Tailoring Multiloop Atom Interferometers with Adjustable Momentum Transfer

Atom Interferometers

Simultaneous Atom Interferometers

We demonstrate phase lock of two > 1.6W Titanium:sapphire lasers with a phase noise of -138 dBc/Hz at 1MHz from the carrier, using an intra-cavity electro-optic phase modulator. The residual phase variance is 2.5 × 10 rad integrated from 1Hz to 10 kHz. Instantaneous offset frequency steps of up to 4MHz are achieved within 200 ns. Simultaneous atom interferometers can make full use of this ultra...

Atom interferometers with scalable enclosed area.

Bloch oscillations (i.e., coherent acceleration of matter waves by an optical lattice) and Bragg diffraction are integrated into light-pulse atom interferometers with large momentum splitting between the interferometer arms, and hence enhanced sensitivity. Simultaneous acceleration of both arms in the same internal states suppresses systematic effects, and simultaneously running a pair of inter...

Diffraction phases in atom interferometers

102ℏk large area atom interferometers.

We demonstrate atom interferometers utilizing a novel beam splitter based on sequential multiphoton Bragg diffractions. With this sequential Bragg large momentum transfer (SB-LMT) beam splitter, we achieve high contrast atom interferometers with momentum splittings of up to 102 photon recoil momenta (102ℏk). To our knowledge, this is the highest momentum splitting achieved in any atom interfero...