# Neutral-Atom & Trapped-Ion Quantum Computing Domain: Quantum Computing & Information · 242 papers indexed · newest 2026-10-27 Rydberg atom arrays, reconfigurable logical processors, QCCD trapped-ion architectures, high-fidelity gates and mid-circuit measurement. Key concepts: neutral atom, Rydberg, trapped ion, optical tweezer, logical processor, QCCD, atom array ## Most influential - **[High-fidelity parallel entangling gates on a neutral-atom quantum computer](https://space-kitty.com/papers/arxiv:2304.05420)**. Simon J. Evered, Dolev Bluvstein, Marcin Kalinowski et al. · 2023 · Nature (arXiv:2304.05420 · doi:10.1038/s41586-023-06481-y · 521 citations). Source: > The ability to perform entangling quantum operations with low error rates in a scalable fashion is a central element of useful quantum information processing. Neutral atom arrays have recently emerged as a promising quantum computing platform, featuring coherent control over hundreds of qubits and any-to-any gate connectivity in a flexible, dynamically reconfigurable architecture. The major outstanding challenge has been to reduce errors in entangling operations mediated through Rydberg interactions. Here we report the realization of two-qubit entangling gates with 99.5% fidelity on up to 60 a… - **[Quantum computing with atomic qubits and Rydberg interactions: progress and challenges](https://space-kitty.com/papers/arxiv:1605.05207)**. Mark E. Saffman · 2016 · Journal of Physics B Atomic Molecular and Optical Physics (arXiv:1605.05207 · doi:10.1088/0953-4075/49/20/202001 · 698 citations). Source: > We present a review of quantum computation with neutral atom qubits. After an overview of architectural options and approaches to preparing large qubit arrays we examine Rydberg mediated gate protocols and fidelity for two- and multi-qubit interactions. Quantum simulation and Rydberg dressing are alternatives to circuit based quantum computing for exploring many body quantum dynamics. We review the properties of the dressing interaction and provide a quantitative figure of merit for the complexity of the coherent dynamics that can be accessed with dressing. We conclude with a summary of the cu… - **[High-fidelity gates and mid-circuit erasure conversion in an atomic qubit](https://space-kitty.com/papers/arxiv:2305.05493)**. Shuo Ma, Genyue Liu, Pai Peng et al. · 2023 · Nature (arXiv:2305.05493 · doi:10.1038/s41586-023-06438-1 · 228 citations). Source: > The development of scalable, high-fidelity qubits is a key challenge in quantum information science. Neutral atom qubits have progressed rapidly in recent years, demonstrating programmable processors and quantum simulators with scaling to hundreds of atoms. Exploring new atomic species, such as alkaline earth atoms, or combining multiple species can provide new paths to improving coherence, control and scalability. For example, for eventual application in quantum error correction, it is advantageous to realize qubits with structured error models, such as biased Pauli errors or conversion of er… - **[Erasure conversion for fault-tolerant quantum computing in alkaline earth Rydberg atom arrays](https://space-kitty.com/papers/arxiv:2201.03540)**. Yue Wu, Shimon Kolkowitz, Shruti Puri et al. · 2022 · Nature Communications (arXiv:2201.03540 · doi:10.1038/s41467-022-32094-6 · 197 citations). Source: > 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 ${}^{171}$Yb 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 el… - **[Cooling a single atom in an optical tweezer to its quantum ground state](https://space-kitty.com/papers/arxiv:1209.2087)**. Adam M. Kaufman, Brian J. Lester, Cindy A. Regal · 2012 · Physical Review X 2, 041014 (2012) (arXiv:1209.2087 · doi:10.1103/physrevx.2.041014 · 321 citations). Source: > We report cooling of a single neutral atom to its three-dimensional vibrational ground state in an optical tweezer. After employing Raman sideband cooling for tens of milliseconds, we measure via sideband spectroscopy a three-dimensional ground-state occupation of ~90%. We further observe coherent control of the spin and motional state of the trapped atom. Our demonstration shows that an optical tweezer, formed simply by a tightly focused beam of light, creates sufficient confinement for efficient sideband cooling. This source of ground-state neutral atoms will be instrumental in numerous quan… - **[Trapped arrays of alkaline earth Rydberg atoms in optical tweezers](https://space-kitty.com/papers/arxiv:1912.08754)**. Jack Wilson, Samuel Saskin, Yijian Meng et al. · 2019 · Phys. Rev. Lett. 128, 033201 (2022) (arXiv:1912.08754 · doi:10.1103/physrevlett.128.033201 · 110 citations). Source: > Neutral atom qubits with Rydberg-mediated interactions are a leading platform for developing large-scale coherent quantum systems. In the majority of experiments to date, the Rydberg states are not trapped by the same