Figure 2: Quantum correlation and crosstalk errors in the 225-cell quantum memory. | Nature Communications

Figure 2: Quantum correlation and crosstalk errors in the 225-cell quantum memory.

From: Experimental realization of a multiplexed quantum memory with 225 individually accessible memory cells

Figure 2

(a) The measured intensity cross correlation gc between the signal and the idler photons as a function of the cell index in X and Y directions for the 2D array of 15 × 15 memory cells. The delay between the read and the write pulses is 500 ns. (b) The measured relative coincidence counts between the signal and the idler photons when the write beam, the signal and the idler modes are addressed to one fixed target cell (shown at the center of this figure with the cell index (8, 8)) while the read beam is scanned over the target and its neighboring cells. The relative coincidence counts, with the target one normalized to the unity, characterize the crosstalk errors of the read beams on the neighboring cells. (c) Similar to b, but with the write beam scanned over the neighboring cells, which characterize the crosstalk errors for the write beam.

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