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Quantum Weak Coin Flipping
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==Notation== # ψ(i) for i∈{0,1}: The predetermined single-qubit states that have equal probability distribution in the computational basis. # θ: The angle between ψ(0) and ψ(1), which determines the bias of the protocol. # a and b: The secret bits chosen by Alice and Bob, respectively, that represent their preferred outcome. # x and y: The random bits chosen by Alice and Bob, respectively, that are used to encode their qubits. # z and w: The classical bits sent by Alice and Bob, respectively, that are the XOR of their secret bit and their random bit, i.e., z=x⊕a and w=y⊕b. # m and n: The results of the measurements performed by Alice and Bob, respectively, on the qubits they kept from the other party. # c: The outcome of the coin flip, which is the XOR of the secret bits and the measurements, i.e., c=a⊕m=b⊕n.
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