Figure 2 | Scientific Reports

Figure 2

From: Surpassing the classical limit in magic square game with distant quantum dots coupled to optical cavities

Figure 2

Circuit diagrams for realizing the operations of players. Blue H gate represent a Hadamard gate, purple gates represents Controlled-Z (CZ) gate or \(R_x\), \(R_y\), and \(R_z\) gates which are rotation around x, y, and z axis, respectively. Referee gives the row number a to Alice and column number b to Bob. Alice applies \(A_a\) and Bob applies \(B_b\), each to his/her two spin qubits (\(q_1\) and \(q_2\)) in distant optical cavities through an ancillary photon. As the photon passes through the cavity, the interaction realizes a CZ operation between the photon and spin in the ideal conditions. We used IBM qiskit57 to draw our decomposed circuit diagrams.

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