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Figure 2 | EPJ Quantum Technology

Figure 2

From: Universal set of quantum gates for the flip-flop qubit in the presence of 1/f noise

Figure 2

(a) Time evolution of the dc applied electric field \(\Delta E_{z}(t)\) and of the mean values of the operators \(\sigma ^{\mathrm{ff}}_{z}\), \(\sigma ^{\mathrm{ff}}_{x}\), \(\sigma ^{id}_{z}\) and \(|e\rangle \langle e|\) during the evolution of the \(R_{z}(-\frac{\pi }{2})\) gate for the initial state \(|\psi _{0}\rangle =\frac{|0\rangle +|1\rangle }{\sqrt{2}}\). (b) Bloch sphere representation of the \(R_{z}(-\frac{\pi }{2})\) gate. The blue (yellow) arrow represents the initial (final) state in the laboratory frame (left) and in the rotating frame (right)

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