Quantum Dephasing in a Gated GaAs Triple Quantum Dot due to Nonergodic Noise
Quantum Dephasing in a Gated GaAs Triple Quantum Dot due to Nonergodic Noise
We extract the phase coherence of a qubit defined by singlet and triplet electronic states in a gated GaAs triple quantum dot, measuring on timescales much shorter than the decorrelation time of the environmental noise. In this non-ergodic regime, we observe that the coherence is boosted and several dephasing times …