2025/02/05 by Peng, Guanchen, Lanigan, Bryony, Shah, R. +5 · 1 citation
#Atomic Physics (physics.atom-ph) #FOS: Physical sciences
paper · doi:10.48550/arxiv.2502.03334
We present a Raman atom interferometer using large momentum transfer without reversing the direction of the effective wavevector (k-reversal). More specifically, we use a microwave π/2 pulse to manipulate the spin state of 87Rb atoms before applying a Raman light π pulse to achieve 4ℏ k momentum transfer per Raman light pulse. A microwave π pulse in the middle of the interferometer sequence reverses the spin states, which allows closing of the interferometer arms by the same Raman light π pulses without propagation reversal. We present a proof-of-principle demonstration of a 4ℏ k large-momentum-transfer (LMT) atom interferometer and discuss its scalability. Our results extend the scope of using LMT atom optics.