Spurious Harmonic Response of Multipulse Quantum Sensing Sequences

被引：75
作者：
Loretz, M. [1 ]
Boss, J. M. [1 ]
Rosskopf, T. [1 ]
Mamin, H. J. [2 ]
Rugar, D. [2 ]
Degen, C. L. [1 ]
机构：
[1] ETH, Dept Phys, CH-8093 Zurich, Switzerland
[2] Almaden Res Ctr, IBM Res Div, San Jose, CA 95120 USA
来源：
PHYSICAL REVIEW X | 2015年 / 5卷 / 02期
基金：
瑞士国家科学基金会;
关键词：
NUCLEAR-MAGNETIC-RESONANCE; NITROGEN-VACANCY SPIN; SPECTROSCOPY; DIAMOND; QUBIT; SENSOR;
D O I：
10.1103/PhysRevX.5.021009
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Multipulse sequences based on Carr-Purcell decoupling are frequently used for narrow-band signal detection in single-spin magnetometry. We have analyzed the behavior of multipulse sensing sequences under real-world conditions, including finite pulse durations and the presence of detunings. We find that these nonidealities introduce harmonics to the filter function, allowing additional frequencies to pass the filter. In particular, we find that the XY family of sequences can generate signals at the 2f(ac), 4f(ac), and 8f(ac) harmonics and their odd subharmonics, where f(ac) is the ac signal frequency. Consideration of the harmonic response is especially important for diamond-based nuclear-spin sensing where the nuclear magnetic resonance frequency is used to identify the nuclear-spin species, as it leads to ambiguities when several isotopes are present.
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页数：7
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