potential that confines ground state atoms, resulting in atom loss and constraints on the achievable interaction time. In this work, we demonstrate that the Rydberg states of an alkaline earth atom, ytterbium, can be stably trapped by the same red-detuned optical tweezer that also confines the ground state, by leveraging the polarizability of the Yb$^+$ ion core. Using the previo… - **[Entangling two transportable neutral atoms via local spin exchange](https://space-kitty.com/papers/arxiv:1507.05586)**. Adam M. Kaufman, Brian Lester, Michael Foss‐Feig et al. · 2015 · Nature (arXiv:1507.05586 · doi:10.1038/nature16073 · 142 citations). Source: > To advance quantum information science a constant pursuit is the search for physical systems that meet the stringent requirements for creating and preserving quantum entanglement. In atomic physics, robust two-qubit entanglement is typically achieved by strong, long-range interactions in the form of Coulomb interactions between ions or dipolar interactions between Rydberg atoms. While these interactions allow fast gates, atoms subject to these interactions must overcome the associated coupling to the environment and cross-talk among qubits. Local interactions, such as those requiring significa… - **[Narrow-line cooling and imaging of Ytterbium atoms in an optical tweezer array](https://space-kitty.com/papers/arxiv:1810.10517)**. Samuel Saskin, Jack Wilson, Brandon Grinkemeyer et al. · 2018 · Phys. Rev. Lett. 122, 143002 (2019) (arXiv:1810.10517 · doi:10.1103/physrevlett.122.143002 · 168 citations). Source: > Engineering controllable, strongly interacting many-body quantum systems is at the frontier of quantum simulation and quantum information processing. Arrays of laser-cooled neutral atoms in optical tweezers have emerged as a promising platform, because of their flexibility and the potential for strong interactions via Rydberg states. Existing neutral atom array experiments utilize alkali atoms, but alkaline-earth atoms offer many advantages in terms of coherence and control, and also open the door to new applications in precision measurement and timekeeping. In this work, we present a techniqu… - **[Quantum Computing with Circular Rydberg Atoms](https://space-kitty.com/papers/arxiv:2103.12744)**. Sam R. Cohen, Jeff D. Thompson · 2021 · PRX Quantum (arXiv:2103.12744 · doi:10.1103/prxquantum.2.030322 · 94 citations). Source: > Rydberg atom arrays are a leading platform for quantum computing and simulation, combining strong interactions with highly coherent operations and flexible geometries. However, the achievable fidelities are limited by the finite lifetime of the Rydberg states, as well as technical imperfections such as atomic motion. In this work, we propose a novel approach to Rydberg atom arrays using long-lived circular Rydberg states in optical traps. Based on the extremely long lifetime of these states, exceeding seconds in cryogenic microwave cavities that suppress radiative transitions, and gate protoco… - **[Spectroscopy and modeling of $^{171}$Yb Rydberg states for high-fidelity two-qubit gates](https://space-kitty.com/papers/arxiv:2406.01482)**. Michael Peper, Yiyi Li, Daniel Y. Knapp et al. · 2024 · Physical Review X (arXiv:2406.01482 · doi:10.1103/physrevx.15.011009 · 56 citations). Source: > Highly excited Rydberg states and their interactions play an important role in quantum computing and simulation. These properties can be predicted accurately for alkali atoms with simple Rydberg level structures. However, an extension of these methods to more complex atoms such as alkaline-earth atoms has not been demonstrated or experimentally validated. Here, we present multichannel quantum defect (MQDT) models for highly excited $^{174}$Yb and $^{171}$Yb Rydberg states with $L \\leq 2$. The models are developed using a combination of existing literature data and new, high-precision laser and… - **[Generation and manipulation of Schrödinger cat states in Rydberg atom arrays](https://space-kitty.com/papers/arxiv:1905.05721)**. Ahmed Omran, Harry Levine, Alexander Keesling et al. · 2019 · Science 365, 570-574 (2019) (arXiv:1905.05721 · doi:10.1126/science.aax9743 · 634 citations). Source: > Quantum entanglement involving coherent superpositions of macroscopically distinct states is among the most striking features of quantum theory, but its realization is challenging, since such states are extremely fragile. Using a programmable quantum simulator based on neutral atom arrays with interactions mediated by Rydberg states, we demonstrate the deterministic generation of 'Schrödinger cat' states of the Greenberger-Horne-Zeilinger (GHZ) type with up to 20 qubits. Our approach is based on engineering the energy spectrum and using optimal control of the many-body system. We further demon… - **[Quantum simulation of transverse Ising models with Rydberg