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Improved quantum sensing with a single solid-state spin via spin-to-charge conversion [article]

Jean-Christophe Jaskula, Brendan J. Shields, Erik Bauch, Mikhail. D. Lukin, Alexei S. Trifonov, Ronald L. Walsworth
2017 arXiv   pre-print
Efficient optical readout of a single, solid-state electronic spin at room temperature is a key challenge for nanoscale quantum sensing.  ...  Here we apply the technique of spin-to-charge conversion to enhance the optical spin-state readout of a single Nitrogen-Vacancy (NV) color center in room temperature diamond, with no degradation in the  ...  Army Research Office under contract/grant number W911NF1510548, the DARPA Quantum Assisted Sensing And Readout (QuASAR) program (contract # HR0011-11-C-0073), the CUA, the Gordon and Betty Moore Foundation  ... 
arXiv:1711.02023v1 fatcat:3nbxdvsnsffdjfouwd5nozoghy

Electron spin contrast of Purcell-enhanced nitrogen-vacancy ensembles in nanodiamonds

S. Bogdanov, M. Y. Shalaginov, A. Akimov, A. S. Lagutchev, P. Kapitanova, J. Liu, D. Woods, M. Ferrera, P. Belov, J. Irudayaraj, A. Boltasseva, V. M. Shalaev
2017 Physical review B  
We introduce a novel method for the optical measurement of the spin contrast in dense nitrogen-vacancy (NV) ensembles.  ...  We show that for improving the spin readout sensitivity in NV ensembles, one should aim at modifying the far field radiation pattern rather than enhancing the emission rate.  ...  The NV exhibits a spin-dependent fluorescence rate, which can be used for optical spin state readout [19] .  ... 
doi:10.1103/physrevb.96.035146 fatcat:yme3s4jjfjehfn7kj4udmdnzmi

Sensitivity optimization for NV-diamond magnetometry

John F. Barry, Jennifer M. Schloss, Erik Bauch, Matthew J. Turner, Connor A. Hart, Linh M. Pham, Ronald L. Walsworth
2020 Reviews of Modern Physics  
These alternative methods, including continuous-wave and pulsed optically detected magnetic resonance, offer reduced sensitivity compared to Ramsey-type sequences (for a fixed number of NVcenters addressed  ...  We analyze methods that allow readout fidelities for single NVcenters and small ensembles in nanodiamonds to approach the spin-projection limit, including spin-to-charge conversion readout (Sec.  ...  Both sources instead suggest that for the mean single NVcenter,  ... 
doi:10.1103/revmodphys.92.015004 fatcat:rdexbzhpdzddvpa2gwaiziakou

Sensitivity Optimization for NV-Diamond Magnetometry [article]

John F. Barry, Jennifer M. Schloss, Erik Bauch, Matthew J. Turner, Connor A. Hart, Linh M. Pham, Ronald L. Walsworth
2019 arXiv   pre-print
Solid-state spin systems including nitrogen-vacancy (NV) centers in diamond constitute an increasingly favored quantum sensing platform.  ...  Our analysis of sensitivity optimization establishes a foundation to stimulate development of new techniques for enhancing solid-state sensor performance.  ...  The best demonstrated pulsed readout methods with ensembles are presently ∼ 100× away from the spin projection limit.  ... 
arXiv:1903.08176v1 fatcat:tzw3xp7pcnevzkr5cad7u2x7kq

Cavity-enhanced microwave readout of a solid-state spin sensor

Erik R Eisenach, John F Barry, Michael F O'Keeffe, Jennifer M Schloss, Matthew H Steinecker, Dirk R Englund, Danielle A Braje
2021 Nature Communications  
Our results pave a clear path to achieve unity readout fidelity of solid-state spin sensors through increased ensemble size, reduced spin-resonance linewidth, or improved cavity quality factor.  ...  Here we demonstrate high-fidelity, room-temperature readout of an ensemble of nitrogen-vacancy centers via strong coupling to a dielectric microwave cavity, building on similar techniques commonly applied  ...  In this work, we demonstrate a non-optical readout technique for solid-state spin-ensemble sensors.  ... 
doi:10.1038/s41467-021-21256-7 pmid:33649326 fatcat:mokikddh35euth67vinbuxl7sy

