  There has been growing speculation that a pair density wave state is a key
component of the phenomenology of the pseudogap phase in the cuprates.
Recently, direct evidence for such a state has emerged from an analysis of
scanning tunneling microscopy data in halos around the vortex cores. By
extrapolation, these vortex halos would then overlap at a magnetic field scale
where quantum oscillations have been observed. Here, we show that a biaxial
pair density wave state gives a unique description of the quantum oscillation
data, bolstering the case that the pseudogap phase in the cuprates may be a
pair density wave state.
