Common use of Initial Stage Clause in Contracts

Initial Stage. Step 1: Quantum cloud server Trent prepares 2N GHZ-like states as described in Section 2, which is expressed as: {[P1(1), P1(2), P1(3)], [P2(1), P2(2), P2(3)], ... [P2N(1), P2N(2), P2N(3)],}. Then, Trent divides the GHZ-like particles into three sequences, which are as follows: S1: [P1(1), P2(1), ... , P2N(1) ] S2: [P1(2), P2(2), ... , P2N(2) ] S3: [P1(3), P2(3), ... , P2N(3) ] Trent randomly selects a certain number of single photons in the set of {|0⟩, |1⟩, |+⟩, |-⟩}, which is inserted into the sequences S1, S2 and S3 as decoy photons. Then, ▇▇▇▇▇ sends the sequences S1, S2 and S3 to ▇▇▇▇▇▇▇, ▇▇▇▇▇ and ▇▇▇ respectively.