Robust device-independent quantum key distribution

In our latest work, we show that DIQKD can, in fact, be made practical via a simple tweak. In employing two random key generation bases instead of one, the secure key region can be dramatically expanded to include present-day loophole-free Bell experiments.

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Quantum Cryptography

Secure key distribution
Random number generation
Database security

Quantum Networks

Signal processing
Integrated photonics
Certification and standards

Quantum Theory

Quantum correlations
Foundations
Quantum information theory

Notice: Dr. Lim is currently on leave from the National University of Singapore.

Our research group is jointly based at the Department of Electrical & Computer Engineering of NUS and at the Centre for Quantum Technologies. Our focus is largely on quantum cryptography and we aim to bring the technology to the market. To that end, we take a two-pronged approach, investing talents and resources in both theoretical and experimental research to develop the next generational quantum-safe networks.

Quantum computers are machines that can break today’s most prevalent encryption systems in minutes. Recent progress in experimental quantum computing shows that this threat is no longer theoretical but real, and large-scale quantum computers are now becoming a reality. Crucially, if successfully implemented, these computers could be used to decrypt any nation’s trade secrets, confidential communication, and military documents retrospectively and remotely. These technological advances are stark reminders that we cannot take information security for granted. Here, at NUS ECE and CQT, our group is working on various aspects of quantum information science and technology, covering quantum cryptography, quantum device engineering, to the foundations of quantum physics.

Funding Support