Featured Publications
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High-sensitivity multichannel zero-to-ultralow field NMR with atomic magnetometer arrays
B. Andrews, et al. PNAS Nexus 4, 6 (2025)
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Enhanced Reactivity at the Oil-Water Interface Accelerates the Synthesis of Zymonic Acid in Microemulsions
B. Wallace, et al. Chem. Sci. 16, 15155 (2025).
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Experimental observation of a time rondeau crystal: Temporal Disorder in Spatiotemporal Order
L. Moon, et al. Nature Physics (online) (2025)
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Nanoscale engineering and dynamical stabilization of mesoscopic spin textures
K. Harkins, et al. Science Advances 11, 13, eadn9021 (2025)
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Room-temperature quantum sensing with photoexcited triplet electrons in organic crystals
H. Singh, et al. Phys. Rev. Research 7, 013192 (2025)
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Complex 3-dimensional microscale structures for quantum sensing applications
B. Blankenship, et al. Nano. Lett. 23, 9272 (2023)
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High-Field Magnetometry with Hyperpolarized Nuclear Spins
O, Sahin, et al. Nature Comm 13, 5486 (2022)
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Electron induced nanoscale nuclear spin relaxation probed by hyperpolarization injection
W. Beatrez, et al. Phys. Rev. Lett. 131, 010802 (2023)
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High sensitivity pressure and temperature quantum sensing in organic crystals
H. Singh, et al. Nature Comm. (In Press) (2025)
2025 Publications
L. J. I. Moon†, P. M. Schindler†, R. J. Smith†, E. Druga, Z. R. Zhang, M. Bukov, A. Ajoy [PDF]
arXiv:2410.05625 — Nature Physics (accepted in principle) (2025)
C. Zhang†, R. G. Cortiñas†, A. H. Karamlou†, (…), C. Ramanathan, X. Mi*, C. Bengs*, A. Ajoy*, Z. K. Minev*, N. C. Rubin*, T. E. O’Brien* [PDF]
arXiv:2510.19550
See coverage by the New York Times, Google Tech Blog, Scientific American, Nature, Science News, Guardian, IEEE Spectrum, Reuters,Bloomberg, Financial Times, amongst 50+ other venues
Google Quantum AI and Collaborators [+ C. Zhang, C. Bengs, A. Ajoy] [PDF]
arXiv:2506.10191 — Nature 646, 825 (2025)
See coverage by the New York Times, Google Tech Blog, Scientific American, Nature, Science News, Guardian, IEEE Spectrum, Reuters,Bloomberg, Financial Times, amongst 50+ other venues
L. J. I. Moon†, P. M. Schindler†, Y. Sun, E. Druga, J. Knolle, R. Moessner, H. Zhao, M. Bukov, A. Ajoy [PDF]
Nature Physics (online) (2025)
See coverage by the The Hindu, Quantum Server Materials
H. Singh, N. D'Souza, J. Garrett, A. Singh, B. Blankenship, E. Druga, R. Montis, L. Tan, A. Ajoy [PDF]
arXiv:2410.10705 — Nature Comm. (In Press) (2025)
O. Sahin†, H. Al Asadi†, P. Schindler†, A. Pillai, E. Sanchez, M. Markham, M. Elo, M. McAllister, E. Druga, C. Fleckenstein, M. Bukov, A. Ajoy* [PDF]
arXiv:2206.14945 — Phys. Rev. Research (in press) (2025).
Watch the continuous tracking of stabilized spin trajectories: [Video] .
L. J. I. Moon†, W. Beatrez†, J. Ball, J. Mercade, M. Elo, A. Singh, E. Druga, A. Ajoy [PDF]
Journal of Magnetic Resonance 380, 107952 (2025).
B. Andrews†, M. Lai†, Z. Wang, N. Kato, M. Tayler, E. Druga, A. Ajoy [PDF]
arXiv:2407.00929 — PNAS Nexus 4, 6 (2025)
E Brown, Z. Jones, A. Sarkar, B. Wallace, A. Ajoy*, K. Wilson* [PDF]
Chem. Sci. (2025) [Edge Article]
B. Wallace, M. Makhnun, R. Bachnak, P. Kim, M. Ahmed, C. Dutcher, K. Wilson*, A.Ajoy* [PDF]
Chem. Sci. 16, 15155 (2025) [Edge Article].
N. Nunn, S. Milikisiyants, M. Torelli, A. Healey, R. Styles, B. Johnson, J-P. Tetienne, P. Reineck, C. Long, T. Dumm, A. Dalis, H. Abe, T. Ohshima, L. Moon, E. Druga, A. Ajoy, A.I. Shames, A. Smirnov, O. Shenderova [PDF]
Journal of Physical Chemistry C 129, 7493 (2025).
