Radiation-suppressed superconducting quantum bit in a planar geometry

被引：29

作者：

Sandberg, Martin ^{[1
]}

Vissers, Michael R. ^{[1
]}

Ohki, Thomas A. ^{[2
]}

Gao, Jiansong ^{[1
]}

Aumentado, Jose ^{[1
]}

Weides, Martin ^{[1
]}

Pappas, David P. ^{[1
]}

机构：

[1] NIST, Boulder, CO 80305 USA

[2] Raytheon BBN Technol, Cambridge, MA 02138 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 07期

关键词：

BELLS-INEQUALITY; VIOLATION; CIRCUITS; QUBITS; STATE;

D O I：

10.1063/1.4792698

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a superconducting transmon qubit circuit design based on large, coplanar capacitor plates and a microstrip resonator. The microstrip geometry, with the ground plane on the back, enhances access to the circuit for state preparation and measurement relative to other designs. The device is fabricated on a silicon substrate using low loss, stoichiometric titanium nitride for the capacitor plates and a single small aluminium/aluminium-oxide/aluminium junction. We observe relaxation and coherence times of 11.7 +/- 0.2 mu s and 9.6 +/- 0.5 mu s, respectively, using spin echo. Calculations show that the close proximity of the superconducting back-plane has the added advantage of suppressing the otherwise high radiation loss of the qubit. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4792698]

引用

页数：4

共 28 条

[1] Violation of Bell's inequality in Josephson phase qubits [J].

Ansmann, Markus ;

Wang, H. ;

Bialczak, Radoslaw C. ;

Hofheinz, Max ;

Lucero, Erik ;

Neeley, M. ;

O'Connell, A. D. ;

Sank, D. ;

Weides, M. ;

Wenner, J. ;

Cleland, A. N. ;

Martinis, John M. .

NATURE, 2009, 461 (7263) :504-506

[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] Cavity quantum electrodynamics for superconducting electrical circuits: An architecture for quantum computation [J].

Blais, A ;

Huang, RS ;

Wallraff, A ;

Girvin, SM ;

Schoelkopf, RJ .

PHYSICAL REVIEW A, 2004, 69 (06) :062320-1

[4] Universal Quantum Gate Set Approaching Fault-Tolerant Thresholds with Superconducting Qubits [J].

Chow, Jerry M. ;

Gambetta, Jay M. ;

Corcoles, A. D. ;

Merkel, Seth T. ;

Smolin, John A. ;

Rigetti, Chad ;

Poletto, S. ;

Keefe, George A. ;

Rothwell, Mary B. ;

Rozen, J. R. ;

Ketchen, Mark B. ;

Steffen, M. .

PHYSICAL REVIEW LETTERS, 2012, 109 (06)

[5] 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)

[6] Demonstration of two-qubit algorithms with a superconducting quantum processor [J].

DiCarlo, L. ;

Chow, J. M. ;

Gambetta, J. M. ;

Bishop, Lev S. ;

Johnson, B. R. ;

Schuster, D. I. ;

Majer, J. ;

Blais, A. ;

Frunzio, L. ;

Girvin, S. M. ;

Schoelkopf, R. J. .

NATURE, 2009, 460 (7252) :240-244

[7] Implementation of a Toffoli gate with superconducting circuits [J].

Fedorov, A. ;

Steffen, L. ;

Baur, M. ;

da Silva, M. P. ;

Wallraff, A. .

NATURE, 2012, 481 (7380) :170-172

[8] Experimental evidence for a surface distribution of two-level systems in superconducting lithographed microwave resonators [J].

Gao, Jiansong ;

Daal, Miguel ;

Vayonakis, Anastasios ;

Kumar, Shwetank ;

Zmuidzinas, Jonas ;

Sadoulet, Bernard ;

Mazin, Benjamin A. ;

Day, Peter K. ;

Leduc, Henry G. .

APPLIED PHYSICS LETTERS, 2008, 92 (15)

[9] 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)

[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 3 →