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arXiv · 1309.4502

Quantum Process Tomography of a Molmer-Sorensen Interaction

Nir Navon·Nitzan Akerman·Shlomi Kotler·Yinnon Glickman·Roee Ozeri
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Abstract

We report the quantum process tomography of a M$ø$lmer-S$ø$rensen entangling gate. The tomographic protocol relies on a single discriminatory transition, exploiting excess micromotion in the trap to realize all operations required to prepare all input states and analyze all output states. Using a master-slave diode lasers setup, we demonstrate a two-qubit entangling gate, with a fidelity of Bell state production of 0.985(10). We characterize its $χ$-process matrix, the simplest for an entanglement gate on a separable-states basis, and we observe that the dominant source of error is accurately modelled by a quantum depolarization channel.

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Nir Navon, Nitzan Akerman, Shlomi Kotler, Yinnon Glickman, Roee Ozeri. 2013-09-17. Quantum Process Tomography of a Molmer-Sorensen Interaction. https://doi.org/10.1103/physreva.90.010103

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