清洁，保证清晰的信号在长距离电缆长度，减少对信号的中继器的需要，对总安装成本节省。

Clean, crisp signals are ensured over long cable lengths, decreasing the need for signal Repeaters and saving on total installation costs.

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同时，快速以太网也受距离的限制：铜线接口只支持终端站与中继器之间100米、中继器之间10米。

Also, fast Ethernet is hampered by distance limitations: Its copper interfaces only support distances of 100 meters between an end-station and a repeater, and 10 meters between Repeaters.

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量子中继器可以采用小型钻石芯片来获取，存储和再传输以扩展信息传输范围，使量子网络可跨越更大的距离。

Quantum Repeaters could potentially use small chips of diamond to catch, store and retransmit this information to extend the range, enabling quantum networks to work over much longer distances.

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