Quantum technology is an emergent and potentially disruptive discipline, with the ability to
affect many human activities. Quantum technologies are dual-use technologies, and as such …

Over a hundred years later, the classic antenna, first invented by Heinrich Hertz, in 1888,, is
still the dominant technology used for the measurement of RF fields. Just seven years after …

Rydberg atoms have great potential in electric field measurement and have an advantage
with a large frequency bandwidth from the kHz to the THz scale. However, the sensitivity for …

Recognition of multifrequency microwave (MW) electric fields is challenging because of the
complex interference of multifrequency fields in practical applications. Rydberg atom-based …

In this work, we demonstrate the use of a Rydberg atom-based sensor for determining the
angle of arrival of an incident radio frequency (RF) wave or signal. The technique uses …

We demonstrate a continuously tunable electric field measurement based on the far off-
resonant AC stark effect in a Rydberg atomic vapor cell. In this configuration, a strong far off …

Rydberg atom electric field sensors are projected to enable novel capabilities for resilient
communications and sensing. This quantum sensor is small-size, highly sensitive, and …

The developing frequency-comb spectral technologies have potential applications and
prospects in the wide fields of cosmology, meteorology, and microwave measurement. Here …

This tutorial introduces the theoretical and experimental basics of electromagnetically
induced transparency (EIT) in thermal alkali vapors. We first give a brief phenomenological …

We present a theoretical and experimental investigation of the improvement and
determination of the sensitivity of Rydberg atom-based microwave RF sensor. An optical …