MUMBAI, India, Jan. 2 -- Intellectual Property India has published a patent application (202541122112 A) filed by Vellore Institute Of Technology, Vellore, Tamil Nadu, on Dec. 4, 2025, for 'quantum key distribution system with epr pairs and error correction.'
Inventor(s) include Dr. Swetha. N. G.; Dr. Mugelan RK; Aniruth Ramanathan V; S Rahul; and Karthik Saran E.
The application for the patent was published on Jan. 2, under issue no. 01/2026.
According to the abstract released by the Intellectual Property India: "The present disclosure provides a quantum key distribution system comprising an EPR pair generator configured to generate entangled Einstein-Podolsky-Rosen pairs of qubits, a qubit distributor configured to distribute a first qubit from each entangled pair to a first party and a second qubit from each entangled pair to a second party, wherein the first party and the second party independently measure their respective qubits to generate raw keys, an error correction module configured to correct discrepancies between the raw keys, and a key distillation module configured to apply cryptographic hashing to error-corrected keys and generate symmetric keys. The error correction module implements a Winnow protocol by dividing the raw keys into blocks and performing iterative parity-based error detection and correction. The key distillation module applies SHA-512 hashing and reduces the 512-bit output to generate symmetric keys of 128, 192, or 256 bits."
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