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- W4313463025 abstract "In this work we study the role of parasitic interactions and microwave crosstalk in a system of two superconducting artificial atoms interacting via a single-mode coplanar waveguide. Through a general description of the effective dynamics of the atoms, beyond the two-level approximation, we show that the atom selectivity (ability to individually address an atom) is only dependent on the resultant phasor associated to the drives used to control the system. We then exploit the benefits of such a drive-dependent selectivity to describe how the coherent population inversion occurs in the atoms simultaneously, with no interference of residual atom-atom interaction. In this scenario the parasitic interaction works as a resource to fast and high fidelity control, as it gives rise to a new regime of frequencies for the atoms able to suppress effective atom-atom coupling (idling point). To end, we show how an entangling $i$SWAP gate is implemented with fidelity higher than $99%$, even in presence of parasitic interactions. More than that, we argue that the existence of this interaction can be helpful to speed up the gate performance. Our results open prospects to a new outlook on the real role of such ``undesired effects in a system of superconducting artificial atoms." @default.
- W4313463025 created "2023-01-06" @default.
- W4313463025 creator A5014230231 @default.
- W4313463025 date "2023-01-03" @default.
- W4313463025 modified "2023-10-15" @default.
- W4313463025 title "Role of parasitic interactions and microwave crosstalk in dispersive control of two superconducting artificial atoms" @default.
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- W4313463025 doi "https://doi.org/10.1103/physreva.107.012602" @default.
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