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Poster Session

Poster Session II

4:00 pm – 6:00 pm, Wednesday June 18 Session H00 Oregon Convention Center, Exhibit Hall E
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Suppressing Differential Light Shifts in 171Yb+ g- and m-type Qubits

Poster 140
Presenter: Drew Anthony Parks (University of California, Los Angeles)
Authors: Thomas Dellaert (University of California, Los Angeles), Wesley Campbell (University of California, Los Angeles)

The omg architecture alleviates the need for co-species trapping by establishing isolated state manifolds within a trapped ion for flexible qubit encoding of state preparation, read out, and cooling. Laser-based quantum gates, however, have limited isolation from spectator manifolds, and light-shift induced dephasing of states not involved with the gate operation can lead to decoherence. Magnetic-field-induced vector light shifts are polarization-dependent, and may be used to eliminate the differential light shift. We perform an experiment to demonstrate that a choice of polarization ellipticity at a given static magnetic field will suppress the differential light shift and increase coherence time of spectator qubits. We demonstrate this effect in 171Yb+ for the 2S1/2 ground clock qubit and present progress on the effect in 2F7/2 metastable clock qubit.

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