Direct measurements of spin fluctuations are becoming the mainstream approach for studies
of complex condensed matter, molecular, nuclear, and atomic systems. This review covers …

The minimum resolvable signal in sensing and metrology platforms that rely on optical
readout fields is increasingly constrained by the standard quantum limit, which is determined …

Quantum sensing, along with quantum communications and quantum computing, is
commonly considered as the most important application of quantum optics. Among the …

We study the effect of optical polarization squeezing on the performance of a sensitive,
quantum-noise-limited optically pumped magnetometer. We use Bell-Bloom (BB) optical …

We describe a magnetic gradiometer that operates at finite fields and uses an intense
pulsed laser to polarize a 87 Rb atomic ensemble and a compact vertical-cavity surface …

We study the use of squeezed probe light and evasion of measurement backaction to
enhance the sensitivity and measurement bandwidth of an optically pumped magnetometer …

Vacuum fluctuations of the electromagnetic field set a fundamental limit to the sensitivity of a
variety of measurements, including magnetic resonance spectroscopy. We report the use of …

Quantum technologies use entanglement to outperform classical technologies, and often
employ strong cooling and isolation to protect entangled entities from decoherence by …

Among the known resources of quantum metrology, one of the most practical and efficient is
squeezing. Squeezed states of atoms and light improve the sensing of the phase, magnetic …

We report an experimental and theoretical study of spin-noise correlations in a Rb 87-Cs
133 unpolarized alkali-metal vapor dominated by spin-exchange collisions. We observe …