Investigating Surface Loss Effects in Superconducting Transmon Qubits

被引：86

作者：

Gambetta, Jay M. ^{[1
]}

Murray, Conal E. ^{[1
]}

Fung, Y. -K. -K. ^{[1
]}

McClure, Douglas T. ^{[1
]}

Dial, Oliver ^{[1
]}

Shanks, William ^{[1
]}

Sleight, Jeffrey W. ^{[1
]}

Steffen, Matthias ^{[1
]}

机构：

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

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2017年 / 27卷 / 01期

关键词：

Dielectric loss; quantum noise; superconducting qubits;

D O I：

10.1109/TASC.2016.2629670

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Superconducting qubits are sensitive to a variety of loss mechanisms including dielectric loss from interfaces. By changing the physical footprint of the qubit, it is possible to modulate sensitivity to surface loss. Here, we show a systematic study of planar superconducting transmons of differing physical footprints to optimize the qubit design for maximum coherence. We find that qubits with small footprints are limited by surface loss and that qubits with large footprints are limited by other loss mechanisms, which are currently not understood.

引用

页数：5

共 19 条

[1] Coherent Josephson Qubit Suitable for Scalable Quantum Integrated Circuits [J].

Barends, R. ;

Kelly, J. ;

Megrant, A. ;

Sank, D. ;

Jeffrey, E. ;

Chen, Y. ;

Yin, Y. ;

Chiaro, B. ;

Mutus, J. ;

Neill, C. ;

O'Malley, P. ;

Roushan, P. ;

Wenner, J. ;

White, T. C. ;

Cleland, A. N. ;

Martinis, John M. .

PHYSICAL REVIEW LETTERS, 2013, 111 (08)

[2] Minimizing quasiparticle generation from stray infrared light in superconducting quantum circuits [J].

Barends, R. ;

Wenner, J. ;

Lenander, M. ;

Chen, Y. ;

Bialczak, R. C. ;

Kelly, J. ;

Lucero, E. ;

O'Malley, P. ;

Mariantoni, M. ;

Sank, D. ;

Wang, H. ;

White, T. C. ;

Yin, Y. ;

Zhao, J. ;

Cleland, A. N. ;

Martinis, John M. ;

Baselmans, J. J. A. .

APPLIED PHYSICS LETTERS, 2011, 99 (11)

[3] Protecting superconducting qubits from radiation [J].

Corcoles, Antonio D. ;

Chow, Jerry M. ;

Gambetta, Jay M. ;

Rigetti, Chad ;

Rozen, J. R. ;

Keefe, George A. ;

Rothwell, Mary Beth ;

Ketchen, Mark B. ;

Steffen, M. .

APPLIED PHYSICS LETTERS, 2011, 99 (18)

[4] Bulk and surface loss in superconducting transmon qubits [J].

Dial, Oliver ;

McClure, Douglas T. ;

Poletto, Stefano ;

Keefe, G. A. ;

Rothwell, Mary Beth ;

Gambetta, Jay M. ;

Abraham, David W. ;

Chow, Jerry M. ;

Steffen, Matthias .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2016, 29 (04)

[5] OFFSET MASKS FOR LIFT-OFF PHOTOPROCESSING [J].

DOLAN, GJ .

APPLIED PHYSICS LETTERS, 1977, 31 (05) :337-339

[6] Improving the quality factor of microwave compact resonators by optimizing their geometrical parameters [J].

Geerlings, K. ;

Shankar, S. ;

Edwards, E. ;

Frunzio, L. ;

Schoelkopf, R. J. ;

Devoret, M. H. .

APPLIED PHYSICS LETTERS, 2012, 100 (19)

[7] Controlling the spontaneous emission of a superconducting transmon qubit [J].

Houck, A. A. ;

Schreier, J. A. ;

Johnson, B. R. ;

Chow, J. M. ;

Koch, Jens ;

Gambetta, J. M. ;

Schuster, D. I. ;

Frunzio, L. ;

Devoret, M. H. ;

Girvin, S. M. ;

Schoelkopf, R. J. .

PHYSICAL REVIEW LETTERS, 2008, 101 (08)

[8]

Jackson J.D., 1975, CLASSICAL ELECTRODYN, V2nd, P77

[9] THE EVOLUTION OF SILICON-WAFER CLEANING TECHNOLOGY [J].

KERN, W .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1990, 137 (06) :1887-1892

[10] 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)

← 1 2 →