Single shot charge detection using a radio-frequency quantum point contact

被引：68

作者：

Cassidy, M. C. ^{[1
]}

Dzurak, A. S.

Clark, R. G.

Petersson, K. D.

Farrer, I.

Ritchie, D. A.

Smith, C. G.

机构：

[1] Univ New S Wales, Sch Elect Engn, Ctr Quantum Comp Technol, Sydney, NSW 2052, Australia

[2] Univ New S Wales, Sch Phys, Ctr Quantum Comp Technol, Sydney, NSW 2052, Australia

[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 22期

基金：

英国工程与自然科学研究理事会; 澳大利亚研究理事会;

关键词：

D O I：

10.1063/1.2809370

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on charge sensing measurements of a GaAs semiconductor quantum dot device using a radio frequency quantum point contact (rf-QPC). The rf-QPC is fully characterized at 4 K and millikelvin temperatures and found to have a bandwidth exceeding 20 MHz. For single shot charge sensing, we achieve a charge sensitivity of similar to 2x10(-4) e/root Hz referred to the neighboring dot's charge. The rf-QPC compares favorably with rf single electron transistor electrometers and promises to be an extremely useful tool for characterizing and measuring semiconductor quantum systems on fast time scales. (C) 2007 American Institute of Physics.

引用

页数：3

共 16 条

[1] Radio-frequency single-electron transistor: Toward the shot-noise limit [J].

Aassime, A ;

Gunnarsson, D ;

Bladh, K ;

Delsing, P ;

Schoelkopf, R .

APPLIED PHYSICS LETTERS, 2001, 79 (24) :4031-4033

[2] Development and operation of the twin radio frequency single electron transistor for cross-correlated charge detection [J].

Buehler, TM ;

Reilly, DJ ;

Starrett, RP ;

Court, NA ;

Hamilton, AR ;

Dzurak, AS ;

Clark, RG .

JOURNAL OF APPLIED PHYSICS, 2004, 96 (08) :4508-4513

[3] Single-shot readout with the radio-frequency single-electron transistor in the presence of charge noise [J].

Buehler, TM ;

Reilly, DJ ;

Starrett, RP ;

Greentree, AD ;

Hamilton, AR ;

Dzurak, AS ;

Clark, RG .

APPLIED PHYSICS LETTERS, 2005, 86 (14) :1-3

[4]

Elzerman JM, 2004, NATURE, V430, P431, DOI 10.1039/nature02693

[5] MEASUREMENTS OF COULOMB BLOCKADE WITH A NONINVASIVE VOLTAGE PROBE [J].

FIELD, M ;

SMITH, CG ;

PEPPER, M ;

RITCHIE, DA ;

FROST, JEF ;

JONES, GAC ;

HASKO, DG .

PHYSICAL REVIEW LETTERS, 1993, 70 (09) :1311-1314

[6]

GRABERT H, 1992, SINGLE CHARGE TUNNEL, V294, P321

[7] Counting statistics of single electron transport in a quantum dot [J].

Gustavsson, S ;

Leturcq, R ;

Simovic, B ;

Schleser, R ;

Ihn, T ;

Studerus, P ;

Ensslin, K ;

Driscoll, DC ;

Gossard, AC .

PHYSICAL REVIEW LETTERS, 2006, 96 (07)

[8] Experimental test of the quantum shot noise reduction theory [J].

Kumar, A ;

Saminadayar, L ;

Glattli, DC ;

Jin, Y ;

Etienne, B .

PHYSICAL REVIEW LETTERS, 1996, 76 (15) :2778-2781

[9] Real-time detection of electron tunnelling in a quantum dot [J].

Lu, W ;

Ji, ZQ ;

Pfeiffer, L ;

West, KW ;

Rimberg, AJ .

NATURE, 2003, 423 (6938) :422-425

[10] Experimental signature of phonon-mediated spin relaxation in a two-electron quantum dot [J].

Meunier, T. ;

Vink, I. T. ;

van Beveren, L. H. Willems ;

Tielrooij, K-J. ;

Hanson, R. ;

Koppens, F. H. L. ;

Tranitz, H. P. ;

Wegscheider, W. ;

Kouwenhoven, L. P. ;

Vandersypen, L. M. K. .

PHYSICAL REVIEW LETTERS, 2007, 98 (12)

← 1 2 →