qutrit

A qutrit is a unit of quantum information that can exist in three possible states.

The qutrit's basis states are orthogonal.

These are used to describe the qutrit as a superposition in the form of a linear combination of the three states:

A qutrit has three orthogonal basis states, or vectors, often denoted , , and in Dirac or bra-ket notation.

The qutrit is analogous to the classical trit, just as the qubit, a quantum particle of two possible states, is analogous to the classical bit.