A qubit is a linear combination of |0> and |1>, and a qutrit is a linear combination of |0>, |1> and |2>. I remember Scott Aaronson once suggested building QCs

A qubit is a linear combination of |0> and |1>, and a qutrit is a linear combination of |0>, |1> and |2>. I remember Scott Aaronson once suggested building QCs with qudits (or qu-n-its with n>2).