Stony Brook University researchers have patented a new quantum-secure technology built to protect power grids from cyberattacks, including future attacks powered by quantum computers. The patented system uses quantum communications and advanced networking to defend energy infrastructure against a threat that is still emerging but could soon turn serious.
Quantum-secure communication sits at the core of the invention, designed specifically for networked microgrids. Microgrids are localized energy systems that run independently or alongside the traditional power grid. The technology combines three elements: quantum key distribution, software-defined networking, and real-time power system controls. Together, they shield energy infrastructure from both current cyber threats and future quantum-enabled attacks.
Inventors Peng Zhang, Zefan Tang, and Walter Krawec developed the quantum grid security technology. The patent is jointly assigned to the Research Foundation for SUNY and the University of Connecticut. Their work answers a growing concern among utilities, governments, and infrastructure operators. The question is urgent: how do you secure critical communications when quantum computers could eventually break much of today’s encryption?
Traditional cybersecurity depends on mathematical encryption that powerful quantum computers may one day crack. The patented quantum system removes that weakness entirely. Instead of relying on math, it uses the laws of quantum physics to generate and distribute encryption keys. Those keys resist both current and future computational attacks, making intercepted communications far harder to decode.
Quantum key distribution forms the center of the system, built specifically for networked microgrids. The invention also includes a real-time testing environment. This lets researchers and utilities study how quantum-secure communications perform under realistic operating conditions and simulated cyberattacks. The patent adds a two-level key pool sharing strategy. This keeps communications secure even when parts of the network face attacks or disruptions.
“This granted patent represents the kind of innovation that can emerge when researchers apply fundamental discoveries to real-world challenges,” said Adam DeRosa, assistant vice president for intellectual property and commercial partnerships at Stony Brook. “The patented technology translates the scientific advances in quantum information science, cybersecurity and energy systems generated by Dr. Zheng’s lab into a commercially viable technology for utility providers and companies to integrate in their infrastructure and services.”
National Science Foundation grants supported the research, focusing on quantum communications, cybersecurity, and resilient energy systems. According to the patent, the system blends quantum key distribution with software-defined networking and real-time digital simulation. That combination creates a flexible framework for future power grid operations.