Robust Magnetometry with Single NV Centers via Two-step Optimization [article]

Nimba Oshnik, Phila Rembold, Tommaso Calarco, Simone Montangero, Elke Neu, Matthias M. Müller
2022 arXiv   pre-print
However, these shallow NV centers experience considerable noise from the surface, reducing their lifetimes and consequently their sensing capabilities.  ...  Both spin readout and manipulation processes are enhanced by designing laser pulses and microwave controls via closed-loop optimal control.  ...  ACKNOWLEDGMENTS We thank A. Marshall, F. Motzoi, R. Nelz, S. Z. Ahmed, T. Reisser and M. Rossignolo for their insights and suggestions. We furthermore thank T.  ... 
arXiv:2111.12684v2 fatcat:yeriyrsa5veh5gi462gf34j6zq

Spin Readout Techniques of the Nitrogen-Vacancy Center in Diamond

David Hopper, Henry Shulevitz, Lee Bassett
2018 Micromachines  
The diamond nitrogen-vacancy (NV) center is a leading platform for quantum information science due to its optical addressability and room-temperature spin coherence.  ...  However, measurements of the NV center's spin state typically require averaging over many cycles to overcome noise.  ...  Assuming the NV center is illuminated with an optical excitation rate similar to γ r (i.e., close to optical saturation, which is generally ideal for traditional PL readout), a spin population initially  ... 
doi:10.3390/mi9090437 pmid:30424370 pmcid:PMC6187496 fatcat:fky6qwhbavekxiz3k5wj36ebre

Quantum Heterodyne Sensing of Nuclear Spins via Double Resonance [article]

Jonas Meinel, Minsik Kwon, Durga Dasari, Hitoshi Sumiya, Shinobu Onoda, Junichi Isoya, Vadim Vorobyov, Jörg Wrachtrup
2022 arXiv   pre-print
We demonstrate this principle on a single NV center, both with an intrinsic ^14N and a weekly coupled ^13C nuclear spin in the bath surrounding single NV centres.  ...  It uses a series of modified Hahn echo pulse sequences applied coherently with precession signal resulting in a subsampled NMR signal.  ...  The NV population is measured with an optical readout pulse (green). The nuclear spin precession is continued with a (3π/2) rf,90 • .  ... 
arXiv:2205.10182v1 fatcat:tdauy7ca6ndfxngb4y37grwymm

Quantum Control for Nanoscale Spectroscopy With Diamond Nitrogen-Vacancy Centers: A Short Review

Santiago Hernández-Gómez, Nicole Fabbri
2021 Frontiers in Physics  
The nitrogen-vacancy (NV) color center has attracted a particular interest, thanks to its outstanding spin properties and optical addressability.  ...  The technological progress and the widening of potential sensing applications have induced an increasing demand for performance advances of NV quantum sensors.  ...  This method is inherently limited to magnetic fields with amplitude and orientation such that the spin quantization axis remains aligned with the NV symmetry axis: since the NV readout relies on spin-dependent  ... 
doi:10.3389/fphy.2020.610868 fatcat:yvhbdjaowfb7bl3kjflgtdjamy

Hyperpolarization-enhanced NMR spectroscopy with femtomole sensitivity using quantum defects in diamond [article]

Dominik B. Bucher, David R. Glenn, Hongkun Park, Mikhail D. Lukin, Ronald L. Walsworth
2018 arXiv   pre-print
Recently, a new class of NMR sensors based on optically-probed nitrogen-vacancy (NV) quantum defects in diamond have allowed molecular spectroscopy from sample volumes several orders of magnitude smaller  ...  Nuclear magnetic resonance (NMR) spectroscopy is a widely used tool for chemical analysis and molecular structure identification.  ...  Methods NV ensemble NMR sensor.  ... 
arXiv:1810.02408v1 fatcat:ottipr67dbfhzlowvmk3ujzs2a