atoms](https://space-kitty.com/papers/doi:10.1088/2058-9565/aa9c59)**. Peter Schauß · 2017 · Quantum Science and Technology (doi:10.1088/2058-9565/aa9c59 · 95 citations). Source: - **[Coherent Control of the Fine-Structure Qubit in a Single Alkaline-Earth Atom](https://space-kitty.com/papers/arxiv:2401.10679)**. Govind Unnikrishnan, P. Ilzhöfer, A. Scholz et al. · 2024 · Physical Review Letters (arXiv:2401.10679 · doi:10.1103/physrevlett.132.150606 · 48 citations). Source: > We report on the first realization of a novel neutral atom qubit encoded in the metastable fine-structure states ${^3\\rm{P}\_0}$ and ${^3\\rm{P}\_2}$ of single $^{88}$Sr atoms trapped in an optical tweezer. Raman coupling of the qubit states promises rapid single-qubit rotations on par with the fast Rydberg-mediated two-body gates. We demonstrate preparation, read-out, and coherent control of the qubit. In addition to driving Rabi oscillations bridging an energy gap of more than 17 THz using a pair of phase-locked clock lasers, we also carry out Ramsey spectroscopy to extract the transverse qubit… - **[Optimizing Rydberg Gates for Logical-Qubit Performance](https://space-kitty.com/papers/arxiv:2210.06879)**. Sven Jandura, Jeff D. Thompson, Guido Pupillo · 2023 · PRX Quantum (arXiv:2210.06879 · doi:10.1103/prxquantum.4.020336 · 53 citations). Source: > Robust gate sequences are widely used to reduce the sensitivity of gate operations to experimental imperfections. Typically, the optimization minimizes the average gate error, however, recent work in quantum error correction has demonstrated that the performance of encoded logical qubits is sensitive to not only the average error rate, but also the type of errors that occur. Here, we present a family of Rydberg blockade gates for neutral atom qubits that are robust against two common, major imperfections: intensity inhomogeneity and Doppler shifts. These gates outperform existing gates for mod… - **[High-rate quantum LDPC codes for long-range-connected neutral atom registers](https://space-kitty.com/papers/arxiv:2404.13010)**. Laura Pecorari, Sven Jandura, Gavin Keith Brennen et al. · 2025 · Nature Communications (arXiv:2404.13010 · doi:10.1038/s41467-025-56255-5 · 30 citations). Source: > High-rate quantum error correcting (QEC) codes with moderate overheads in qubit number and control complexity are highly desirable for achieving fault-tolerant quantum computing. Recently, quantum error correction has experienced significant progress both in code development and experimental realizations, with neutral atom qubit architecture rapidly establishing itself as a leading platform in the field. Scalable quantum computing will require processing with QEC codes that have low qubit overhead and large error suppression, and while such codes do exist, they involve a degree of non-locality… ## Newest - **[Kinetic Slush in Dissipative Rydberg Arrays](https://space-kitty.com/papers/arxiv:2610.36661)**. Hufeng Wen, Ya-Xin Xiang, Qun-Li Lei et al. · 2026 (arXiv:2610.36661). Source: - **[Correlation-sensitive magic-state distillation from spin-squeezed neutral atoms](https://space-kitty.com/papers/arxiv:2610.36963)**. Ximo Wang, Ruyue Guo, Xinbo Li et al. · 2026 (arXiv:2610.36963). Source: - **[From QCCD Trapped-Ion Hardware to Quantum Compilers: Capabilities, Architectures, and Compilation](https://space-kitty.com/papers/arxiv:2610.36965)**. Ludwig Schmid, Jurek Eisinger, Daniel Schoenberger et al. · 2026 (arXiv:2610.36965). Source: - **[Quantum Evolution Kernel for Node-Attributed Graphs](https://space-kitty.com/papers/arxiv:2610.36984)**. Manuel Padovani, Alessandra Di Pierro, Claudia Daffara · 2026 (arXiv:2610.36984). Source: - **[Optimal quantum discrimination at Liouvillian exceptional points](https://space-kitty.com/papers/arxiv:2610.37660)**. Aritra Ghosh, M. Bhattacharya · 2026 (arXiv:2610.37660). Source: - **[Neutrinos as Quantum Information Carriers? A Gap Analysis Against the DiVincenzo Criteria](https://space-kitty.com/papers/arxiv:2610.34666)**. Ramanuj Awasthi · 2026 (arXiv:2610.34666). Source: - **[Bargmann-invariant witness of the graviton commutator](https://space-kitty.com/papers/arxiv:2610.35253)**. Hiroki Matsui · 2026 (arXiv:2610.35253). Source: - **[Spectral fingerprint recognition of mobile signals via Rydberg atomic sensors](https://space-kitty.com/papers/arxiv:2610.35301)**. Yi-Ming Yin, Ming-Yao Cui, Ling-Yu Du et al. · 2026 (arXiv:2610.35301). Source: - **[Rydberg atomic field-enhanced feed beyond electrically small antennas](https://space-kitty.com/papers/arxiv:2610.35315)**. Jia-Dou Nan, Qian-Qian Zhang, Hao-Yu Fan et al. · 2026 (arXiv:2610.35315). Source: - **[Analog Quantum Experiments Meet Automatic Differentiation - from Programs to Atoms](https://space-kitty.com/papers/arxiv:2610.36167)**. Yue Shi, Pengyu Liu, Yuxiang Peng · 2026 (arXiv:2610.36167). 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