Frequency-multiplexed Hong-Ou-Mandel interference
- URL: http://arxiv.org/abs/2303.09721v1
- Date: Fri, 17 Mar 2023 01:28:57 GMT
- Title: Frequency-multiplexed Hong-Ou-Mandel interference
- Authors: Mayuka Ichihara, Daisuke Yoshida, Feng-Lei Hong, and Tomoyuki Horikiri
- Abstract summary: This study aims to improve the entanglement generation rate by frequency multiplexing the Bell-state measurements.
Results are connected to frequency-selective Bell-state measurements and therefore frequency-multiplexed quantum repeaters.
- Score: 0.0
- License: http://creativecommons.org/licenses/by-nc-nd/4.0/
- Abstract: The implementation of quantum repeaters needed for long-distance quantum
communication requires the generation of quantum entanglement distributed among
the elementary links. These entanglements must be swapped among the quantum
repeaters through Bell-state measurements. This study aims to improve the
entanglement generation rate by frequency multiplexing the Bell-state
measurements. As a preliminary step of the frequency-multiplexed Bell-state
measurements, three frequency modes are mapped to a temporal mode by an atomic
frequency comb prepared in $\mathrm{Pr^{3+}}$ ion-doped $\mathrm{Y_2SiO_5}$
crystals using a weak coherent state, and Hong-Ou-Mandel interference, which is
a measure of the indistinguishability of two inputs, is observed in each
frequency mode by coincidence detection. The visibility for all the modes was
40%-42% (theoretically up to 50%). Furthermore, we show that a mixture of
different modes is avoided. The present results are connected to
frequency-selective Bell-state measurements and therefore frequency-multiplexed
quantum repeaters.
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