Every word in the title makes sense to me individually.
Essentially, when this gets commercialized we'll be able to make room-temperature qubits using two grapes and a diamond in a microwave oven.
This opens up a whole new field of "grapetronics" for scalable quantum computing hardware.
Basically, an artificial grape.
Only the grapes grown in vineyards of the finest châteaux are capable of achieving the maximum performance needed for bleeding edge grapetronics.
This propels France into a quantum computing superpower, being in sole control of the limited quantity coveted by nation states as strategic assets, with anciliary equipment such as Taiwanese microwave ovens manufactured by Tatung becoming a critical link in the supply chain.
I suspect the grapes take up the role of the molecules here.
Haemoglobin in your blood, for example is a 'tetramer' of four separate units (although technically more like ABAB so a dimer of dimers).