Bulk and surface loss in superconducting transmon qubits

被引：65

作者：

Dial, Oliver ^{[1
]}

McClure, Douglas T. ^{[1
]}

Poletto, Stefano ^{[1
,2
,3
]}

Keefe, G. A. ^{[1
]}

Rothwell, Mary Beth ^{[1
]}

Gambetta, Jay M. ^{[1
]}

Abraham, David W. ^{[1
]}

Chow, Jerry M. ^{[1
]}

Steffen, Matthias ^{[1
]}

机构：

[1] IBM TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA

[2] Delft Univ Technol, QuTech Res Ctr, POB 5046, NL-2600 GA Delft, Netherlands

[3] Delft Univ Technol, Kavli Inst Nanosci, POB 5046, NL-2600 GA Delft, Netherlands

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2016年 / 29卷 / 04期

关键词：

transmon; sapphire; loss tangent; surface loss;

D O I：

10.1088/0953-2048/29/4/044001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Decoherence of superconducting transmon qubits is purported to be consistent with surface loss from two-level systems on the substrate surface. Here, we present a study of surface loss in transmon devices, explicitly designed to have varying sensitivities to different surface loss contributors. Our experiments also encompass two particular different sapphire substrates, which reveal the onset of a yet unknown additional loss mechanism outside of surface loss for one of the substrates. Tests across different wafers and devices demonstrate substantial variation, and we emphasize the importance of testing large numbers of devices for disentangling different sources of decoherence.

引用

页数：4

共 19 条

[11] Charge-insensitive qubit design derived from the Cooper pair box [J].

Koch, Jens ;

Yu, Terri M. ;

Gambetta, Jay ;

Houck, A. A. ;

Schuster, D. I. ;

Majer, J. ;

Blais, Alexandre ;

Devoret, M. H. ;

Girvin, S. M. ;

Schoelkopf, R. J. .

PHYSICAL REVIEW A, 2007, 76 (04)

[12] Interacting two-level defects as sources of fluctuating high-frequency noise in superconducting circuits [J].

Mueller, Clemens ;

Lisenfeld, Juergen ;

Shnirman, Alexander ;

Poletto, Stefano .

PHYSICAL REVIEW B, 2015, 92 (03)

[13] Observation of High Coherence in Josephson Junction Qubits Measured in a Three-Dimensional Circuit QED Architecture [J].

Paik, Hanhee ;

Schuster, D. I. ;

Bishop, Lev S. ;

Kirchmair, G. ;

Catelani, G. ;

Sears, A. P. ;

Johnson, B. R. ;

Reagor, M. J. ;

Frunzio, L. ;

Glazman, L. I. ;

Girvin, S. M. ;

Devoret, M. H. ;

Schoelkopf, R. J. .

PHYSICAL REVIEW LETTERS, 2011, 107 (24)

[14] Characterization and reduction of microfabrication-induced decoherence in superconducting quantum circuits [J].

Quintana, C. M. ;

Megrant, A. ;

Chen, Z. ;

Dunsworth, A. ;

Chiaro, B. ;

Barends, R. ;

Campbell, B. ;

Chen, Yu ;

Hoi, I. -C. ;

Jeffrey, E. ;

Kelly, J. ;

Mutus, J. Y. ;

O'Malley, P. J. J. ;

Neill, C. ;

Roushan, P. ;

Sank, D. ;

Vainsencher, A. ;

Wenner, J. ;

White, T. C. ;

Cleland, A. N. ;

Martinis, John M. .

APPLIED PHYSICS LETTERS, 2014, 105 (06)

[15] Superconducting qubit in a waveguide cavity with a coherence time approaching 0.1 ms [J].

Rigetti, Chad ;

Gambetta, Jay M. ;

Poletto, Stefano ;

Plourde, B. L. T. ;

Chow, Jerry M. ;

Corcoles, A. D. ;

Smolin, John A. ;

Merkel, Seth T. ;

Rozen, J. R. ;

Keefe, George A. ;

Rothwell, Mary B. ;

Ketchen, Mark B. ;

Steffen, M. .

PHYSICAL REVIEW B, 2012, 86 (10)

[16] Detecting bit-flip errors in a logical qubit using stabilizer measurements [J].

Riste, D. ;

Poletto, S. ;

Huang, M. -Z. ;

Bruno, A. ;

Vesterinen, V. ;

Saira, O. -P. ;

DiCarlo, L. .

NATURE COMMUNICATIONS, 2015, 6

[17] Surface participation and dielectric loss in superconducting qubits [J].

Wang, C. ;

Axline, C. ;

Gao, Y. Y. ;

Brecht, T. ;

Chu, Y. ;

Frunzio, L. ;

Devoret, M. H. ;

Schoelkopf, R. J. .

APPLIED PHYSICS LETTERS, 2015, 107 (16)

[18] Improving the coherence time of superconducting coplanar resonators [J].

Wang, H. ;

Hofheinz, M. ;

Wenner, J. ;

Ansmann, M. ;

Bialczak, R. C. ;

Lenander, M. ;

Lucero, Erik ;

Neeley, M. ;

O'Connell, A. D. ;

Sank, D. ;

Weides, M. ;

Cleland, A. N. ;

Martinis, John M. .

APPLIED PHYSICS LETTERS, 2009, 95 (23)

[19] Wirebond crosstalk and cavity modes in large chip mounts for superconducting qubits [J].

Wenner, J. ;

Neeley, M. ;

Bialczak, Radoslaw C. ;

Lenander, M. ;

Lucero, Erik ;

O'Connell, A. D. ;

Sank, D. ;

Wang, H. ;

Weides, M. ;

Cleland, A. N. ;

Martinis, John M. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2011, 24 (06)

← 1 2 →