forster resonance

UR - http://www.scopus.com/inward/record.url?scp=85084460585&partnerID=8YFLogxK

U2 - 10.1070/QEL17253

DO - 10.1070/QEL17253

M3 - Article

AN - SCOPUS:85084460585

VL - 50

SP - 213

EP - 219

JO - Quantum Electronics

JF - Quantum Electronics

SN - 1063-7818

IS - 3

ER -