The 2nd Terrestrial Very-Long-Baseline Atom Interferometry (TVLBAI) workshop in London follows the successful TVLBAI workshop hosted at CERN in March 2023 [A] and its comprehensive Workshop Summary that has now been accepted for publication in the AVS journal [B].

This upcoming workshop will convene experts from around the world to explore the exciting advancements in large-scale atom interferometer prototypes and their potential applications in detecting ultralight dark matter and gravitational waves.

The primary objectives of the workshop are to discuss the technology and physics drivers for large-scale Atom Interferometry as well as to establish the foundation for an international TVLBAI proto-collaboration. This proto-collaborative effort aims to bring together researchers from diverse institutions, fostering strategic discussions and securing funding for terrestrial large-scale Atom Interferometer projects. The goal is to develop a comprehensive roadmap outlining design choices, technological considerations, and science drivers for one or more kilometer-scale detectors, expected to become operational in the mid-2030s.

Key activities during the workshop will include reviewing advancements since previous meetings and dedicating time to the formalization of the proto-collaboration, clarifying roles and responsibilities, forging effective communication strategies, and coordinating efforts across the board. These processes are vital for the advancement of future large-scale Atom Interferometry initiatives.

Participants will also engage in focused working sessions with the aim of creating a forthcoming comprehensive roadmap. This guiding document will delineate strategic design and technology considerations, set clear timelines, and identify crucial milestones essential for the successful and timely deployment of kilometer-scale detectors, marking the initiation of work towards its realisation.

Moreover, the workshop will cultivate a sense of community among participants, building a supportive network of both experts and enthusiasts eager to push the boundaries of Atom Interferometry for ground-breaking scientific discoveries. This communal support is fundamental to the momentum and success of subsequent collective endeavours.

[A] https://indico.cern.ch/event/1208783/

[B] Abend, Sven, et al. (2023). "Terrestrial Very-Long-Baseline Atom Interferometry: Workshop Summary." [arXiv:2310.08183]. https://arxiv.org/abs/2310.08183