Abstract:In the paper, we first present a quantum multiplier based on quantum Fourier transform (QFT), which is composed by a series of double-controlled phase gates, the control qubits are from the two multipliers, and the controlled qubits are in the ancillary state. By the sequential usage of the double-controlled phase gates, the product could be obtained after the inverse quantum Fourier transform (IQFT) on the final ancillary output state. Then, we further optimize the proposed quantum multiplier. The circuit ana… Show more
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