The Department of Defense, specifically the Department of the Air Force, is seeking to procure magnesium oxide-doped lithium niobate (MgOLN) phase modulators for ongoing research and development efforts. The procurement includes two types of electro-optic phase modulators with specific technical specifications, which are critical for the development of quantum networks of trapped atoms. The government intends to negotiate a sole-source award with AdvR, Inc., as they are the only known vendor capable of meeting the required performance capabilities, and failure to acquire these modulators could lead to significant delays and increased costs. Interested parties may submit capability statements or proposals to Jennifer Calandra at jennifer.calandra@us.af.mil, with the anticipated award date set for on or before June 10, 2025.