Weakly Flux-Tunable Superconducting Qubit

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Weakly Flux-Tunable Superconducting Qubit. / Chavez-Garcia, Jose M.; Solgun, Firat; Hertzberg, Jared B.; Jinka, Oblesh; Brink, Markus; Abdo, Baleegh.

In: Physical Review Applied, Vol. 18, No. 3, 034057, 22.09.2022.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Chavez-Garcia, JM, Solgun, F, Hertzberg, JB, Jinka, O, Brink, M & Abdo, B 2022, 'Weakly Flux-Tunable Superconducting Qubit', Physical Review Applied, vol. 18, no. 3, 034057. https://doi.org/10.1103/PhysRevApplied.18.034057

APA

Chavez-Garcia, J. M., Solgun, F., Hertzberg, J. B., Jinka, O., Brink, M., & Abdo, B. (2022). Weakly Flux-Tunable Superconducting Qubit. Physical Review Applied, 18(3), [034057]. https://doi.org/10.1103/PhysRevApplied.18.034057

Vancouver

Chavez-Garcia JM, Solgun F, Hertzberg JB, Jinka O, Brink M, Abdo B. Weakly Flux-Tunable Superconducting Qubit. Physical Review Applied. 2022 Sep 22;18(3). 034057. https://doi.org/10.1103/PhysRevApplied.18.034057

Author

Chavez-Garcia, Jose M. ; Solgun, Firat ; Hertzberg, Jared B. ; Jinka, Oblesh ; Brink, Markus ; Abdo, Baleegh. / Weakly Flux-Tunable Superconducting Qubit. In: Physical Review Applied. 2022 ; Vol. 18, No. 3.

Bibtex

@article{54e8a66460754fb3b7cd809d5c7052a9,
title = "Weakly Flux-Tunable Superconducting Qubit",
abstract = "Flux-tunable qubits are a useful resource for superconducting quantum processors. They can be used to perform CPHASE gates, facilitate fast reset protocols, avoid qubit-frequency collisions in large processors, and enable certain fast readout schemes. However, flux-tunable qubits suffer from a trade-off between their tunability range and sensitivity to flux noise. Optimizing this trade-off is particularly relevant for enabling fast, high-fidelity, all-microwave cross-resonance gates in large, high-coherence processors. This is mainly because cross-resonance gates set stringent conditions on the frequency landscape of neighboring qubits, which are difficult to satisfy with nontunable transmons due to their relatively large fabrication imprecision. To solve this problem, we realize a coherent, flux-tunable, transmonlike qubit, which exhibits a frequency tunability range as small as 43 MHz, and whose frequency, anharmonicity and tunability range are set by a few experimentally achievable design parameters. Such a weakly tunable qubit may be used to avoid frequency collisions in a large lattice while exhibiting minimal susceptibility to flux noise.",
keywords = "QUANTUM, NOISE",
author = "Chavez-Garcia, {Jose M.} and Firat Solgun and Hertzberg, {Jared B.} and Oblesh Jinka and Markus Brink and Baleegh Abdo",
year = "2022",
month = sep,
day = "22",
doi = "10.1103/PhysRevApplied.18.034057",
language = "English",
volume = "18",
journal = "Physical Review Applied",
issn = "2331-7019",
publisher = "American Physical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Weakly Flux-Tunable Superconducting Qubit

AU - Chavez-Garcia, Jose M.

AU - Solgun, Firat

AU - Hertzberg, Jared B.

AU - Jinka, Oblesh

AU - Brink, Markus

AU - Abdo, Baleegh

PY - 2022/9/22

Y1 - 2022/9/22

N2 - Flux-tunable qubits are a useful resource for superconducting quantum processors. They can be used to perform CPHASE gates, facilitate fast reset protocols, avoid qubit-frequency collisions in large processors, and enable certain fast readout schemes. However, flux-tunable qubits suffer from a trade-off between their tunability range and sensitivity to flux noise. Optimizing this trade-off is particularly relevant for enabling fast, high-fidelity, all-microwave cross-resonance gates in large, high-coherence processors. This is mainly because cross-resonance gates set stringent conditions on the frequency landscape of neighboring qubits, which are difficult to satisfy with nontunable transmons due to their relatively large fabrication imprecision. To solve this problem, we realize a coherent, flux-tunable, transmonlike qubit, which exhibits a frequency tunability range as small as 43 MHz, and whose frequency, anharmonicity and tunability range are set by a few experimentally achievable design parameters. Such a weakly tunable qubit may be used to avoid frequency collisions in a large lattice while exhibiting minimal susceptibility to flux noise.

AB - Flux-tunable qubits are a useful resource for superconducting quantum processors. They can be used to perform CPHASE gates, facilitate fast reset protocols, avoid qubit-frequency collisions in large processors, and enable certain fast readout schemes. However, flux-tunable qubits suffer from a trade-off between their tunability range and sensitivity to flux noise. Optimizing this trade-off is particularly relevant for enabling fast, high-fidelity, all-microwave cross-resonance gates in large, high-coherence processors. This is mainly because cross-resonance gates set stringent conditions on the frequency landscape of neighboring qubits, which are difficult to satisfy with nontunable transmons due to their relatively large fabrication imprecision. To solve this problem, we realize a coherent, flux-tunable, transmonlike qubit, which exhibits a frequency tunability range as small as 43 MHz, and whose frequency, anharmonicity and tunability range are set by a few experimentally achievable design parameters. Such a weakly tunable qubit may be used to avoid frequency collisions in a large lattice while exhibiting minimal susceptibility to flux noise.

KW - QUANTUM

KW - NOISE

U2 - 10.1103/PhysRevApplied.18.034057

DO - 10.1103/PhysRevApplied.18.034057

M3 - Journal article

VL - 18

JO - Physical Review Applied

JF - Physical Review Applied

SN - 2331-7019

IS - 3

M1 - 034057

ER -

ID: 322788312