arXiv:2305.15200 · Physical Review A

Reducing Rydberg-state dc polarizability by microwave dressing

J. C. Bohorquez, Ravikumar Chinnarasu, Joshua Isaacs, Donald W. Booth, M. Beck, R. McDermott, Mark E. Saffman

Published Aug 9, 2023• 10 citations

Abstract

The authors demonstrate a reduction of the dc polarizability of cesium atom Rydberg states in a 77-K environment utilizing microwave field dressing. The results could be useful for stabilizing Rydberg resonances against varying dc fields present near surfaces and potentially enabling the development of hybrid Rydberg-atom--superconducting-resonator quantum gates.

DOI: 10.1103/physreva.108.022805

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arXiv:2305.15200 · Physical Review A

Reducing Rydberg-state dc polarizability by microwave dressing

J. C. Bohorquez, Ravikumar Chinnarasu, Joshua Isaacs, Donald W. Booth, M. Beck, R. McDermott, Mark E. Saffman

Published Aug 9, 2023• 10 citations

arXiv HTML PDF

Abstract

DOI: 10.1103/physreva.108.022805

Related papers

Reducing the sensitivity of Rydberg atoms to dc electric fields using two-frequency ac field dressing

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We propose a method for reducing the sensitivity of atomic ground-to-Rydberg transitions to stray dc electric fields, using microwave-induced dressing of Rydberg states. Calculations are presented for the Cs $90{S}_{1/2}$ and $90{P}_{3/2}$ states. With zero dc bias electric field, a two-frequency ac field is used to simultaneously reduce the sensitivity of both states to dc field variations. The sensitivity reduction is a factor of 95 for the $90{S}_{1/2}$ state and a factor of 1600 for the $90{P}_{3/2},{m}_{J}=3/2$ state. We also show how the two-frequency ac field can be used to cancel both second- and fourth-order terms in the polarizability of a single Rydberg state. These results are relevant to improving the stability of experiments that seek to excite Rydberg atoms in the proximity of charged surfaces.We propose a method for reducing the sensitivity of atomic ground-to-Rydberg transitions to stray dc electric fields, using microwave-induced dressing of Rydberg states. Calculations are presented for the Cs $90{S}_{1/2}$ and $90{P}_{3/2}$ states. With zero dc bias electric field, a two-frequency ac field is used to simultaneously reduce the sensitivity of both states to dc field variations. The sensitivity reduction is a factor of 95 for the $90{S}_{1/2}$ state and a factor of 1600 for the $90{P}_{3/2},{m}_{J}=3/2$ state. We also show how the two-frequency ac field can be used to cancel both second- and fourth-order terms in the polarizability of a single Rydberg state. These results are relevant to improving the stability of experiments that seek to excite Rydberg atoms in the proximity of charged surfaces.

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Microwave dressing of Rydberg ions creates tunable eigenstates with controllable polarizability and interaction strength, but coherent navigation between these states has remained elusive. Here, we report on the first demonstration of coherent population transfer between different Rydberg states of a trapped ion. We investigate both microwave-mediated Rabi oscillations between Rydberg S and P states and adiabatic transfer between microwave-dressed Rydberg states. Between Rydberg S and P states we achieve a population transfer efficiency of 91.5(5)% in a single microwave $π$ -pulse. Microwave dressing hybridizes the S and P Rydberg states into new eigenstates with tunable polarizability, enabling both noise-resilient zero-polarizability states and maximally interacting states. We demonstrate adiabatic transfer between these zero-polarizability and maximally dressed states, enabling experiments that combine noise-resilient excitation with strong dipole-dipole interactions and Förster resonance control within a single measurement sequence.Microwave dressing of Rydberg ions creates tunable eigenstates with controllable polarizability and interaction strength, but coherent navigation between these states has remained elusive. Here, we report on the first demonstration of coherent population transfer between different Rydberg states of a trapped ion. We investigate both microwave-mediated Rabi oscillations between Rydberg S and P states and adiabatic transfer between microwave-dressed Rydberg states. Between Rydberg S and P states we achieve a population transfer efficiency of 91.5(5)% in a single microwave $π$-pulse. Microwave dressing hybridizes the S and P Rydberg states into new eigenstates with tunable polarizability, enabling both noise-resilient zero-polarizability states and maximally interacting states. We demonstrate adiabatic transfer between these zero-polarizability and maximally dressed states, enabling experiments that combine noise-resilient excitation with strong dipole-dipole interactions and Förster resonance control within a single measurement sequence.

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Jan 1, 20201 citation

90{S}_{1/2}

and

90{P}_{3/2}

states. With zero dc bias electric field, a two-frequency ac field is used to simultaneously reduce the sensitivity of both states to dc field variations. The sensitivity reduction is a factor of 95 for the

90{S}_{1/2}

state and a factor of 1600 for the

90{P}_{3/2},{m}_{J}=3/2

state. We also show how the two-frequency ac field can be used to cancel both second- and fourth-order terms in the polarizability of a single Rydberg state. These results are relevant to improving the stability of experiments that seek to excite Rydberg atoms in the proximity of charged surfaces.

π

-pulse. Microwave dressing hybridizes the S and P Rydberg states into new eigenstates with tunable polarizability, enabling both noise-resilient zero-polarizability states and maximally interacting states. We demonstrate adiabatic transfer between these zero-polarizability and maximally dressed states, enabling experiments that combine noise-resilient excitation with strong dipole-dipole interactions and Förster resonance control within a single measurement sequence.

A nonresonant microwave dressing field at

38.465\phantom{\rule{0.28em}{0ex}}\mathrm{GHz}

was used to eliminate the static electric dipole moment difference between the

49{s}_{1/2}

and

48{s}_{1/2}

Rydberg states of

{}^{87}

Rb in dc fields of $\ensuremath{\approx}1\phantom{\rule{0.28em}{0ex}}\mathrm{V}/\mathrm{cm}$. The reduced susceptibility to electric field fluctuations was measured using two-photon microwave spectroscopy. An anomalous spectral doublet is attributed to polarization ellipticity in the dressing field. The demonstrated ability to inhibit static dipole moment differences, while retaining sensitivity to high frequency fields, is applicable to sensors and/or quantum devices using Rydberg atoms.