K. Harkins†, C. Fleckenstein†, N. D'Souza†, P. M. Schindler†, D. Marchiori†, C. Artiaco, Q. Reynard-Feytis, U. Basumallick, W. Beatrez, A. Pillai, M. Hagn, A. Nayak, S. Breuer, X. Lv, M. McAllister, P. Reshetikhin, E. Druga, M. Bukov, A. Ajoy [PDF][SI]
arXiv:2310.05635 — Science Advances 11, 13, eadn9021 (2025)
N. D'Souza†, K. A. Harkins†, C. Selco, U. Basumallick, S. Breuer, Z. Zhang, P. Reshetikhin, M. Ho, A. Nayak, M. McAllister, E. Druga, D. Marchiori, A. Ajoy [PDF]
arXiv:2412.164715 — Journal of Magnetic Resonance 375, 107874 (2025).
Selected as the Journal Cover Article in J. Magn. Res.
H. Singh, N. D'Souza, K. Zhong, E. Druga, J. Oshiro, B. Blankenship, J. A. Reimer, J. D. Breeze, A. Ajoy [PDF]
arXiv:2402.13898 — Phys. Rev. Research 7, 013192 (2025)
B. W. Blankenship†, Y. Rho†, Z. Jones, T. Meier, R. Li, E. Druga, H. Singh, X. Xia, A. Ajoy*, C. P. Grigoropoulos* [PDF]
arXiv:2502.16434
2024 Publications
A. Sarkar†, Z. Jones†, M. Parashar, E. Druga, A. Akkiraju, S. Conti, P. Krishnamoorthi, S. Nachuri, P. Aman, M. Hashemi, N. Nunn, M. Torelli, B. Gilbert, K. R. Wilson, O. Shenderova, D. Tanjore, A. Ajoy [PDF][SI]
arXiv:2404.19313 — Science Advances 10, 50 (2024)
K. A. Harkins†, C. Selco†, C. Bengs, D. Marchiori, L. J. I. Moon, Z. R. Zhang, A. Yang, A. Singh, E. Druga, Y. Q. Song, A. Ajoy [PDF]
arXiv:2410.09028
B. Blankenship, J. Li, Z. Jones, M. Parashar, N. Zhao, H. Singh, R. Li, S. Arvin, A. Sarkar, R. Yang, T. Meier, Y. Rho, A. Ajoy*, C. Grigoropoulos* [PDF][SI]
Nano. Lett. 24, 9711 (2024)
R. Budakian, A. Finkler, A. Eichler, M. Poggio, C. Degen, S. Tabatabaei, I. Lee, C. Hammel, E. Polzik, T. Taminiau, R. Walsworth, P. London, A. Jayich, A. Ajoy, A. Pillai, J. Wrachtrup, F. Jelezko, Y. Bae, A. Heinrich, C. Ast, P. Bertet, P. Cappellaro, C. Bonato, Y. Altmann, E. Gauger [PDF]
arXiv:2312.08841 — Nanotechnology 35, 412001 (2024)
2023 Publications
A. Pillai, M. Elanchezhian, T. Virtanen, S. Conti, A. Ajoy* [PDF]
arXiv:2110.06826 — J. Chem. Phys. 159, 154201 (2023)
Selected as the Journal Cover Article in J. Chem. Phys.
Selected as the Editors' Featured Article in J. Chem. Phys.
B. Blankenship†, Z. Jones†, N. Zhao, H. Singh, A. Sarkar, R. Li, E. Suh, A. Chen, C. Grigoropoulos*, A. Ajoy* [PDF][SI]
arXiv:2307.15233 — Nano. Lett. 23, 9272 (2023)
Spotlighted by Berkeley Engineering: Researchers demonstrate new 3D printing technique for quantum sensors.
W. Beatrez, A. Pillai, O. Janes, D. Suter, A. Ajoy* [PDF][SI]
arXiv:2207.02827 — Phys. Rev. Lett. 131,010802 (2023).
Watch nuclear spins directly probing proximal electron relaxation: [Video 1] , [Video 2] , [Video 3] .
N. Nunn, S. Milikisiyants, M. Torelli, R. Monge, T. Delord, A. I. Shames, C. Meriles, A. Ajoy, A. I. Smirnov, O. Shenderova [PDF]
Journal of Vacuum Science & Technology B 41, 042206 (2023)
Spotlighted as a Featured article in JVST.
W. Beatrez†, C. Fleckenstein†, A. Pillai, E. Sanchez, A. Akkiraju, J. Alcala, S. Conti, P. Reshetikhin, E. Druga, M. Bukov*, A. Ajoy* [PDF]
arXiv:2201.02162 — Nature Physics 19, 407 (2023)
Watch the formation and melting of a time-crystal: [Video 1] , [Video 2] , [Video 3] .
