Absolute fidelity between a physical system and its virtual replica, the essence of the digital twin, finds its ultimate expression in quantum communication. The startup Qunnect is building the fundamental hardware to make it possible: racks that generate and distribute quantum entanglement through conventional fiber optics. This technology not only promises a hack-proof internet, but establishes the perfect physical layer for digital twins where every bit of information has an inviolable quantum correlate in the real world.
The Carina Rack: Entanglement at the Speed of Light in Urban Fiber 🔗
Qunnect's Carina device integrates into a compact rack the optics and electronics necessary to perform key quantum operations, such as entanglement swapping. This process transfers the quantum property between pairs of photons, extending the network. Recently, they achieved this swap autonomously and at high speed over a 17.6 km link between Brooklyn and Manhattan. The source generates entangled photon pairs using rubidium atoms and lasers, where sub-millimeter precisions, such as the beam angle, are critical. The goal is that, with two of these racks, a functional quantum link can be deployed in hours, not years.
Towards Digital Twins with Physics-Certified Integrity ⚛️
Beyond secure communication, this physical quantum infrastructure will be the backbone of digital twins in critical sectors. In finance, defense, or infrastructure control, the correspondence between the state of the physical network and the data in the virtual twin will be guaranteed by the laws of quantum physics. Any espionage attempt would alter the state, leaving an immediate trace in the twin. Thus, Qunnect's technology not only transports photons, but builds the foundations for a new era of simulation and monitoring with inherent integrity.
How do the principles of quantum mechanics guarantee the inviolable synchronization and absolute fidelity between a physical system and its quantum digital twin?
(P.S.: My digital twin is currently in a meeting, while I'm here modeling. So technically, I'm in two places at once.)