Bell's theorem proves that quantum theory is inconsistent with local physical models. It has
propelled research in the foundations of quantum theory and quantum information science …

Secure communication is crucial in the Internet Age, and quantum mechanics stands poised
to revolutionize cryptography as we know it today. In this Review, we introduce the …

How to remove detector side channel attacks has been a notoriously hard problem in
quantum cryptography. Here, we propose a simple solution to this problem—measurement …

Quantum key distribution (QKD) offers the promise of absolutely secure communications.
However, proofs of absolute security often assume perfect implementation from theory to …

In this paper, we study the unconditional security of the so-called measurement-device-
independent quantum key distribution (MDIQKD) with the basis-dependent flaw in the …

We propose an efficient strategy to attack a continuous-variable (CV) quantum key
distribution (QKD) system, which we call homodyne detector blinding. This attack strategy …

We experimentally demonstrate that a superconducting nanowire single-photon detector is
deterministically controllable by bright illumination. We found that bright light can temporarily …

Semiconductor avalanche photodiodes (APDs) are commonly used for single photon
detection in quantum key distribution. Recently, many attacks using bright illumination have …

In theory, quantum key distribution (QKD) provides information-theoretic security based on
the laws of physics. Owing to the imperfections of real-life implementations, however, there …

We introduce the concept of a superlinear threshold detector, a detector that has a higher
probability to detect multiple photons if it receives them simultaneously rather than at …