[1] Keeler J[M]. Understanding NMR spectroscopy(2010).
[2] Appelt S, Häsing F W, Sieling U et al. Paths from weak to strong coupling in NMR[J]. Physical Review A, 81, 023420(2010).
[3] Ledbetter M P, Budker D. Zero-field nuclear magnetic resonance[J]. Physics Today, 66, 44-49(2013).
[4] Blanchard J W, Budker D. Zero‐to ultralow‐field NMR[J]. eMagRes, 5, 1395-1410(2016).
[5] Johnson G A, Tian Y Q, Ashbrook D G et al. Merged magnetic resonance and light sheet microscopy of the whole mouse brain[J]. Proceedings of the National Academy of Sciences of the United States of America, 120, e2218617120(2023).
[6] Blanchard J W, Ledbetter M P, Theis T et al. High-resolution zero-field NMR J-spectroscopy of aromatic compounds[J]. Journal of the American Chemical Society, 135, 3607-3612(2013).
[7] Weitekamp D, Bielecki A, Zax D et al. Zero-field nuclear magnetic resonance[J]. Physical Review Letters, 50, 1807-1810(1983).
[8] Clarke J. SQUID fundamentals[M]. SQUID sensors: fundamentals, fabrication, and applications, 1-62(1996).
[9] Gruber A, Dräbenstedt A, Tietz C et al. Scanning confocal optical microscopy and magnetic resonance on single defect centers[J]. Science, 276, 2012-2014(1997).
[10] Schmelz M, Zakosarenko V, Chwala A et al. Thin-film based ultralow noise SQUID magnetometer[J]. IEEE Transactions on Applied Superconductivity, 26, 1600804(2016).
[11] Simmonds M, Fertig W, Giffard R. Performance of a resonant input SQUID amplifier system[J]. IEEE Transactions on Magnetics, 15, 478-481(1979).
[12] Dang H B, Maloof A C, Romalis M V. Ultra-high sensitivity magnetic field and magnetization measurements with an atomic magnetometer[J]. Applied Physics Letters, 97, 151110(2010).
[13] Allred J C, Lyman R N, Kornack T W et al. High-sensitivity atomic magnetometer unaffected by spin-exchange relaxation[J]. Physical Review Letters, 89, 130801(2002).
[14] Nabeel A, Zhou H Y, Urbach E K et al. Quantum sensors for biomedical applications[J]. Nature Reviews. Physics, 5, 157-169(2023).
[15] Mamin H J, Kim M, Sherwood M H et al. Nanoscale nuclear magnetic resonance with a nitrogen-vacancy spin sensor[J]. Science, 339, 557-560(2013).
[16] Lovchinsky I, Sushkov A O, Urbach E et al. Nuclear magnetic resonance detection and spectroscopy of single proteins using quantum logic[J]. Science, 351, 836-841(2016).
[17] Patrick W, Wolfgang F, Rainer K et al. Commercial gigahertz-class NMR magnets[J]. Superconductor Science and Technology, 35, 033001(2022).
[18] Abragam A, Goldman M. Principles of dynamic nuclear polarisation[J]. Reports on Progress in Physics, 41, 395-467(1978).
[19] Goodson B M. Nuclear magnetic resonance of laser-polarized noble gases in molecules, materials, and organisms[J]. Journal of Magnetic Resonance, 155, 157-216(2002).
[20] Bowers C R, Weitekamp D P. Transformation of symmetrization order to nuclear-spin magnetization by chemical reaction and nuclear magnetic resonance[J]. Physical Review Letters, 57, 2645-2648(1986).
[21] Walker T G, Happer W. Spin-exchange optical pumping of noble-gas nuclei[J]. Reviews of Modern Physics, 69, 629-642(1997).
[22] Ardenkjaer-Larsen J H, Fridlund B, Gram A et al. Increase in signal-to-noise ratio of > 10, 000 times in liquid-state NMR[J]. Proceedings of the National Academy of Sciences of the United States of America, 100, 10158-10163(2003).
[23] Braunschweiler L, Ernst R R. Coherence transfer by isotropic mixing: application to proton correlation spectroscopy[J]. Journal of Magnetic Resonance (1969), 53, 521-528(1983).
[24] Norwood T J. Multiple-quantum NMR methods[J]. Progress in Nuclear Magnetic Resonance Spectroscopy, 24, 295-375(1992).
[25] Xu S, Harel E, Michalak D J et al. Flow in porous metallic materials: a magnetic resonance imaging study[J]. Journal of Magnetic Resonance Imaging, 28, 1299-1302(2008).
