title: Fluorescence thermometry enhanced by the quantum coherence of single spins in diamond.
abstract: We demonstrate fluorescence thermometry techniques with sensitivities approaching 10 mK · Hz(-1/2) based on the spin-dependent photoluminescence of nitrogen vacancy (NV) centers in diamond. These techniques use dynamical decoupling protocols to convert thermally induced shifts in the NV center's spin resonance frequencies into large changes in its fluorescence. By mitigating interactions with nearby nuclear spins and facilitating selective thermal measurements, these protocols enhance the spin coherence times accessible for thermometry by 45-fold, corresponding to a 7-fold improvement in the NV center's temperature sensitivity. Moreover, we demonstrate these techniques can be applied over a broad temperature range and in both finite and near-zero magnetic field environments. This versatility suggests that the quantum coherence of single spins could be practically leveraged for sensitive thermometry in a wide variety of biological and microscale systems.
authors: Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106, USA.
authors: David M
authors: DM
authors: Toyli
authors: Charles F
authors: CF
authors: de las Casas
authors: David J
authors: DJ
authors: Christle
authors: Viatcheslav V
authors: VV
authors: Dobrovitski
authors: David D
authors: DD
authors: Awschalom
keywords: electron spin resonance; quantum control; spintronics
references: Science. 2013 Feb 1;339(6119):557-60
references: 23372008
references: ACS Nano. 2011 Jun 28;5(6):5067-71
references: 21574616
references: Nanoscale. 2012 Aug 7;4(15):4301-26
references: 22751683
references: Nat Nanotechnol. 2013 Mar;8(3):175-9
references: 23396312
references: Phys Rev Lett. 2013 Mar 29;110(13):130802
references: 23581305
references: Proc Natl Acad Sci U S A. 2012 Aug 21;109(34):13493-7
references: 22869706
references: Nat Nanotechnol. 2011 May 08;6(6):358-63
references: 21552253
references: Nanoscale. 2012 Aug 21;4(16):4799-829
references: 22763389
references: Phys Rev Lett. 2012 May 11;108(19):197601
references: 23003089
references: Nano Lett. 2012 Apr 11;12(4):2107-11
references: 22394124
references: Phys Rev Lett. 2004 Sep 24;93(13):130501
references: 15524692
references: Science. 2013 Feb 1;339(6119):561-3
references: 23372009
references: Nat Commun. 2012 Feb 28;3:705
references: 22426226
references: J Am Chem Soc. 2009 Mar 4;131(8):2766-7
references: 19199610
references: Phys Rev Lett. 2012 May 18;108(20):200402
references: 23003128
references: Phys Rev Lett. 2010 Feb 19;104(7):070801
references: 20366868
references: Nat Nanotechnol. 2012 Apr 15;7(5):320-4
references: 22504708
references: Phys Rev Lett. 2010 Nov 12;105(20):200402
references: 21231211
references: Science. 2006 Oct 13;314(5797):281-5
references: 16973839
references: Science. 2010 Oct 1;330(6000):60-3
references: 20829452
references: ACS Nano. 2010 Jun 22;4(6):3254-8
references: 20441184
references: Nat Nanotechnol. 2010 Mar;5(3):195-9
references: 20154687
references: Nat Mater. 2009 May;8(5):383-7
references: 19349970