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  ____       ___                _____    _    _   
 |  _ \\    / _ \\      ___    |  ___|| | |  | || 
 | |_| ||  / //\ \\    /   ||  | ||__   | |/\| || 
 | .  //  |  ___  ||  | [] ||  | ||__   |  /\  || 
 |_|\_\\  |_||  |_||   \__ ||  |_____|| |_// \_|| 
 `-` --`  `-`   `-`     -|_||  `-----`  `-`   `-` 
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Text this: Mutually unbiased bases for the rotor degree of freedom