ArticleScience advances2020
Bias-preserving gates with stabilized cat qubits.
Article in Science advances, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- An entangling gate for dual-rail erasure qubits.Nature · 2026Article
- Quantum benchmarking of high-fidelity noise-biased operations on a detuned Kerr-cat qubit.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Quantum-enhanced multiparameter sensing in a single mode.Science advances · 2025Article
- Entangling Schrödinger's cat states by bridging discrete- and continuous-variable encoding.Nature communications · 2025Article
- Article
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- Observation and manipulation of quantum interference in a superconducting Kerr parametric oscillator.Nature communications · 2024Article
- High-fidelity parametric beamsplitting with a parity-protected converter.Nature communications · 2023Article
- Measurement-based preparation of stable coherent states of a Kerr parametric oscillator.Scientific reports · 2023Article
- Erasure conversion for fault-tolerant quantum computing in alkaline earth Rydberg atom arrays.Nature communications · 2022Article
- Dissipative Phase Transition in Systems with Two-Photon Drive and Nonlinear Dissipation near the Critical Point.Nanomaterials (Basel, Switzerland) · 2022Article
- Unconditional Fock state generation using arbitrarily weak photonic nonlinearities.Science advances · 2021Article
- Controls of a superconducting quantum parametron under a strong pump field.Scientific reports · 2021Article
- The XZZX surface code.Nature communications · 2021Article
- Stabilization and operation of a Kerr-cat qubit.Nature · 2020Article
Corrections and comments
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Authors and funding
12 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The code capacity threshold for error correction using biased-noise qubits is known to be higher than with qubits without such structured noise. However, realistic circuit-level noise severely restricts these improvements. This is because gate operations, such as a controlled-NOT (CX) gate, which do not commute with the dominant error, unbias the noise channel. Here, we overcome the challenge of implementing a bias-preserving CX gate using biased-noise stabilized cat qubits in driven nonlinear oscillators. This continuous-variable gate relies on nontrivial phase space topology of the cat states. Furthermore, by following a scheme for concatenated error correction, we show that the availability of bias-preserving CX gates with moderately sized cats improves a rigorous lower bound on the fault-tolerant threshold by a factor of two and decreases the overhead in logical Clifford operations by a factor of five. Our results open a path toward high-threshold, low-overhead, fault-tolerant codes tailored to biased-noise cat qubits.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.