High-resolution magnetic resonance spectroscopy using a solid-state spin sensor

David R. Glenn, Dominik B. Bucher, Junghyun Lee, Mikhail D. Lukin, Hongkun Park, Ronald L. Walsworth
2018 Nature  
We demonstrate a synchronized readout (SR) technique for spectrally selective detection of oscillating magnetic fields with sub-millihertz resolution, using coherent manipulation of solid state spins.  ...  The SR technique is implemented in a sensitive magnetometer (50 picotesla/Hz ½ ) based on nitrogen vacancy (NV) centers in diamond, and used to detect nuclear magnetic resonance (NMR) signals from liquidstate  ...  We thank Roger Fu for assisting with acquisition of the electromagnet used to create the applied bias field; and Matthew Rosen for guidance on NMR techniques.  ... 
doi:10.1038/nature25781 pmid:29542693 fatcat:e5k43trqnzggffue2rgoiumcru

Principles and Techniques of the Quantum Diamond Microscope [article]

Edlyn V. Levine, Matthew J. Turner, Pauli Kehayias, Connor A. Hart, Nicholas Langellier, Raisa Trubko, David R. Glenn, Roger R. Fu, Ronald L. Walsworth
2019 arXiv   pre-print
The QDM employs a dense layer of fluorescent nitrogen-vacancy (NV) color centers near the surface of a transparent diamond chip on which a sample of interest is placed.  ...  NV electronic spins are coherently probed with microwaves and optically initialized and read out to provide spatially resolved maps of local magnetic fields.  ...  wholly owned subsidiary of Honeywell International, Inc., for the U.S.  ... 
arXiv:1910.00061v1 fatcat:2vl2qscl35adlcizmzxioekjqa

Principles and techniques of the quantum diamond microscope

Edlyn V. Levine, Matthew J. Turner, Pauli Kehayias, Connor A. Hart, Nicholas Langellier, Raisa Trubko, David R. Glenn, Roger R. Fu, Ronald L. Walsworth
2019 Nanophotonics  
The QDM employs a dense layer of fluorescent nitrogen-vacancy (NV) color centers near the surface of a transparent diamond chip on which a sample of interest is placed.  ...  NV electronic spins are coherently probed with microwaves and optically initialized and read out to provide spatially resolved maps of local magnetic fields.  ...  Since the NV readout measures a fluorescence intensity, fluorescence intensity instability from the laser or the optics must be minimized for the QDM magnetic sensitivity to reach the photon shot noise  ... 
doi:10.1515/nanoph-2019-0209 fatcat:zbud3swmjnbzhaskruvi3thxm4

High Resolution Magnetic Resonance Spectroscopy Using Solid-State Spins [article]

Dominik B. Bucher, David R. Glenn, Junghyun Lee, Mikhail D. Lukin, Hongkun Park, Ronald L. Walsworth
2017 arXiv   pre-print
We demonstrate a synchronized readout (SR) technique for spectrally selective detection of oscillating magnetic fields with sub-millihertz resolution, using coherent manipulation of solid state spins.  ...  The SR technique is implemented in a sensitive magnetometer (~50 picotesla/Hz^(1/2)) based on nitrogen vacancy (NV) centers in diamond, and used to detect nuclear magnetic resonance (NMR) signals from  ...  We thank Roger Fu for assisting with acquisition of the electromagnet used to create the applied bias field; and Matthew Rosen for guidance on NMR techniques.  ... 
arXiv:1705.08887v2 fatcat:u52fkcautbhd7p5l7bq2hloqpe

Time-keeping with electron spin states in diamond [article]

Jonathan S. Hodges, Dirk Englund
2011 arXiv   pre-print
Using a pulsed spin-echo technique, we anticipate an Allan deviation of σ_y =1E-12 (τ)^(-1/2) with current photoluminescence detection methods and posit exceeding 1E-14 with improved diamond material processing  ...  Here we introduce a complementary device based on spins in a solid-state system - the nitrogen-vacancy defect in single crystal diamond.  ...  The stability for a single NV center can be scaled by collecting the fluorescence of an ensemble of N non-interacting NV centers.  ... 
arXiv:1109.3241v1 fatcat:pxitxsvbq5abjacqwqunpk5s54
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