In an era where cybersecurity challenges continue to grow, Synergy Quantum is once again pushing the boundaries of quantum technology. Building on its expertise in quantum encryption, our team is developing an innovative method to test the limits of Quantum Key Distribution (QKD) using a quantum switch. This groundbreaking approach is set to expose potential vulnerabilities in QKD systems, a core component of next-generation encryption. By harnessing the power of indefinite causal order, the team is working on creating an attack model that can manipulate quantum communication without triggering traditional security defences. With this cutting-edge research, Synergy Quantum is not only advancing the understanding of quantum security but also paving the way for the development of stronger, more resilient encryption protocols to protect against the evolving threats of tomorrow.

In an exciting new development, researchers at Synergy Quantum are embarking on a pioneering experiment to challenge the security of quantum encryption systems. The team is preparing to implement a cutting-edge quantum switch within a Sagnac loop architecture, which could potentially expose vulnerabilities in Quantum Key Distribution (QKD) protocols.

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” This is an exciting moment for our team and the field of quantum cryptography,” said Mr. Jay Oberoi, Founder & CEO, Synergy Quantum, ” We ‘re taking a bold step towards implementing and addressing the unseen risks in quantum communication. The success of this project could redefine how we approach the security of the next generation of encryption technologies.

The groundbreaking idea behind breaking QKD using a quantum switch is reported by Prof. Arun K Pati  and his collaborators Dr Sumit Nandi, Biswaranjan Panda and Prof. Pankaj Agrawal which appeared in a recent paper [Breaking Quantum Key Distributions under Quantum Switch-Based Attack, arXiv:2502.06780 (2025)]. “The concept of exploiting quantum superposition of causal order in the context of QKD security is a natural progression in quantum research,” said Professor Pati.  Dr Nandi and Panda said, “By manipulating the order of quantum operations, we aim to test the very foundations of quantum encryption and reveal hidden vulnerabilities that have remained unnoticed.

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As part of its pioneering efforts in quantum security, Synergy Quantum is currently working on an innovative and ambitious project to practically develop a Quantum Switch capable of breaking QKD systems. This initiative is being driven by Prof. Arun K Pati, Director R&D, Synergy Quantum.  Here, our vision is to explore the potential of indefinite causal order in quantum key distribution systems. Dr. Gautam, Director QKD, Synergy Quantum , the project lead for the experimental implementation, has taken the next crucial step—bringing Professor Pati’s theoretical idea into a working model. “Building a quantum switch that can perform this level of interference and then testing it within a real-world QKD system is the true challenge,” said Dr. Gautam. “This experiment will help us understand the practical implications of such an attack, opening up new areas of research for quantum security and the development of stronger encryption methods.”

The team is poised to integrate the quantum switch into a BB84 QKD testbed, where it will be used to perform an intercept-and-resend attack while minimizing the Quantum Bit Error Rate (QBER) and evading traditional detection methods. This proof-of-concept experiment is expected to shed light on vulnerabilities in current QKD systems, highlighting the need for the development of new security measures to ensure the long-term protection of quantum communications.

“In Conversation with Professor Pati and Dr. Gautam on how Quantum Switch-Based attacks will r evolutioni se Quantum Communication Security.”

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Source: PR Newswire

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