We acknowledge UK EPSRC grants EP/V026496/1,EP/S014403/1 and EP/S030751/1.OK and KWS acknowledge UK EPSRC grants EP/V00171X/1 and EP/X017222/1,and NATO SPS project MYP.G5860.HO acknowledges The Leverhulme Trust(Agreement No.RPG-2022-188).
Rydberg excitons(analogues of Rydberg atoms in condensed matter systems)are highly excited bound electron-hole states with large Bohr radii.The interaction between them as well as exciton coupling to light may lead to...