Quantum technologies for navigation, metrology and cryptography

Quantum navigation and positioning systems allow the trajectory of mobile systems to be determined without the use of GPS.
We would like to learn about the types of systems that currently exist, their level of performance and their associated applications. 

Quantum sensor systems are able to detect the entire electromagnetic spectrum.
The same as for the navigation systems, we would like to learn about the types of sensors that currently exist, their level of performance and their associated applications. 

Quantum cryptography systems allow the security level of communications to be enhanced through the exchanging of tamper-proof keys.
As previously, we would like to learn about the types of systems that currently exist, their level of performance and their associated applications.