His theories are widely used in the field of quantum optics.

As an undergraduate, he also did research in quantum optics and ecology.

This was the case considered by Einstein, and is nowadays used for quantum optics.

Physical application is in the field of quantum optics.

Sudarshan's most significant work might be his contribution to the field of quantum optics.

An alternative name for the displacement operator in quantum optics.

It is used in the field of quantum optics and particularly for tomographic purposes.

Chiao has become well known in the field of quantum optics due to several important experiments.

Many aspects of modern coherence theory are studied in quantum optics.

The squeeze operator is ubiquitous in quantum optics and can operate on any state.