# ZAIGA: Zhaoshan Long-baseline Atom Interferometer Gravitation Antenna

## TL;DR

ZAIGA is an underground laser-linked atom interferometer facility designed for advanced gravitational research, including gravitational wave detection, equivalence principle tests, and gravitational red-shift measurements, utilizing long-baseline atom interferometers and high-precision clocks.

## Contribution

It introduces a novel underground interferometer setup with multiple configurations for comprehensive gravitational experiments.

## Key findings

- Design of a 200-meter underground interferometer complex.
- Implementation of long-baseline atom interferometers and high-precision clocks.
- Potential for detecting gravitational waves and testing fundamental physics.

## Abstract

The Zhaoshan long-baseline Atom Interferometer Gravitation Antenna (ZAIGA) is a new type of underground laser-linked interferometer facility, and is currently under construction. It is in the 200-meter-on-average underground of a mountain named Zhaoshan which is about 80 km southeast to Wuhan. ZAIGA will be equipped with long-baseline atom interferometers, high-precision atom clocks, and large-scale gyros. ZAIGA facility will take an equilateral triangle configuration with two 1-km-apart atom interferometers in each arm, a 300-meter vertical tunnel with atom fountain and atom clocks mounted, and a tracking-and-ranging 1-km-arm-length prototype with lattice optical clocks linked by locked lasers. The ZAIGA facility will be used for experimental research on gravitation and related problems including gravitational wave detection, high-precision test of the equivalence principle of micro-particles, clock based gravitational red-shift measurement, rotation measurement and gravito-magnetic effect.