Detuning- and Stark-robust Rydberg gates

• URL: http://arxiv.org/abs/2608.27426v1
• Date: Thu, 27 Aug 2026 17:49:51 GMT
• Title: Detuning- and Stark-robust Rydberg gates
• Abstract summary: Rydberg entangling gates driven by a two-photon transition in alkali atoms suffer from an adverse scaling of light-shift-induced errors.<n>We show that in a more general framework, in which both qubit states take part in the gate, full or partial robustness to these errors can be realized.<n>We present two gate constructions, which either cancel the errors outright or convert them into single-qubit errors that can be corrected locally.
• Score: 0.10923877073891443
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Rydberg entangling gates driven by a two-photon transition in alkali atoms suffer from an adverse scaling of light-shift-induced errors. Robustness to such detuning errors is known to be impossible to achieve in the design of conventional Rydberg gate protocols, where only one of the qubit states is coupled to the Rydberg state. Here, we show that in a more general framework, in which both qubit states take part in the gate, full or partial robustness to these errors can be realized. We present two gate constructions, which either cancel the errors outright or convert them into single-qubit errors that can be corrected locally. We map the regimes -- in terms of light-shift strength, intensity inhomogeneity, and Rydberg decay rate -- in which these protocols outperform the widely used time-optimal Rydberg gate, and find that they already include the conditions of state-of-the-art experiments. Finally, we show the existence of a Rydberg `fly-by' entangling gate, an important primitive for an emerging class of neutral-atom quantum computing architectures.

Related papers

• Theory of approximate quantum error correction and the error-set model [53.73800998389749]
  We develop a theory of approximate quantum error correction based on the error-set model.<n>Code correcting a given error set automatically protects against every channel whose Kraus operators lie in their linear span.<n>This linearity gives rise to code distance, the equivalence between erasures and general errors, and a theory ofally good codes.
  arXiv  Detail & Related papers  (2026-07-25T02:15:33Z)
• Fast Native Three-Qubit Gates and Fault-Tolerant Quantum Error Correction with Trapped Rydberg Ions [1.4561065827816844]
  We introduce a native controlled-controlled-Z gate with microwave-dressed Rydberg ions.<n>The resulting gate outperforms standard decompositions into one- and two-qubit gates.<n>We show that quantum error correction can be performed in a fully fault-tolerant manner on a linear Rydberg-ion chain.
  arXiv  Detail & Related papers  (2025-12-18T15:14:37Z)
• Floquet geometric entangling gates in ground-state manifolds of Rydberg atoms [0.49157446832511503]
  We propose new applications of Floquet theory in Rydberg atoms for constructing quantum entangling gates. Error-resilient two-qubit entangling gates can be implemented in the regime of Rydberg blockade.
  arXiv  Detail & Related papers  (2024-05-01T12:15:48Z)
• Quantum Gate Optimization for Rydberg Architectures in the Weak-Coupling Limit [55.05109484230879]
  We demonstrate machine learning assisted design of a two-qubit gate in a Rydberg tweezer system. We generate optimal pulse sequences that implement a CNOT gate with high fidelity. We show that local control of single qubit operations is sufficient for performing quantum computation on a large array of atoms.
  arXiv  Detail & Related papers  (2023-06-14T18:24:51Z)
• Witnessing entanglement in trapped-ion quantum error correction under realistic noise [41.94295877935867]
  Quantum Error Correction (QEC) exploits redundancy by encoding logical information into multiple physical qubits. We present a detailed microscopic error model to estimate the average gate infidelity of two-qubit light-shift gates used in trapped-ion platforms. We then apply this realistic error model to quantify the multipartite entanglement generated by circuits that act as QEC building blocks.
  arXiv  Detail & Related papers  (2022-12-14T20:00:36Z)
• Software mitigation of coherent two-qubit gate errors [55.878249096379804]
  Two-qubit gates are important components of quantum computing. But unwanted interactions between qubits (so-called parasitic gates) can degrade the performance of quantum applications. We present two software methods to mitigate parasitic two-qubit gate errors.
  arXiv  Detail & Related papers  (2021-11-08T17:37:27Z)
• Hardware-Efficient, Fault-Tolerant Quantum Computation with Rydberg Atoms [55.41644538483948]
  We provide the first complete characterization of sources of error in a neutral-atom quantum computer. We develop a novel and distinctly efficient method to address the most important errors associated with the decay of atomic qubits to states outside of the computational subspace. Our protocols can be implemented in the near-term using state-of-the-art neutral atom platforms with qubits encoded in both alkali and alkaline-earth atoms.
  arXiv  Detail & Related papers  (2021-05-27T23:29:53Z)
• Resilient quantum gates on periodically driven Rydberg atoms [10.602950162554212]
  The platform of Rydberg atoms is one of the most promising candidates for achieving quantum computation. We propose a controlled-$Z$ gate on Rydberg atoms where an amplitude-modulated field is employed to induce Rydberg antiblockade. We generalize the gate scheme into multiqubit cases, where resilient multiqubit phase gates can be obtained in one step with an unchanged gate time as the number of qubits increases.
  arXiv  Detail & Related papers  (2021-01-07T02:13:18Z)
• Optimized Geometric Quantum Computation with mesoscopic ensemble of Rydberg Atoms [1.3124513975412255]
  We propose a nonadiabatic non-Abelian geometric quantum operation scheme to realize universal quantum computation with Rydberg atoms. We demonstrate theoretically that both the single qubit and two-qubit quantum gates can achieve high fidelities around or above 99.9% in ideal situations. Our numerical simulations show that the average fidelity could be 99.98% for single ensemble qubit gate and 99.94% for two-qubit gate even when the Rabi frequency of the gate laser acquires 10% fluctuations.
  arXiv  Detail & Related papers  (2020-09-08T13:11:22Z)
• Rydberg Entangling Gates in Silicon [62.997667081978825]
  We propose a new Rydberg entangling gate scheme which we demonstrate theoretically to have an order of magnitude improvement in fidelities and speed over existing protocols. We find that applying this gate to donors in silicon would help overcome the strenuous requirements on atomic precision donor placement and substantial gate tuning. We show that Rydberg gate operation is possible within the lifetime of donor excited states with 99.9% fidelity for the creation of a Bell state in the presence of decoherence.
  arXiv  Detail & Related papers  (2020-08-26T18:00:02Z)
• High-Fidelity Entanglement and Detection of Alkaline-Earth Rydberg Atoms [48.093689931392866]
  Controlled two-qubit entanglement generation has so far been limited to alkali species. We demonstrate a novel approach utilizing the two-valence electron structure of individual alkaline-earth Rydberg atoms. We find fidelities for Rydberg state detection, single-atom Rabi operations, and two-atom entanglement surpassing previously published values.
  arXiv  Detail & Related papers  (2020-01-13T18:42:42Z)
• Robust Mølmer-Sørensen gate for neutral atoms using rapid adiabatic Rydberg dressing [0.0]
  We show that adiabatic rapid passage by Rydberg dressing provides a mechanism for implementing two-qubit entangling gates.<n>We find that the typical error in implementing a two-qubit gate, such as the controlled phase gate, is dominated by errors in the single atom light shift.
  arXiv  Detail & Related papers  (2019-11-11T02:48:18Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.