Tune-out and magic wavelengths, and electric quadrupole transition properties of the singly charged alkaline-earth metal ions

Kaur, Mandeep; Singh, Sukhjit; Sahoo, B. K.; Arora, Bindiya

doi:10.1016/j.adt.2021.101422

Cited by 3 publications

(6 citation statements)

References 70 publications

(168 reference statements)

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“…Furthermore, only one tune-out wavelength, i.e., λ T = 280.1136(2) nm for 3S 1/2 , could be compared with the result presented by Kaur et al in Ref. [55] and it is seen that our result is in good accord with this value.…”

Section: Tune-out Wavelengthssupporting

confidence: 81%

“…Hence, it was perceived that, out of 25 tune-out wavelengths for all states of Ca + ion, only seven of them lie within visible spectrum and, on comparison of different tune-out wavelengths for the 4S 1/2 and 3D 3/2 states of Ca + ion, it was determined that all of these results are supported by the results obtained in Refs. [40,55]. However, one of the tune-out wavelength located at 493.13(87) nm for the 3D 5/2 state of Ca + ion seems have 2% variation from the wavelength obtained by Kaur et al in Ref.…”

Section: Tune-out Wavelengthsmentioning

confidence: 61%

“…Additionally, during the comparison of these values with the results published in Refs. [40,55], it was determined that the tune-out wavelength at 417.04(6) nm for 5S 1/2 as well as λ T = 1018.91 (38) nm for the 4D 3/2 state agree well with the available results; howsoever, the tune-out wavelengths at 606.47 (53) nm and 593.0(2.0) nm for 4D 3/2 and 4D 5/2 states, respectively, show a discrepancy of less than 2%, which lies within the error bar of 5%.…”

Section: Tune-out Wavelengthsmentioning

confidence: 99%

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Magnetic Sublevel Independent Magic and Tune-Out Wavelengths of the Alkaline-Earth Ions

Jyoti

Kaur

Arora

et al. 2022

Atoms

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Light shift in a state due to the applied laser in an atomic system vanishes at tune-out wavelengths (λTs). Similarly, differential light shift in a transition vanishes at the magic wavelengths (λmagics). In many of the earlier studies, values of the electric dipole (E1) matrix elements were inferred precisely by combining measurements and calculations of λmagic. Similarly, the λT values of an atomic state can be used to infer the E1 matrix element, as it involves dynamic electric dipole (α) values of only one state whereas the λmagic values require evaluation of α values for two states. However, both the λmagic and λT values depend on angular momenta and their magnetic components (M) of states. Here, we report the λmagic and λT values of many S1/2 and D3/2,5/2 states, and transitions among these states of the Mg+, Ca+, Sr+ and Ba+ ions that are independent of M values. It is possible to infer a large number of E1 matrix elements of the above ions accurately by measuring these values and combining with our calculations.

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Section: Tune-out Wavelengthssupporting

confidence: 81%

Section: Tune-out Wavelengthsmentioning

confidence: 61%

Section: Tune-out Wavelengthsmentioning

confidence: 99%

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Magnetic Sublevel Independent Magic and Tune-Out Wavelengths of the Alkaline-Earth Ions

Jyoti

Kaur

Arora

et al. 2022

Atoms

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“…Qubits encoded in the ground S 1=2 and metastable D 5=2 states of Ca þ , Sr þ , or Ba þ fulfill this condition. The differential polarizabilities of these states can be tuned over a wide range by choosing the tweezer wavelength and Zeeman substate m j of the D 5=2 manifold [18]. Furthermore, it is beneficial to have no residual differential Stark shift at the center of the tweezer, as this may lead to dephasing of the qubits in case of laser intensity fluctuations.…”

mentioning

confidence: 99%

“…As a practical example, we consider the qubit states j0i ¼ jS 1=2 ; m j ¼ 1=2i and j1i ¼ jD 5=2 ;m j ¼ 3=2i in 40 Ca þ [21]. We obtain Φ ð1Þ j0i ¼ −Φ ð1Þ j1i at around λ 1 ¼ 770 nm [18]. The second requirement can be met by setting λ 2 ≈ 900 nm.…”

mentioning

confidence: 99%

Trapped Ion Quantum Computing Using Optical Tweezers and Electric Fields

et al. 2021

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We propose a new scalable architecture for trapped ion quantum computing that combines optical tweezers delivering qubit state-dependent local potentials with oscillating electric fields. Since the electric field allows for long-range qubit-qubit interactions mediated by the center-of-mass motion of the ion crystal alone, it is inherently scalable to large ion crystals. Furthermore, our proposed scheme does not rely on either ground-state cooling or the Lamb-Dicke approximation. We study the effects of imperfect cooling of the ion crystal, as well as the role of unwanted qubit-motion entanglement, and discuss the prospects of implementing the state-dependent tweezers in the laboratory.

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