Multi-neighbor interactions enable unit-fidelity controlled-phase gates for distinguishable quantum walkers, making the architecture competitive with indistinguishable-particle designs despite slightly lower intrinsic scattering fidelity.
IIIA, the ideal fidelity of the CP gate for distinguishable plane waves is equal to the square modulus of the transmission coefficientT
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High-fidelity controlled-phase gates for distinguishable quantum walkers via extended interactions
Multi-neighbor interactions enable unit-fidelity controlled-phase gates for distinguishable quantum walkers, making the architecture competitive with indistinguishable-particle designs despite slightly lower intrinsic scattering fidelity.