Ultrasensitive magnetic field detection using a single artificial atom

被引：65

作者：

Bal, M. ^{[1
,2
]}

Deng, C. ^{[1
,2
]}

Orgiazzi, J. -L. ^{[2
,3
]}

Ong, F. R. ^{[1
,2
]}

Lupascu, A. ^{[1
,2
]}

机构：

[1] Univ Waterloo, Dept Phys & Astron, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada

[2] Univ Waterloo, Waterloo Inst Nanotechnol, Waterloo, ON N2L 3G1, Canada

[3] Univ Waterloo, Dept Elect & Comp Engn, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada

来源：

NATURE COMMUNICATIONS | 2012年 / 3卷

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

CIRCUIT QUANTUM ELECTRODYNAMICS; FLUX QUBIT; DC-SQUID; NOISE; MAGNETOMETRY; DIAMOND; AMPLIFICATION; SPIN;

D O I：

10.1038/ncomms2332

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Efficient detection of magnetic fields is central to many areas of research and technology. High-sensitivity detectors are commonly built using direct-current superconducting quantum interference devices or atomic systems. Here we use a single artificial atom to implement an ultrasensitive magnetometer with micron range size. The artificial atom, a superconducting two-level system, is operated similarly to atom and diamond nitrogen-vacancy centre-based magnetometers. The high sensitivity results from quantum coherence combined with strong coupling to magnetic field. We obtain a sensitivity of 3.3 pT Hz(-1/2) for a frequency of 10 MHz. We discuss feasible improvements to increase sensitivity by one order of magnitude. The intrinsic sensitivity of this detector at frequencies in the 100 kHz-10MHz range compares favourably with direct-current superconducting quantum interference devices and atomic magnetometers of equivalent spatial resolution. This result illustrates the potential of artificial quantum systems for sensitive detection and related applications.

引用

页数：8

共 41 条

[11]

Clarke J., 2004, SQUID HDB, V1

[12] Superconducting quantum bits [J].

Clarke, John ;

Wilhelm, Frank K. .

NATURE, 2008, 453 (7198) :1031-1042

[13] Ultrahigh sensitivity magnetic field and magnetization measurements with an atomic magnetometer [J].

Dang, H. B. ;

Maloof, A. C. ;

Romalis, M. V. .

APPLIED PHYSICS LETTERS, 2010, 97 (15)

[14] QUANTUM NOISE IN SQUIDS [J].

DANILOV, VV ;

LIKHAREV, KK ;

ZORIN, AB .

IEEE TRANSACTIONS ON MAGNETICS, 1983, 19 (03) :572-575

[15] Single-Spin Magnetometry with Multipulse Sensing Sequences [J].

de lange, G. ;

Riste, D. ;

Dobrovitski, V. V. ;

Hanson, R. .

PHYSICAL REVIEW LETTERS, 2011, 106 (08)

[16] Scanning magnetic field microscope with a diamond single-spin sensor [J].

Degen, C. L. .

APPLIED PHYSICS LETTERS, 2008, 92 (24)

[17] Cavity Optomechanical Magnetometer [J].

Forstner, S. ;

Prams, S. ;

Knittel, J. ;

van Ooijen, E. D. ;

Swaim, J. D. ;

Harris, G. I. ;

Szorkovszky, A. ;

Bowen, W. P. ;

Rubinsztein-Dunlop, H. .

PHYSICAL REVIEW LETTERS, 2012, 108 (12)

[18] RICE REPRESENTATION FOR CYCLOSTATIONARY PROCESSES [J].

GARDNER, WA .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1987, 35 (01) :74-78

[19] Cyclostationarity: Half a century of research [J].

Gardner, WA ;

Napolitano, A ;

Paura, L .

SIGNAL PROCESSING, 2006, 86 (04) :639-697

[20] Flux qubit as a sensor of magnetic flux [J].

Il'ichev, E. ;

Greenberg, Ya. S. .

EPL, 2007, 77 (05)

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