Figure | (1) Experimental setup. (IMAGE)
Caption
Figure | (1) Experimental setup. a, Experimental setup of chip-based three-node quantum network. It mainly consists of two quantum links: Bob-Alice and Charlie-Alice, connected by spooled fibers. The signal lights from Bob and Charlie are multiplexed by a dense wavelength division multiplexer (DWDM) before being measured by Alice. Bob and Charlie each have a laser diode (LD), a silicon-based encoder chip, and an off-chip variable optical attenuator (VOA). Alice has a DWDM, a silicon-based decoder chip with polarization tracking capability, and four single-photon detectors (SNSPDs). b, Microscopic view of the encoder chip. c, Microscopic view of the decoder chip. The encoder and decoder chip are coupled to fiber array (FA).
Credit
by Yongqiang Du, Bing-Hong Li et al.
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License
CC BY