[26] Hu Y N, Iwata G Z, Mohammadi M et al. Sensitive magnetometry reveals inhomogeneities in charge storage and weak transient internal currents in Li-ion cells[J]. Proceedings of the National Academy of Sciences of the United States of America, 117, 10667-10672(2020).
[27] Savukov I M, Grosz A, Haji-Sheikh M J, Mukhopadhyay S C. Spin exchange relaxation free (SERF) magnetometers[M]. High sensitivity magnetometers. Smart sensors, measurement and instrumentation, 19, 451-491(2017).
[28] Budker D, Romalis M. Optical magnetometry[J]. Nature Physics, 3, 227-234(2007).
[29] Wang K, Ma D Y, Li S R et al. Simultaneous in-situ compensation method of residual magnetic fields for the dual-beam SERF atomic magnetometer[J]. Sensors and Actuators A: Physical, 349, 114055(2023).
[30] Li J D, Quan W, Zhou B Q et al. SERF atomic magnetometer-recent advances and applications: a review[J]. IEEE Sensors Journal, 18, 8198-8207(2018).
[31] Seltzer S J[M]. Developments in alkali-metal atomic magnetometry, 160-185(2008).
[32] Liu G B, Li X F, Sun X P et al. Ultralow field NMR spectrometer with an atomic magnetometer near room temperature[J]. Journal of Magnetic Resonance, 237, 158-163(2013).
[33] Fitzgerald R. New atomic magnetometer achieves subfemtotesla sensitivity[J]. Physics Today, 56, 21-24(2003).
[34] Zhou X, Liu G B, Sun X P et al. A NMR device and measurement method based on laser atomic magnetometer[P].
[35] Zhou X, Wang X F, Sun X P et al. A positioning sampling device and method for low field magnetic resonance systems[P].
[36] Xu S J, Lowery T L, Budker D et al. Atomic magnetic gradiometer for room temperature high sensitivity magnetic field detection[P].
[37] Liu Z D, Zhao M X, Wu C J et al. NMR study of low-pressure 129Xe gas[J]. Chemical Physics Letters, 194, 440-445(1992).
[38] Ledbetter M P, Crawford C W, Pines A et al. Optical detection of NMR J-spectra at zero magnetic field[J]. Journal of Magnetic Resonance, 199, 25-29(2009).
[39] Jiang M, Bian J, Li Q et al. Zero- to ultralow-field nuclear magnetic resonance and its applications[J]. Fundamental Research, 1, 68-84(2021).
[40] Theis T, Blanchard J W, Butler M C et al. Chemical analysis using J-coupling multiplets in zero-field NMR[J]. Chemical Physics Letters, 580, 160-165(2013).
[41] Butler M C, Ledbetter M P, Theis T et al. Multiplets at zero magnetic field: the geometry of zero-field NMR[J]. The Journal of Chemical Physics, 138, 184202(2013).
[42] Ledbetter M P, Theis T, Blanchard J W et al. Near-zero-field nuclear magnetic resonance[J]. Physical Review Letters, 107, 107601(2011).
[43] Appelt S, Häsing F W, Kühn H et al. Phenomena in J-coupled nuclear magnetic resonance spectroscopy in low magnetic fields[J]. Physical Review A, 76, 023420(2007).
[44] Kovtunov K V, Pokochueva E V, Salnikov O G et al. Hyperpolarized NMR spectroscopy: d-DNP, PHIP, and SABRE techniques[J]. Chemistry, an Asian Journal, 13, 1857-1871(2018).
[45] Sze K H, Wu Q L, Tse H S, Zhu G et al. Dynamic nuclear polarization: new methodology and applications[M]. NMR of proteins and small biomolecules. Topics in current chemistry, 326, 215-242(2011).
[46] Bowers C R. Sensitivity enhancement utilizing parahydrogen[J]. Encyclopedia of Nuclear Magnetic Resonance, 9, 750-770(2002).
[48] Put P, Pustelny S, Budker D et al. Zero- to ultralow-field NMR spectroscopy of small biomolecules[J]. Analytical Chemistry, 93, 3226-3232(2021).
[49] Blanchard J W, Wu T, Eills J et al. Zero- to ultralow-field nuclear magnetic resonance J-spectroscopy with commercial atomic magnetometers[J]. Journal of Magnetic Resonance, 314, 106723(2020).
[50] Van Dyke E T, Eills J, Picazo-Frutos R et al. Relayed hyperpolarization for zero-field nuclear magnetic resonance[J]. Science Advances, 8, eabp9242(2022).
