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. Author manuscript; available in PMC: 2019 May 13.
Published in final edited form as: Phys Rev A (Coll Park). 2018;98:10.1103/PhysRevA.98.023620. doi: 10.1103/PhysRevA.98.023620

FIG. 4.

FIG. 4.

The atom fraction in m = ±1 after 14 ms of evolution time versus the phase shift achieved by a microwave pulse. The amplifier is seeded with 1.0% of the atoms in m = +1 (blue squares) or with 1% of the atoms in each of m = ±1 (black circles) out of N = 3.6(5) × 104 atoms. Solid lines are predictions from the single-mode spinor theory. Single-sided seeding represents multiple experiments and we quote the mean and standard deviation of the mean. Double-sided seeding represents one experiment per phase.