2022 Publications
A. Sarkar, B. Blankenship, E. Druga, A. Pillai, R. Nirodi, S. Singh, A. Oddo, P. Reshetikhin, A. Ajoy* [PDF] [SI]
arXiv:2112.07223 — Phys. Rev. Applied 18, 034079 (2022).
O. Sahin, E. d. L. Sanchez, S. Conti, A. Akkiraju, P. Reshetikhin, E. Druga, A. Aggarwal, B. Gilbert, S. Bhave, A. Ajoy* [PDF] [SI]
arXiv:2112.11612 — Nature Communications 13, 5486 (2022)
Selected as Editors Highlight by Nature Communications
Spotlighted by News & Views in Nature Physics: Magnetometry goes nuclear [pdf]
2021 Publications
W. Beatrez, O. Janes, A. Akkiraju, A. Pillai, A. Oddo, P. Reshetikhin, E. Druga, M. McAllister, M. Elo, B. Gilbert, D. Suter, A. Ajoy* [PDF]
arXiv:2104.01988 -- Phys. Rev. Lett. 127, 170603 (2021).
Selected as Editors Suggestion by PRL
Spotlighted by Physics at PRL: Delaying Thermalization in a Periodically Driven System
Spotlighted in Nature Physics: Keep the spins spinning
A. Ajoy, A. Sarkar, E. Druga, P. Zangara, D. Pagliero, C. A. Meriles, and J. A. Reimer [PDF]
Journal of Magnetic Resonance 331, 107021 (2021).
X. Lv, J.H. Walton, E. Druga, F. Wang, A. Aguilar, T. McKnelly, R. Nazaryan, F. L. Liu, L. Wu, O. Shenderova, D. B. Vigneron, C. A. Meriles, J. A. Reimer, A. Pines, A. Ajoy* [PDF] [SI]
arXiv:1909.08064 — Proc. Natl. Acad. Sci. USA 118, 21 (2021).
Highlight by Berkeley news: Diamonds engage both optical microscopy and MRI for better imaging,
OSA: Dual-Mode Imaging with Diamond Particles, Physics World, Tech Explorist, and by 10+ news outlets including EurekAlert!, ScienMag, Phys.org, Science Daily.
D. Pagliero†, P.R. Zangara†, J. Henshaw, A. Ajoy, R.H. Acosta, J. Reimer, A. Pines, C.A. Meriles [PDF]
Phys. Rev. B 103, 064310 (2021)
P.R. Zangara†, D. Pagliero†, A. Ajoy, R.H. Acosta, J.A. Reimer, C.A. Meriles [PDF]
Phys. Rev. B 103, 085205 (2021)
2020 and Earlier Publications
X. Lv, J. Walton, E. Druga, R. Nazaryan, H. Mao, A. Pines, A. Ajoy, J.A. Reimer [PDF]
Molecules 2021, 26(1), 133
M. Gierth, V. Krespach, A. I. Shames, P. Raghavan, E. Druga, N. Nunn, M. Torelli, R. Nirodi, S. Le, R. Zhao, A. Aguilar, X. Lv, M. Shen, C. A. Meriles, J. A. Reimer, A. Zaitsev, A. Pines, O. Shenderova, and A. Ajoy* [PDF]
arXiv:1911.03322 — Advanced Quantum Technologies 2000050 (2020) .
A. Ajoy*, R. Nirodi, A. Sarkar, P. Reshetikhin, E. Druga, A. Akkiraju, M. McAllister, G. Maineri, S. Le, A. Lin, A. M. Souza, C. A. Meriles, B. Gilbert, D. Suter, J. A. Reimer, and A. Pines [PDF]
arXiv:2008.08323
Y.X. Liu, J. Hines, Z. Li, A. Ajoy, and P. Cappellaro [PDF]
arXiv:1807.07664 — Phys. Rev. A (Rapid Comm.), 102, 010601(R), (2020).
D. Pagliero, P. R. Zangara, J. Henshaw, A. Ajoy, R. H. Acosta, J. A. Reimer, A. Pines, C. A. Meriles [PDF] [SI]
arXiv:2005.00647 — Science Advances 16, eaaz6986 (2020) .
A. Ajoy*, R. Nazaryan, E. Druga, K. Liu, A. Aguilar, B. Han, M. Gierth, J. T. Oon, B. Safvati, R. Tsang, J. H. Walton, D. Suter, C. A. Meriles, J. A. Reimer and A. Pines [PDF]
arXiv:1811.10218 — Rev. Sci. Instru. 91, 023106 (2020) .
