Frontiers in Optics

Controlling Atomic Qubits with Electromagnetic Vortices

Andrei V. Afanasev

Published Jan 1, 2020• 0 citations

Abstract

We predict behavior of atomic qubits in response to electromagnetic vortices, known as twisted photons: They can induce △m=±2 transitions between atomic levels and Zeeman sub-levels, while suppressing △m=±1 transitions only allowed for plane waves.

DOI: 10.1364/fio.2020.fw5b.1

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Frontiers in Optics

Controlling Atomic Qubits with Electromagnetic Vortices

Andrei V. Afanasev

Published Jan 1, 2020• 0 citations

Publisher

Abstract

DOI: 10.1364/fio.2020.fw5b.1

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Zhiguo Wang, Yu-Xin Fu, Yue Song +4 more

Polarization dependence of the enhancement and suppression of four-wave mixing (FWM) in a multi-Zeeman level atomic system is investigated both theoretically and experimentally.A dressing field applied to the adjacent transition can cause energy level splitting.Therefore, it can control the enhancement and suppression of the FWM processes in the system due to the effect of electromagnetically induced transparency.The results show that the pumping beams with different polarizations select the transitions between different Zeeman levels that, in turn, affect the enhancement and suppression efficiencies of FWM.Polarization dependence of the enhancement and suppression of four-wave mixing (FWM) in a multi-Zeeman level atomic system is investigated both theoretically and experimentally.A dressing field applied to the adjacent transition can cause energy level splitting.Therefore, it can control the enhancement and suppression of the FWM processes in the system due to the effect of electromagnetically induced transparency.The results show that the pumping beams with different polarizations select the transitions between different Zeeman levels that, in turn, affect the enhancement and suppression efficiencies of FWM.

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arXiv:2306.17620Physical Review AOct 23, 202314 citations

E1M1

two-photon excitation rate. This long-lived clock transition is thus immune to nonscalar electromagnetic perturbations. Zeeman components of the

M2

magnetic quadrupole $^{1}S_{0}\ensuremath{\rightarrow}^{3}P_{2}$ transition considered for quantum computation and simulation are now selectively driven by transverse or longitudinal field gradients with vanishing electric fields. These field gradients are manipulated by the mutual action of orbital and spin angular momentum of the light beam and are used in presence of tunable vector and tensor polarizabilities. A combination of these two different twisted-light induced clock transitions within a single quantum system, at the same magic wavelength and in presence of a common thermal environment, significantly reduces systematic uncertainties. Furthermore, it generates an optical synthetic frequency which efficiently limits the blackbody radiation shift and its variations at room temperature. Engineering light-matter interaction by optical vortices merged with composite pulses will ultimately benefit experimental atomic and molecular platforms targeting an optimal coherent control of quantum states, reliant quantum simulation, novel approaches to atomic interferometry, and precision tests of fundamental theories in physics and high-accuracy optical metrology.