A system for gravity measurement comprising: one or more atom sources configured to simultaneously provide three coaxial ensembles of atoms; a laser system configured to provide two or more cooling laser beams (A, C) to cool the three ensembles of atoms and two or more interrogating laser beams (A, B) to interrogate the three ensembles of atoms; a polarizing beamsplitter (600, 650) withaquarter-wave optical retardation plates (602; 614; 652; 664) on the outputs and a retro-reflection assembly (604, 654) in a racetrack configuration, wherein the racetrack configuration is configured to route two of the two or more cooling laser beams (A, C) in opposing directions around a loop topology that intersects the three ensembles of atoms, wherein the racetrack configuration is configured to route two of the two or more interrogating laser beams (A, B) in opposing directions around a loop topology that intersects the three ensembles of atoms, and the system is configured such that the two or more cooling beams (A, C) are input with the same polarizations into separate input ports of the polarizing beamsplitter to generate cooling light with appropriate polarizations or the two or more interrogating laser beams (A, B) are input with orthogonal polarizations into the same input port of the polarizing beamsplitter to generate interferometer interrogation light with appropriate polarizations; a set of detectors operative to detect signals from the three ensembles of atoms resulting from the interferometric interaction light to determine a gravity measure or a gradient of the gravity measure; and a processor configured to provide a cooling indication to cool the atoms using the two or more cooling laser beams, to provide an interrogating indication to interrogate the atoms using the two or more interrogating laser beams, and to provide a detection indication to detect the signals from the three ensembles of atoms using the detector. one or more atom sources configured to simultaneously provide three coaxial ensembles of atoms; a laser system configured to provide two or more cooling laser beams (A, C) to cool the three ensembles of atoms and two or more interrogating laser beams (A, B) to interrogate the three ensembles of atoms; a polarizing beamsplitter (600, 650) withaquarter-wave optical retardation plates (602; 614; 652; 664) on the outputs and a retro-reflection assembly (604, 654) in a racetrack configuration, wherein the racetrack configuration is configured to route two of the two or more cooling laser beams (A, C) in opposing directions around a loop topology that intersects the three ensembles of atoms, wherein the racetrack configuration is configured to route two of the two or more interrogating laser beams (A, B) in opposing directions around a loop topology that intersects the three ensembles of atoms, and the system is configured such that the two or more cooling beams (A, C) are input with the same polarizations into separate input ports of the polarizing beamsplitter to generate cooling light with appropriate polarizations or the two or more interrogating laser beams (A, B) are input with orthogonal polarizations into the same input port of the polarizing beamsplitter to generate interferometer interrogation light with appropriate polarizations; a set of detectors operative to detect signals from the three ensembles of atoms resulting from the interferometric interaction light to determine a gravity measure or a gradient of the gravity measure; and a processor configured to provide a cooling indication to cool the atoms using the two or more cooling laser beams, to provide an interrogating indication to interrogate the atoms using the two or more interrogating laser beams, and to provide a detection indication to detect the signals from the three ensembles of atoms using the detector.