[51] Blanchard J W, Barbara R, Suslick B A et al. Towards large-scale steady-state enhanced nuclear magnetization with in situ detection[J]. Magnetic Resonance in Chemistry: MRC, 59, 1208-1215(2021).
[52] Picazo-Frutos R, Stern Q, Blanchard J W et al. Zero- to ultralow-field nuclear magnetic resonance enhanced with dissolution dynamic nuclear polarization[J]. Analytical Chemistry, 95, 720-729(2022).
[53] Yashchuk V V, Granwehr J, Kimball D F et al. Hyperpolarized xenon nuclear spins detected by optical atomic magnetometry[J]. Physical Review Letters, 93, 160801(2004).
[54] Zhou X, Tan Z, Sun X P et al. A near zero field magnetic resonance spectroscopy device and measurement method[P].
[55] Jiménez-Martínez R, Kennedy D J, Rosenbluh M et al. Optical hyperpolarization and NMR detection of 129Xe on a microfluidic chip[J]. Nature Communications, 5, 3908(2014).
[56] Kennedy D J, Seltzer S J, Jiménez-Martínez R et al. An optimized microfabricated platform for the optical generation and detection of hyperpolarized 129Xe[J]. Scientific Reports, 7, 43994(2017).
[57] Burueva D B, Eills J, Blanchard J W et al. Chemical reaction monitoring using zero‐field nuclear magnetic resonance enables study of heterogeneous samples in metal containers[J]. Angewandte Chemie-International Edition, 59, 17026-17032(2020).
[58] Jiang M, Xu W J, Li Q et al. Interference in atomic magnetometry[J]. Advanced Quantum Technologies, 3, 2000078(2020).
[59] Alcicek S, Put P, Kontul V et al. Zero-field NMR J-spectroscopy of organophosphorus compounds[J]. The Journal of Physical Chemistry Letters, 12, 787-792(2021).
[60] Alcicek S, Put P, Barskiy D et al. Zero-field NMR of urea: spin-topology engineering by chemical exchange[J]. The Journal of Physical Chemistry Letters, 12, 10671-10676(2021).
[61] Kurian K K G, Madhu P K, Rajalakshmi G. Solid-state NMR signals at zero-to-ultra-low-field[J]. Journal of Magnetic Resonance Open, 10, 100049(2022).
[62] Alcicek S, Put P, Kubrak A et al. Zero- to low-field relaxometry of chemical and biological fluids[J]. Communications Chemistry, 6, 165(2023).
[63] Sjolander T F, Tayler M C D, Kentner A et al. 13C-decoupled J-coupling spectroscopy using two-dimensional nuclear magnetic resonance at zero-field[J]. The Journal of Physical Chemistry Letters, 8, 1512-1516(2017).
[64] Sjolander T F, Blanchard J W, Budker D et al. Two-dimensional single- and multiple-quantum correlation spectroscopy in zero-field nuclear magnetic resonance[J]. Journal of Magnetic Resonance, 318, 106781(2020).
[65] Zhukov I V, Kiryutin A S, Yurkovskaya A V et al. Correlation of high-field and zero- to ultralow-field NMR properties using 2D spectroscopy[J]. The Journal of Chemical Physics, 154, 144201(2021).
[66] Mouloudakis K, Bodenstedt S, Azagra M et al. Real-time polarimetry of hyperpolarized 13C nuclear spins using an atomic magnetometer[J]. The Journal of Physical Chemistry Letters, 14, 1192-1197(2023).
[67] Griffith W C, Knappe S, Kitching J. Femtotesla atomic magnetometry in a microfabricated vapor cell[J]. Optics Express, 18, 27167-27172(2010).
[68] Wyllie R, Kauer M, Smetana G S et al. Magnetocardiography with a modular spin-exchange relaxation-free atomic magnetometer array[J]. Physics in Medicine and Biology, 57, 2619-2632(2012).
[69] Fang J C, Wang T, Zhang H et al. Optimizations of spin-exchange relaxation-free magnetometer based on potassium and rubidium hybrid optical pumping[J]. The Review of Scientific Instruments, 85, 123104(2014).
[70] Fang J C, Li R J, Duan L H et al. Study of the operation temperature in the spin-exchange relaxation free magnetometer[J]. Review of Scientific Instruments, 86, 073116(2015).
[71] Chen B T, Jiang M, Ji Y L et al. Spin-exchange relaxation free atomic magnetometer for zero-field nuclear magnetic resonance detection[J]. Chinese Journal of Lasers, 44, 1004001(2017).
[72] Wang Y X, Jin G, Tang J J et al. Optimized gas pressure of an Rb vapor cell in a single-beam SERF magnetometer[J]. Optics Express, 30, 336-348(2022).
