Quantum cryptography is arguably the fastest growing area in quantum information science.
Novel theoretical protocols are designed on a regular basis, security proofs are constantly …

In principle, quantum key distribution (QKD) offers information-theoretic security based on
the laws of physics. In practice, however, the imperfections of realistic devices might …

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 …

Quantum cryptography founded on the laws of physics could revolutionize the way in which
communication information is protected. Significant progresses in long-distance quantum …

Quantum key distribution (QKD) using weak coherent states and homodyne detection is a
promising candidate for practical quantum‐cryptographic implementations due to its …

An overview of quantum phase transitions (QPTs) in metallic ferromagnets, discussing both
experimental and theoretical aspects, is given. These QPTs can be classified with respect to …

Continuous-variable quantum key distribution (CV-QKD) protocols based on coherent
detection have been studied extensively in both theory and experiment. In all the existing …

Secret communication over public channels is one of the central pillars of a modern
information society. Using quantum key distribution this is achieved without relying on the …

We introduce a new continuous-variable quantum key distribution (CV-QKD) protocol, self-
referenced CV-QKD, that eliminates the need for transmission of a high-power local …

We study the steady-state photon statistics of a quadratically coupled optomechanical cavity,
which is weakly driven by a monochromatic laser field. We examine the photon blockade by …