From Intra-Datacenter Interconnects to Metro Networks: Does CV-QKD Need Loss- or Bandwidth-Conscious Receivers?

2022/10/01 by Florian Honz, Fabian Laudenbach, Honz, Florian +7
Computer Science · Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #FOS: Physical sciences #Quantum Physics (quant-ph) #Quantum and electron transport phenomena #Quantum-Dot Cellular Automata

paper · pdf · doi:10.48550/arxiv.2210.00230

openalex publication_date 2022/10/01 · openalex created_date 2022/10/06 · openalex updated_date 2026/07/28

Abstract

We experimentally compare a loss-optimized coherent heterodyne and a bandwidth-blessed intradyne CV-QKD architecture. We find the former to prevail performance-wise for medium/long link reach, while the latter features a 5-9 dB higher secure-key rate over short reach.

Related

• Beyond 1 Tb/s Intra-Data Center Interconnect Technology: IM-DD OR Coherent?
• Noise characterization for co-propagation of classical and CV-QKD signals over fiber and free-space link
• Demonstration of an LO-less, DSP-free QPSK Receiver for Data Center Interconnects
• Datacom-Agnostic Shortwave QKD for Short-Reach Links
• Enabling Shortwave-QKD in Short-Reach Networks: Impact of a Composite ODN Native to Telecom Applications