[73] Tian M N, Quan W, Jiang L W et al. Single-beam NMOR atomic magnetometer based on a fiberized EOM[J]. Optics Letters, 48, 3075-3078(2023).
[74] Li R J, Quan W, Fan W F et al. A dual-axis, high-sensitivity atomic magnetometer[J]. Chinese Physics B, 26, 120702(2017).
[75] Sheng J W, Wan S G, Sun Y F et al. Magnetoencephalography with a Cs-based high-sensitivity compact atomic magnetometer[J]. The Review of Scientific Instruments, 88, 094304(2017).
[76] Huang S J, Zhang G Y, Hu Z H et al. Human magnetoencephalography measurement by highly sensitive SERF atomic magnetometer[J]. Chinese Journal of Lasers, 45, 1204006(2018).
[77] Osborne J, Orton J, Alem O et al. Fully integrated standalone zero field optically pumped magnetometer for biomagnetism[J]. Proceedings of SPIE, 10548, 105481G(2018).
[78] Limes M E, Foley E L, Kornack T W et al. Portable magnetometry for detection of biomagnetism in ambient environments[J]. Physical Review Applied, 14, 011002(2020).
[79] Zhang G Y, Zeng H J, Tan G B et al. An integrated high-sensitivity VCSEL-based spin-exchange relaxation-free magnetometer with optical rotation detection[J]. IEEE Sensors Journal, 22, 7700-7708(2022).
[80] Savukov I M, Zotev V S, Volegov P L et al. MRI with an atomic magnetometer suitable for practical imaging applications[J]. Journal of Magnetic Resonance, 199, 188-191(2009).
[81] Michalak D J, Xu S J, Lowery T J et al. Relaxivity of gadolinium complexes detected by atomic magnetometry[J]. Magnetic Resonance in Medicine, 66, 603-606(2011).
[82] Xu S J, Yashchuk V V, Donaldson M H et al. Magnetic resonance imaging with an optical atomic magnetometer[J]. Proceedings of the National Academy of Sciences of the United States of America, 103, 12668-12671(2006).
[83] Xu S J, Crawford C W, Rochester S et al. Submillimeter-resolution magnetic resonance imaging at the Earth’s magnetic field with an atomic magnetometer[J]. Physical Review A, 78, 013404(2008).
[84] Savukov I, Karaulanov T. Anatomical MRI with an atomic magnetometer[J]. Journal of Magnetic Resonance, 231, 39-45(2013).
[85] Savukov I, Karaulanov T. Multi-flux-transformer MRI detection with an atomic magnetometer[J]. Journal of Magnetic Resonance, 249, 49-52(2014).
[86] Savukov I, Karaulanov T. Magnetic-resonance imaging of the human brain with an atomic magnetometer[J]. Applied Physics Letters, 103, 43703(2013).
[87] Kim Y J, Savukov I. Parallel high-frequency magnetic sensing with an array of flux transformers and multi-channel optically pumped magnetometer for hand MRI application[J]. Journal of Applied Physics, 128, 154503(2020).
[88] Wu Z K, Chai Z, Mao Y K et al. High-resolution optical magnetic resonance imaging of electronic spin polarization in miniaturized atomic sensors[J]. Applied Physics Letters, 121, 204103(2022).
[89] Hori S, Oida T, Moriya T et al. Magnetic shieldless ultra-low-field MRI with an optically pumped magnetometer[J]. Journal of Magnetic Resonance, 343, 107280(2022).
[90] Bevilacqua G, Biancalana V, Dancheva Y et al. Restoring narrow linewidth to a gradient-broadened magnetic resonance by inhomogeneous dressing[J]. Physical Review Applied, 11, 024049(2019).
[91] Bevilacqua G, Biancalana V, Dancheva Y et al. Sub-millimetric ultra-low-field MRI detected in situ by a dressed atomic magnetometer[J]. Applied Physics Letters, 115, 174102(2019).
[92] Wickenbrock A, Tricot F, Renzoni F. Magnetic induction measurements using an all-optical 87Rb atomic magnetometer[J]. Applied Physics Letters, 103, 243503(2013).
[93] Zhou X, Guo J, Sun X P et al. A magnetic resonance atomic gyroscope device with adjustable temperature gradient[P].
[94] Zhou X, Tan Z, Sun X P et al. Atomic magnetometer based on atomic vapor quantum correlation light source[P].
[95] Sasaki K, Nakamura Y, Gu H et al. Magnetic field imaging by hBN quantum sensor nanoarray[J]. Applied Physics Letters, 122, 244003(2023).