Optimal quantum control of a spin qubit in diamond for biosensing

被引：0

作者：

Hernandez-Gomez, Santiago ^{[1
]}

Balducci, Federico ^{[2
]}

Cappellaro, Paola ^{[3
,4
]}

Scardicchio, Antonello ^{[5
]}

Fabbri, Nicole ^{[6
]}

机构：

[1] Univ Firenze, LENS European Lab Nonlinear Spect, Dipartimento Fis & Astron, Sesto Fiorentino, Italy

[2] Ist Nazl Fis Nucl, SISSA Int Sch Adv Studies, Trieste, Italy

[3] MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[4] MIT, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[5] Ist Nazl Fis Nucl, Abdus Salam Int Ctr Theoret Phys, Trieste, Italy

[6] CNR INO, Ist Nazl Ottica, LENS European Lab Nonlinear Spect, Sesto Fiorentino, Italy

来源：

PROCEEDINGS OF 2022 IEEE INTERNATIONAL WORKSHOP ON METROLOGY FOR INDUSTRY 4.0 & IOT (IEEE METROIND4.0&IOT) | 2022年

关键词：

quantum sensing; magnetometry; nano-MRI; quantum control; optimization problems; SINGLE; CENTERS; FIELD;

D O I：

10.1109/MetroInd4.0IoT54413.2022.9831543

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

The nitrogen-vacancy (NV) center in diamond is a quantum defect in diamond with unique properties for use in high-sensitive, high-resolution quantum sensors of magnetic fields. One of the most interesting and challenging application of NV quantum sensors is nanoscale magnetic resonance imaging (nano-MRI), which would enable to address single biomolecules. To this goal, improving the sensitivity of the NV sensor is a crucial task. Here, we present a quantum optimal control method that optimizes the sensitivity of NV sensor to specific weak magnetic signals with biologically-relevant, complex spectrum. The method, based on the mapping of the sensing problem on a problem of energy optimization of an Ising chain, allows us to improve sensitivity by three orders of magnitude compared to standard control sequences.

引用

页码：115 / 120

页数：6

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