  Ultralight axion-like particles (ALPs) are well-motivated dark matter
candidates introduced by theories beyond the standard model. However, the
constraints on the existence of ALPs through existing laboratory experiments
are hindered by their current sensitivities, which are usually weaker than
astrophysical limits. Here, we demonstrate a new quantum sensor to search for
ALPs in the mass range that spans about two decades from 8.3 feV to 744 feV.
Our sensor makes use of hyperpolarized long-lived nuclear spins as a
pre-amplifier that effectively enhances coherently oscillating axion-like
dark-matter field by a factor of >100. Using spin-based amplifiers, we achieve
an ultrahigh magnetic sensitivity of 18 fT/Hz$^{1/2}$, which is significantly
better than state-of-the-art nuclear-spin magnetometers. Our experiment
constrains the parameter space describing the coupling of ALPs to nucleons over
our mass range, at 67.5 feV reaching $2.9\times 10^{-9}~\textrm{GeV}^{-1}$
($95\%$ confidence level), improving over previous laboratory limits by at
least five orders of magnitude. Our measurements also constrain the ALP-nucleon
quadratic interaction and dark photon-nucleon interaction with new limits
beyond the astrophysical ones
