This website claims to use a quantum random number generator (i.e. if you ask it for 6 random digits, each possible sequence of digits will appear with quantum measure 10^-6). Technically, it's not quite guaranteed that using this to select a lottery ticket out of 10^6 possibilities will cause you to win with quantum measure 10^-6, since it is possible that your selection of a lottery ticket could affect which number wins, but it doesn't seem likely that that would have a huge effect.