Precision characterization of the 
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 state and the quadratic Zeeman coefficient in 
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Tan, Ting Rei; Edmunds, Claire; Milne, Alistair; Biercuk, Michael J.; Hempel, Cornelius

doi:10.1103/physreva.104.l010802

Cited by 6 publications

(5 citation statements)

References 45 publications

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“…In this work, we introduce two additional lasers for the purpose of state detection: a 411 nm laser 4 for electron shelving from 2 S 1/2 to 2 D 5/2 [35,45,[47][48][49], and 4 Moglabs LDL-202 with a Fast Servo Controller (FSC) a 760 nm laser [50][51][52] for repumping from the longlived 2 F 7/2 state (τ ≈ 5.4 years [53]) via 1 D[3/2] 3/2 . The 760 nm laser replaces a 638 nm laser [54] commonly used for this purpose and gives the benefit of substantially faster repumping.…”

Section: Methodsmentioning

confidence: 99%

“…been measured by our team, and we direct interested readers to Ref. [49] for full details on the measurements of the 411 nm transition, including the lifetime, branching ratios, quadratic Zeeman coefficient and hyperfine constant of the 2 D 5/2 states. From here on, we use simplified notation for the hyperfine levels in Dirac notation by omitting the F and m F labels, shortening the labels to |F, m F .…”

Section: Atomic Spectroscopymentioning

confidence: 99%

“…The probability of excitation from 2 F 7/2 is plotted in Fig.4(b),(c) for states prepared in different m F levels of (b) 2 D 5/2 |2 and (c) 2 D 5/2 |3 . The energy level diagrams in Fig.4(d),(e) show the potentially occupied 2 F 7/2 states populated through the dipole decay from (d) 2 D 5/2 |2, 0 or (e) 2 D 5/2 |3, 0 with the corresponding decay probabilities from the 2 D 5/2 levels[35,49], and the possible repump pathways from 2 F 7/2 |F, m F = 0 . As 2 F 7/2 ↔…”

mentioning

confidence: 99%

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Scalable hyperfine qubit state detection via electron shelving in the ${}^2$D$_{5/2}$ and ${}^2$F$_{7/2}$ manifolds in ${}^{171}$Yb$^{+}$

Edmunds,

Tan,

Milne

et al. 2020

Preprint

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Section: Methodsmentioning

confidence: 99%

Section: Atomic Spectroscopymentioning

confidence: 99%

mentioning

confidence: 99%

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Scalable hyperfine qubit state detection via electron shelving in the ${}^2$D$_{5/2}$ and ${}^2$F$_{7/2}$ manifolds in ${}^{171}$Yb$^{+}$

Edmunds,

Tan,

Milne

et al. 2020

Preprint

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“…To ensure that the state detection is not dependent on the probe light intensities seen by each individual ion, we apply a long 15 ms laser pulse to transfer the population out of the electronic ground state. Due to the lifetime of the state of about 7 ms [31][32][33], inefficient shelving is observed in the measurement. Figure 8(d) shows the extracted η t for each ion and a fitted gradient of dη t /dz = 9(11) × 10 −6 µm −1 .…”

Section: Scalability Of the Rf Sequence For Multi-ion Spectroscopymentioning

confidence: 99%

Robust and scalable rf spectroscopy in first-order magnetic sensitive states at second-long coherence time

Yeh,

Grensemann,

Dreissen

et al. 2023

New J. Phys.

