Two spatially separate neutral atoms can be deterministically entangled in their real-space positions at ~100-micron separation via state-dependent Rydberg blockade and photon recoil.
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High-fidelity entangling gates and nonlocal circuits with neutral atoms
15 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
Creation and manipulation of entanglement with low error is essential in quantum information systems. In practice, two-qubit entangling gates constitute a dominant error source, limiting circuit depths and performance in fault-tolerant architectures. Using a neutral-atom quantum processor, we realize entangling CZ gates with a high Rabi frequency smooth-amplitude pulse, employing state-selective readout and qubit reuse for fast calibration, and achieve state-of-the-art fidelities of 99.854(4)% which improve to 99.941(3)% upon loss postselection, with stable performance for 10 hours. We then use these low-error gates in quantum circuits with coherent atom rearrangement. We first benchmark performance by creating and disentangling cluster states, and subsequently implement scrambling circuits featuring longer-range connectivity to study non-locally entangled states generated through chaotic dynamics. These results pave the way towards deep-circuit, efficient fault-tolerant quantum computation.
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2026 15roles
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Rydberg atom simulators can be reconfigured to realize antiperiodic boundary conditions and fermionic Kibble-Zurek ramps for probing emergent fermions.
Low-rank Hessian optimization enables rapid closed-loop calibration of optimal-control gates, demonstrated on an amplitude-robust CZ gate on 171Yb qubits reaching 0.99902(7) fidelity after postselection.
Neutral atom platform achieves repeated toric code syndrome extraction with qubit reloading, preserving logical information over 90 cycles and showing distance-dependent logical error suppression.
A single metasurface creates a tweezer array that traps 11,000 atoms, reported as the first platform to reach the 10,000-qubit resource scale.
A new definition of quantum computer energy efficiency is introduced and applied to five major qubit platforms, yielding concrete consumption estimates for current systems and a benchmarking framework for future architectures.
A calibration workflow using ELEA and CAFE circuits achieves CZ gate fidelity above 99.9% on an 84-qubit superconducting processor with 0.007% coherent error and median 99.25% across 72 gates.
A symmetry-co-designed high-rate QEC architecture with parallel STAR injection on bivariate bicycle codes achieves ~5.5x space savings for TFIM and Fermi-Hubbard simulations versus surface-code STAR.
Proposes a measurement-free toric-code memory protocol in three-species globally controlled Rydberg arrays, with 4x4 simulations showing extended logical lifetime below pseudo-threshold p* ≈ 0.034.
An EIT protocol uses hyperfine intermediate states to achieve adiabatic CNOT gates with fidelity above 0.9991 in 0.39 μs for Cs atoms, extending to multiple states and Rydberg platforms.
Proposes dual ³P₀/³P₂ metastable encoding in ¹⁷¹Yb atoms to separate storage and fast-operation qubits with coherent shelving for single-species fault-tolerant neutral-atom quantum computing.
A modular atomic processor with 500,000 qubits factors 2048-bit RSA numbers in roughly the same time as a single large module when inter-module Bell-pair communication runs at 10^5 per second.
Biased-noise ancillas (phase flips only) in bicycle bivariate and cyclic hypergraph product QLDPC codes increase effective fault distance, reduce short loops, and improve logical error rate by nearly 10x at 2e-3 circuit noise when bit flips are 50x rarer.
Logical quantum kernels outperform physical ones when solving differential equations on a neutral-atom processor, with gains traced to noise error detection in the logical encoding.
Builds and releases a verified pipeline for symmetry-respecting excited states of H2O/STO-3G on quantum computers, showing qEOM reaches sub-milli-Hartree accuracy with 3e9 shots after grouping.
citing papers explorer
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Macroscopic position-position entanglement by photon recoil in Rydberg atoms
Two spatially separate neutral atoms can be deterministically entangled in their real-space positions at ~100-micron separation via state-dependent Rydberg blockade and photon recoil.
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Unleashing Emergent Fermions with Rydberg Atom Simulators
Rydberg atom simulators can be reconfigured to realize antiperiodic boundary conditions and fermionic Kibble-Zurek ramps for probing emergent fermions.
-
High-fidelity neutral atom gates leveraging low-rank Hessian optimization
Low-rank Hessian optimization enables rapid closed-loop calibration of optimal-control gates, demonstrated on an amplitude-robust CZ gate on 171Yb qubits reaching 0.99902(7) fidelity after postselection.
-
Quantum error correction with the toric code
Neutral atom platform achieves repeated toric code syndrome extraction with qubit reloading, preserving logical information over 90 cycles and showing distance-dependent logical error suppression.
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Trapping 11,000 Atoms in a Tweezer Array Generated by a Single Metasurface
A single metasurface creates a tweezer array that traps 11,000 atoms, reported as the first platform to reach the 10,000-qubit resource scale.
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Energy efficiency of quantum computers
A new definition of quantum computer energy efficiency is introduced and applied to five major qubit platforms, yielding concrete consumption estimates for current systems and a benchmarking framework for future architectures.
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High-Precision Calibration Workflow Achieves Above $99.9\%$ CZ Gate Fidelity on a Scalable Superconducting Processor
A calibration workflow using ELEA and CAFE circuits achieves CZ gate fidelity above 99.9% on an 84-qubit superconducting processor with 0.007% coherent error and median 99.25% across 72 gates.
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Fast and Parallel High-Rate STAR Architecture for Megaquop Quantum Simulation
A symmetry-co-designed high-rate QEC architecture with parallel STAR injection on bivariate bicycle codes achieves ~5.5x space savings for TFIM and Fermi-Hubbard simulations versus surface-code STAR.
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Measurement-Free Toric-Code Memory in Array Globally Controlled Rydberg Array
Proposes a measurement-free toric-code memory protocol in three-species globally controlled Rydberg arrays, with 4x4 simulations showing extended logical lifetime below pseudo-threshold p* ≈ 0.034.
-
Fast Adiabatic Quantum Gates via Hyperfine Intermediate States
An EIT protocol uses hyperfine intermediate states to achieve adiabatic CNOT gates with fidelity above 0.9991 in 0.39 μs for Cs atoms, extending to multiple states and Rydberg platforms.
-
A Dual Metastable-State Encoding Architecture for Quantum Processing with $^{171}\mathrm{Yb}$ Atom Arrays
Proposes dual ³P₀/³P₂ metastable encoding in ¹⁷¹Yb atoms to separate storage and fast-operation qubits with coherent shelving for single-species fault-tolerant neutral-atom quantum computing.
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Factoring $2048$ bit RSA integers with a half-million-qubit modular atomic processor
A modular atomic processor with 500,000 qubits factors 2048-bit RSA numbers in roughly the same time as a single large module when inter-module Bell-pair communication runs at 10^5 per second.
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Untangling QLDPC Codes with Biased Noise Ancilla
Biased-noise ancillas (phase flips only) in bicycle bivariate and cyclic hypergraph product QLDPC codes increase effective fault distance, reduce short loops, and improve logical error rate by nearly 10x at 2e-3 circuit noise when bit flips are 50x rarer.
-
Benchmarking a machine-learning differential equations solver on a neutral-atom logical processor
Logical quantum kernels outperform physical ones when solving differential equations on a neutral-atom processor, with gains traced to noise error detection in the logical encoding.
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A Reproducible Pipeline for Symmetry-Respecting Excited States on Near-Term Quantum Computers: The H2O/STO-3G Case
Builds and releases a verified pipeline for symmetry-respecting excited states of H2O/STO-3G on quantum computers, showing qEOM reaches sub-milli-Hartree accuracy with 3e9 shots after grouping.