Quantum technologies exploit entanglement to revolutionize computing, measurements, and
communications. This has stimulated the research in different areas of physics to engineer …

This paper reviews quantum spin squeezing, which characterizes the sensitivity of a state
with respect to SU (2) rotations, and is significant for both entanglement detection and high …

Interference is fundamental to wave dynamics and quantum mechanics. The quantum wave
properties of particles are exploited in metrology using atom interferometers, allowing for …

Atom chips provide a versatile quantum laboratory for experiments with ultracold atomic
gases. They have been used in diverse experiments involving low-dimensional quantum …

Entanglement is the key quantum resource for improving measurement sensitivity beyond
classical limits. However, the production of entanglement in mesoscopic atomic systems has …

We use collective oscillations of a two-component Bose-Einstein condensate (2CBEC) of 87
Rb atoms prepared in the internal states| 1〉≡| F= 1, m F=− 1〉 and| 2〉≡| F= 2, m F= 1〉 for …

Quantum Fisher information of a parameter characterizes the sensitivity of the state with
respect to changes of the parameter. In this article, we study the quantum Fisher information …

Advancements in physics are often motivated/accompanied by advancements in our
precision measurements abilities. The current generation of atomic and optical …

Squeezed states, special kinds of entangled states, are known as a useful resource for
quantum metrology. In interferometric sensors, they allow us to overcome …

Useful quantum metrology requires nonclassical states with a high particle number and
(close to) the optimal exploitation of the state's quantum correlations. Unfortunately, the …