Controlling Rydberg Excitations Using Ion-Core Transitions in Alkaline-Earth Atom-Tweezer Arrays

Burgers, A. P.; Ma, Shuo; Saskin, Sam; Wilson, Jack T.; Alarcón, Miguel A; Greene, Chris H.; Thompson, J. D.

doi:10.1103/prxquantum.3.020326

Cited by 26 publications

(14 citation statements)

References 41 publications

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“…From fits of the measured excitation energies to Eq. 1 we get the quantum defects δ 0,0 = 4.2721 (25) and δ 1,1 = 3.9535 (9), where the value for the 6sns 1 S 0 series is again in good agreement with Ref. [21].…”

Section: Statesupporting

confidence: 82%

“…For example, for Rydberg states with low angular momentum so-called isolated-core excitation, of the second electron can lead to auto-ionization of the Rydberg electron. This phenomenon can be used to control Rydberg excitations [8,9] or directly image Rydberg atoms without the need to apply high-voltage pulses [10,11]. Another attractive application is trapping of Rydberg atoms [12].…”

Section: Introductionmentioning

confidence: 99%

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Trap-loss spectroscopy of Rydberg states in ytterbium

Halter¹,

Miethke²,

Sillus³

et al. 2022

Preprint

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We present an experimental study of the Rydberg 1 S 0 -and 1 P 1 -series of ytterbium for principal quantum numbers in the range of n = 70 to 90. The study is performed using trap loss spectroscopy in a magneto-optical trap operating on the 6 1 S 0 → 6 1 P 1 transition at 399 nm. Compared to the commonly used Rydberg spectroscopy method using field-ionization and ion detection, trap loss spectroscopy is significantly simpler and requires a less sophisticated experimental setup. Using this method we determine relative values of the scalar and tensor electric polarizabilities of both, 6sns 1 S 0 -and 6snp 1 P 1 Rydberg states.

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Section: Statesupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Trap-loss spectroscopy of Rydberg states in ytterbium

Halter¹,

Miethke²,

Sillus³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…It can be suppressed by increasing Ω (up to the limit imposed by V r r ), but in practice, Ω is often constrained by the available laser power. We note that the Yb 3 S 1 series has similar interaction strength 28 , 38 and lifetime 32 to Rydberg series in alkali atoms.…”

Section: Resultsmentioning

confidence: 67%

“…This transition is highly cyclic, with a branching ratio of ≈1 × 10 −7 back into Q 41 . Population remaining in Rydberg states at the end of a gate can be converted into Yb + ions by autoionization on the 6 s → 6 p 1/2 Yb + transition at 369 nm 38 . The resulting slow-moving Yb + ions can be detected using fluorescence on the same Yb + transition, as has been previously demonstrated for ensembles of Sr + ions in ultracold strontium gases 42 (subspace B in Fig.…”

Section: Resultsmentioning

confidence: 99%

Erasure conversion for fault-tolerant quantum computing in alkaline earth Rydberg atom arrays

Kolkowitz

Puri

et al. 2022

Nat Commun

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Executing quantum algorithms on error-corrected logical qubits is a critical step for scalable quantum computing, but the requisite numbers of qubits and physical error rates are demanding for current experimental hardware. Recently, the development of error correcting codes tailored to particular physical noise models has helped relax these requirements. In this work, we propose a qubit encoding and gate protocol for 171Yb neutral atom qubits that converts the dominant physical errors into erasures, that is, errors in known locations. The key idea is to encode qubits in a metastable electronic level, such that gate errors predominantly result in transitions to disjoint subspaces whose populations can be continuously monitored via fluorescence. We estimate that 98% of errors can be converted into erasures. We quantify the benefit of this approach via circuit-level simulations of the surface code, finding a threshold increase from 0.937% to 4.15%. We also observe a larger code distance near the threshold, leading to a faster decrease in the logical error rate for the same number of physical qubits, which is important for near-term implementations. Erasure conversion should benefit any error correcting code, and may also be applied to design new gates and encodings in other qubit platforms.

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“…Advances in optical trapping with tweezers [43][44][45][46][47] and ground state cooling [48][49][50] provide both a freely programmable geometric arrangement [51,52], including coherent transport of atoms [53], as well as scalability to hundreds of particles [54,55]. Experiments with circular Rydberg states [56][57][58] promise longer single particle lifetimes [59], with a future potential for scaling to even larger system sizes [60,61]. We note, however, that up until now Rydberg platforms have mainly focused on quantum simulation of spin-1/2 systems.…”

Section: Introductionmentioning

confidence: 99%

High-dimensional SO(4)-symmetric Rydberg manifolds for quantum simulation

Kruckenhauser¹,

Bijnen²,

Zache³

et al. 2022

Preprint

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We develop a toolbox for manipulating arrays of Rydberg atoms prepared in high-dimensional hydrogen-like manifolds in the regime of linear Stark and Zeeman effect. We exploit the SO(4) symmetry to characterize the action of static electric and magnetic fields as well as microwave and optical fields on the well-structured manifolds of states with principal quantum number n. This enables us to construct generalized large-spin Heisenberg models for which we develop state-preparation and readout schemes. Due to the available large internal Hilbert space, these models provide a natural framework for the quantum simulation of Quantum Field Theories, which we illustrate for the case of the sine-Gordon and massive Schwinger models. Moreover, these high-dimensional manifolds also offer the opportunity to perform quantum information processing operations for qudit-based quantum computing, which we exemplify with an entangling gate and a state-transfer protocol for the states in the neighborhood of the circular Rydberg level.

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Controlling Rydberg Excitations Using Ion-Core Transitions in Alkaline-Earth Atom-Tweezer Arrays

Cited by 26 publications

References 41 publications

Trap-loss spectroscopy of Rydberg states in ytterbium

Trap-loss spectroscopy of Rydberg states in ytterbium

Erasure conversion for fault-tolerant quantum computing in alkaline earth Rydberg atom arrays

High-dimensional SO(4)-symmetric Rydberg manifolds for quantum simulation

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