Tier-one investment banks have initiated pilot deployments of quantum key distribution (QKD) hardware across metropolitan fiber networks to secure inter-bank clearing traffic.
Preparation for Algorithmic Threats
Financial infrastructure providers are acting ahead of regulatory mandates to insulate sensitive transaction ledgers against future quantum computing decryption capabilities.
Integration and Repeater Limitations
Current QKD deployments remain limited by optical signal attenuation, requiring secure physical nodes every 100 kilometers pending optical quantum repeater breakthroughs.