Youtube video highlighting "Ultracompact Nanodiamond Hyperpolarizer".
A. Ajoy*, B. Safvati, R. Nazaryan, J. T. Oon, B. Han, P. Raghavan, R. Nirodi, A. Aguilar, K. Liu, X. Cai, X. Lv, E. Druga, C. Ramanathan, J. A. Reimer, C. A. Meriles, D. Suter, and A. Pines [PDF] [SI]
arXiv:1902.06204 — Nature Communications 10, 5160 (2019) .
J. Henshaw, D. Pagliero, P.R. Zangara, B. Franzoni, A. Ajoy, R. Acosta, J. Reimer, A. Pines, C. A. Meriles [PDF]
Proc. Natl. Acad. Sci. USA 116, 18334 (2019).
J.-C. Jaskula†, K. Saha†, A. Ajoy, D. J. Twitchen, M. Markham, and P. Cappellaro [PDF]
arXiv:1808.04494 — Phys. Rev. Applied 11, 054010 (2019)
F. Rajabi, S. Motlakunta, C.-Y. Shih, N. Kotibhaskar, Q. Quraishi, A. Ajoy, and R. Islam [PDF]
arXiv:1808.06124 — npj Quantum Information 5, 32 (2019)
P.R. Zangara, J. Henshaw, D. Pagliero, A. Ajoy, J. Reimer, A. Pines, C. Meriles [PDF]
arXiv:1904.08563 — Nano Letters 19, 2389 (2019)
Y. X. Liu†, A. Ajoy† and P. Cappellaro [PDF] [SI]
arXiv:1611.04691 — Phys. Rev. Lett. 122, 100501 (2019)
Spotlighted by MIT News
YouTube video highlighting "Wide dynamic field cycling".
YouTube video highlighting "Printing coils for NMR".
A. Ajoy*, X. Lv, E. Druga, K. Liu, B. Safvati, A. Morabe, M. Fenton, R. Nazaryan, S. Patel, T. Sjolander, J. Reimer, D Sakellariou, C. Meriles and A. Pines [PDF]
arXiv:1808.06124 — Rev. Sci. Instru. 90, 013112 (2019)
P.R. Zangara, S. Dhomkar, A. Ajoy, K. Liu, R. Nazaryan, D. Pagliero, D. Suter, J. Reimer, A. Pines, C. Meriles [PDF] [SI]
Proc. Natl. Acad. Sci., 1811994116, (2019).
A. Ajoy*†, U. Bissbort†, D. Poletti and P. Cappellaro [PDF] [SI]
arXiv:1710.03987 — Phys. Rev. Lett. 122, 013205 (2019)
A. Ajoy*, K. Liu, R. Nazaryan, X. Lv, P. Zangara, B. Safvati, G. Wang, D. Arnold, G. Li, A. Lin, P. Raghavan, E. Druga, S. Dhomkar, D. Pagliero, J. Reimer, D. Suter, C. Meriles and A.Pines [PDF] [SI]
arXiv:1807.07664 — Science Advances 4, eaar5492 (2018).
Spotlighted by Berkeley News, LBNL News, MRS Bulletin, R&D Magazine, Technology Networks, Phys.org, MRC Biomedical Picture of the Day.
D. Pagliero, K.R. Koteswara Rao, P.R. Zangara, S. Dhomkar, H.H. Wong, A. Abril, N. Aslam, A. Parker, J. King, C.E. Avalos, A. Ajoy, J. Wrachtrup, A. Pines, C.A. Meriles [PDF]
arXiv:1711.07576 — Phys. Rev. B. 97, 024422 (2018).
Selected as an Editor's Suggestion.
L. Marseglia, K. Saha, A. Ajoy, T. Schroder, D. R. Englund, T. Teraji, J. Isoya, F. Jelezko, R. Walsworth, J. L. Pacheco, D. Perry, E. Bielejec and P. Cappellaro [PDF]
Optics Express 26, 80, (2018).
Spotlighted by MIT NEWS.
A. Ajoy, Y. X. Liu, K. Saha, L. Marseglia, J.-C. Jaskula, U. Bissbort and P. Cappellaro [PDF][SI]
arXiv:1604.01677 -- Proc. Natl. Acad. Sci. 114, 2149 (2017).
Spotlighted by MIT News and Chemistry World
A. Ajoy, U. Bissbort, M.D. Lukin, R.L. Walsworth and P. Cappellaro [PDF] [SI]
Spotlighted by Phys. Org.
A. Ajoy* and P. Cappellaro [PDF] [SI]
arXiv:0911.5467 — Phys. Rev. A 85, 030303(R) (2012) Rapid Communication.