Improving control and coherence of the 0-π qubit

Despite the great success of the transmon qubit, progress in the coherence times of this qubit has slowed in recent years. Moreover, research within a given qubit design often leads to incremental improvements, while new qubit proposals have the potential to advance the state-of-the-art on performance metrics more substantially. An example of such a proposal is the recently introduced 0-π qubit [1]. We have already shown that the noise resilience of this device can be superior to that of the transmon [2]. In this talk, we characterize control strategies for the 0-π qubit and present a new way to enhance its coherence, taking into consideration disorder in system parameters.
[1] Brooks et al., Phys. Rev. A 87, 52306 (2013).
[2] Groszkowski et al., arXiv:1708.02886 [quant-ph] (2017).