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Trapped-ion quantum sensors have become highly sensitive tools for the search of physics beyond the Standard Model. Recently, stringent tests of local Lorentz-invariance (LLI) have been conducted with precision spectroscopy in trapped ions. We here elaborate on robust and scalable radio-frequency composite-pulse spectroscopy at second long coherence times in the magnetic sublevels of the long-lived 2 F 7/2 state of a trapped 172Yb+ ion which is scalable to spatially extended multi-ion systems. We compare two Ramsey-type composite rf pulse sequences, a generalized spin-echo (GSE) sequence and a sequence based on universal rotations with 10 rephasing pulses (UR10) that decouple the energy levels from magnetic field noise, enabling robust and accurate spectroscopy. Both sequences are characterized theoretically and experimentally in the spin-1/2 2 S 1/2 electronic ground state of 172Yb+ and results show that the UR10 sequence is 38 (13) times more robust against pulse duration (frequency detuning) errors than the GSE sequence. We extend our simulations to the eight-level manifold of the 2 F 7/2 state, which is highly sensitive to a possible violation of LLI, and show that the UR10 sequence can be used for high-fidelity Ramsey spectroscopy in noisy environments. The UR10 sequence is implemented experimentally in the 2 F 7/2 manifold and a coherent signal of up to 2.5s is reached. In reference [4] we have implemented this sequence and used it to perform the most stringent test of LLI in the electron-photon sector to date with a single Yb+ ion. Due to the robustness of the UR10 sequence, it can be applied on larger ion crystals to improve tests of Lorentz symmetry further. We demonstrate that the sequence can also be used to extract the quadrupole moment of the meta-stable 2 F 7/2 state, obtaining a value of Θ=-0.0298(38) e a 0 2 which is in agreement with the value deduced from clock measurements.

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“…This methodology could potentially be employed to determine the 6s 2 S 1/2 -6p 2 P 1/2 transition matrix element in Yb + in a similar fashion. Another approach to obtaining the transition matrix elements involves combining branching fractions with lifetimes [29,30], but the uncertainty of these measurements depends on the precision of the lifetimes and branching fractions.…”

Section: Introductionmentioning

confidence: 99%

Precision determination of dipole transition matrix elements with a single trapped ion

Guan

2023

Preprint

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In the field of quantum metrology, transition matrix elements are crucial for accurately evaluating the black-body radiation shift and the parity-violating amplitude of the clock transition, and can be used as probes to test quantum electrodynamic effects, especially at the $10^{-3}$-$10^{-4}$ level. We developed a universal experimental approach to precise determination of the dipole transition matrix element with a energy level of two transition channels at various atomic species by using the quantum shelving technique. In which, the time-increased pulses were utilized to induce quantum shelving, and the resulting shelving probabilities were determined by counting the scattered photons from the excited $^{2}\!P_{1/2}$ state to the $^{2}\!S_{1/2}$ ground state. Using the scattered photons offers several advantages, including insensitivity to fluctuations in magnetic field, laser intensity, and frequency detuning. An intensity-alternating sequence to minimize detection noise and a real-time approach for background photon correction were implemented in parallel. We applied this method to single Yb$^+$ ion, and determined the $6p~^{2}\!P_{1/2}$ - $5d~^{2}\!D_{3/2}$ transition matrix element of 2.9395(21)~$ea_{0}$, which represents an order of magnitude improvement over previous determination. By combining our result with the $6p~^{2}\!P_{1/2}$ lifetime of 8.12(2)~ns, we extracted the $6s~^{2}\!S_{1/2}$ - $6p~^{2}\!P_{1/2}$ transition matrix element to be 2.4695(31)~$ea_{0}$.

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Precision characterization of the D5/22 state and the quadratic Zeeman coefficient in Yb+17

Cited by 6 publications

References 45 publications

Scalable hyperfine qubit state detection via electron shelving in the ${}^2$D$_{5/2}$ and ${}^2$F$_{7/2}$ manifolds in ${}^{171}$Yb$^{+}$

Scalable hyperfine qubit state detection via electron shelving in the ${}^2$D$_{5/2}$ and ${}^2$F$_{7/2}$ manifolds in ${}^{171}$Yb$^{+}$

Robust and scalable rf spectroscopy in first-order magnetic sensitive states at second-long coherence time

Precision determination of dipole transition matrix elements with a single trapped ion

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