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- W4283220361 abstract "Electron spin qubits are a promising platform for quantum computation. Environmental noise impedes coherent operations by limiting the qubit relaxation ($T_1$) and dephasing ($T_{phi}$) times. There are multiple sources of such noise, which makes it important to devise experimental techniques that can detect the spatial locations of these sources and determine the type of source. In this paper, we propose that anisotropy in $T_1$ and $T_{phi}$ with respect to the direction of the applied magnetic field can reveal much about these aspects of the noise. We investigate the anisotropy patterns of charge noise, evanescent-wave Johnson noise, and hyperfine noise in hypothetical devices. It is necessary to have a rather well-characterized sample to get the maximum benefit from this technique. The general anisotropy patterns are elucidated. We calculate the expected anisotropy for a particular model of a Si/SiGe quantum dot device." @default.
- W4283220361 created "2022-06-22" @default.
- W4283220361 creator A5001373060 @default.
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- W4283220361 date "2022-06-21" @default.
- W4283220361 modified "2023-09-26" @default.
- W4283220361 title "Anisotropy with respect to the applied magnetic field of spin qubit decoherence times" @default.
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- W4283220361 doi "https://doi.org/10.1038/s41534-022-00576-6" @default.
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