Quan­tum Optics Jena devel­ops and pro­duces solu­tions for tap-proof com­mu­ni­ca­tion sys­tems. Using entan­gled pho­ton pairs, the start-up real­izes quan­tum opti­cal sys­tems for cryp­to­graphic quan­tum key dis­tri­b­u­tion in com­plex IT infra­struc­tures. Fur­ther­more, cus­tomer-spe­cific quan­tum light sources are devel­oped for imag­ing, sen­sor tech­nol­ogy and the net­work­ing of quan­tum computers.