  Atomic interferometers are often affected by magnetic field fluctuations.
Using the clock transition at zero magnetic field minimizes the effect of these
fluctuations. There is another transition in rubidium that minimizes the
magnetic sensitivity at 3.2 G.We combine the previous two transitions to obtain
minimum magnetic sensitivity at a tunable magnetic field between 2.2 and 3.2 G.
The two interferometers evolve independently from each other and we control the
magnetic sensitivity by changing the population in both transitions with a
microwave pulse.
