Fig. 3 | npj Quantum Information

Fig. 3

From: A controlled-NOT gate for frequency-bin qubits

Fig. 3

a Conceptual frequency-bin interference in the QFP, for the case of input state 11. Quantum interference suppresses the result 11 at the output, leaving only state 10 in the coincidence basis. b Experimentally measured coincidences over 600 s for all input/output state combinations. c Estimated number of accidentals computed from the product of single detector counts

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