☆ 4.6 Article

Post-fabrication frequency trimming of coplanar-waveguide resonators in circuit QED quantum processors

APPLIED PHYSICS LETTERS (2023)

相关参考文献

注意：仅列出部分参考文献，下载原文获取全部文献信息。

Article Physics, Multidisciplinary

Logical-qubit operations in an error-detecting surface code

J. F. Marques et al.

Summary: Future fault-tolerant quantum computers will store and process quantum data in logical qubits. A suite of logical operations has been realized on a distance-2 surface code qubit built from seven physical qubits. Fault-tolerant variants show higher performance in various operations, marking a milestone in quantum error correction with higher-distance codes.

NATURE PHYSICS (2022)

添加到收藏夹

Article Multidisciplinary Sciences

Realizing repeated quantum error correction in a distance-three surface code

Sebastian Krinner et al.

Summary: This study demonstrates quantum error correction using the surface code and implements protection of logical qubits using 17 physical qubits in a superconducting circuit. By repeatedly executing error-correction cycles, measuring and decoding error syndromes, and applying post-processing corrections, repeated, fast, and high-performance quantum error correction is achieved.

NATURE (2022)

添加到收藏夹

Article Physics, Multidisciplinary

Calibrated Decoders for Experimental Quantum Error Correction

Edward H. Chen et al.

Summary: Arbitrarily long quantum computations require quantum memories that can be repeatedly measured without being corrupted. In this study, the researchers were able to preserve the state of a quantum memory by using flagged error events. Fast, midcircuit measurements and resets of the physical qubits were used to extract all error events. A perfect matching decoder was introduced for comparison with other error decoders, and it was calibrated using measurements containing up to size-four correlated events. The researchers observed logical errors per round that surpass the physical measurement error, demonstrating the potential for repeated logical measurements.

PHYSICAL REVIEW LETTERS (2022)

添加到收藏夹

Article Multidisciplinary Sciences

High-performance superconducting quantum processors via laser annealing of transmon qubits

Eric J. Zhang et al.

Summary: Scaling the number of qubits while maintaining high-fidelity quantum gates is a challenge in quantum computing. Laser annealing is used to selectively tune the frequency of transmon qubits in fixed-frequency architectures. Statistical analysis shows high precision and no measurable impact on qubit coherence. The tuned processor exhibits good gate error statistics, indicating potential for high-yield scaling beyond 1000 qubits.

SCIENCE ADVANCES (2022)

添加到收藏夹

Article Physics, Applied

Effects of laser-annealing on fixed-frequency superconducting qubits

Hyunseong Kim et al.

Summary: As superconducting quantum processors become more complex, it is necessary to develop techniques to overcome frequency crowding constraints. Laser-annealing, a recently developed method, offers an effective post-fabrication approach to adjust the frequency of superconducting qubits. This study presents an automated laser-annealing apparatus based on conventional microscopy components and demonstrates the preservation of highly coherent transmons. The researchers also investigate the change in defect features, particularly two-level system defects, after laser-annealing using noise spectroscopy.

APPLIED PHYSICS LETTERS (2022)

添加到收藏夹

Article Quantum Science & Technology

Laser-annealing Josephson junctions for yielding scaled-up superconducting quantum processors

Jared B. Hertzberg et al.

Summary: This article presents a solution to the problem of frequency crowding in fixed-frequency qubit architectures, which can greatly improve the precision of setting qubit frequencies through systematic adjustments. Using statistical modeling, the probability of avoiding frequency collisions was calculated, highlighting the importance of post-fabrication tuning in finding workable lattices in quantum systems.

NPJ QUANTUM INFORMATION (2021)

添加到收藏夹

Article Physics, Applied

Benchmarking Coherent Errors in Controlled-Phase Gates due to Spectator Qubits

S. Krinner et al.

PHYSICAL REVIEW APPLIED (2020)

添加到收藏夹

Article Optics

Effective Hamiltonian models of the cross-resonance gate

Easwar Magesan et al.

PHYSICAL REVIEW A (2020)

添加到收藏夹

Review Physics, Applied

A quantum engineer's guide to superconducting qubits

P. Krantz et al.

APPLIED PHYSICS REVIEWS (2019)

添加到收藏夹

Article Optics

Operation and intrinsic error budget of a two-qubit cross-resonance gate

Vinay Tripathi et al.

PHYSICAL REVIEW A (2019)

添加到收藏夹

Article Physics, Applied

Rapid High-fidelity Multiplexed Readout of Superconducting Qubits

Johannes Heinsoo et al.

PHYSICAL REVIEW APPLIED (2018)

添加到收藏夹

Article Engineering, Electrical & Electronic

Superconducting NbTin Thin Films With Highly Uniform Properties Over a empty set 100 mm Wafer

David Johannes Thoen et al.

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY (2017)

添加到收藏夹

Article Physics, Applied

Rapid High-Fidelity Single-Shot Dispersive Readout of Superconducting Qubits

T. Walter et al.

PHYSICAL REVIEW APPLIED (2017)

添加到收藏夹

Article Physics, Applied

Scalable Quantum Circuit and Control for a Superconducting Surface Code

R. Versluis et al.

PHYSICAL REVIEW APPLIED (2017)

添加到收藏夹

Article Physics, Applied

Active Resonator Reset in the Nonlinear Dispersive Regime of Circuit QED

C. C. Bultink et al.

PHYSICAL REVIEW APPLIED (2016)

添加到收藏夹

Article Multidisciplinary Sciences

A near-quantum-limited Josephson traveling-wave parametric amplifier

C. Macklin et al.

SCIENCE (2015)

添加到收藏夹

Article Physics, Applied

Frequency division multiplexing readout and simultaneous manipulation of an array of flux qubits

M. Jerger et al.

APPLIED PHYSICS LETTERS (2012)

添加到收藏夹

Article Physics, Multidisciplinary

Exploring circuit quantum electrodynamics using a widely tunable superconducting resonator

M. Sandberg et al.

PHYSICA SCRIPTA (2009)

添加到收藏夹

Article Physics, Applied

Coplanar waveguide resonators for circuit quantum electrodynamics

M. Goeppl et al.

JOURNAL OF APPLIED PHYSICS (2008)

添加到收藏夹

Article Optics

Quantum trajectory approach to circuit QED: Quantum jumps and the Zeno effect

Jay Gambetta et al.

PHYSICAL REVIEW A (2008)

添加到收藏夹

Article Physics, Multidisciplinary

Controlling the spontaneous emission of a superconducting transmon qubit

A. A. Houck et al.

PHYSICAL REVIEW LETTERS (2008)

添加到收藏夹

Article Optics

Charge-insensitive qubit design derived from the Cooper pair box

Jens Koch et al.

PHYSICAL REVIEW A (2007)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.