Systems and methods for quantum secret splitting based on non-orthogonal
multi-particle states are disclosed. The method includes preparing at a
sender ("Charlie") two qubits each of which can be in one of two
non-orthogonal states and distributing the qubits to respective parties
Alice and Bob. The method also includes measuring at Alice the state of
the qubit she receives by a projective measurement so that the
measurement result is either 0 or 1, and at Bob measuring the state of
the qubit he receives such that the measurement result is either 0, 1 or
f, wherein f represents a failure by Bob to properly measure the qubit
state. The method also includes communicating between Alice, Bob and
Charlie the outcome of their respective measurements so as to deduce the
state of the qubits sent to Alice and Bob.