  We theoretically predict that a true bilayer exciton condensate,characterised
by off-diagonal long range order and global phase coherence, can be created in
one-dimensional solid state electron systems. The mechanism by which this
happens is to introduce a single particle hybridization of electron and hole
populations, which locks the phase of the relevant mode and hence invalidates
the Mermin--Wagner theorem. Electron--hole interactions then amplify this
tendency towards off-diagonal long range order, enhancing the condensate
properties by more than an order of magnitude over the noninteracting limit. We
show that the temperatures below which a substantial condensate fraction would
form could reach hundreds of Kelvin, a benefit of the weak screening in
one-dimensional systems.
