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 …

Quantum information is a rapidly advancing area of interdisciplinary research. It may lead to
real-world applications for communication and computation unavailable without the …

Linear optics with photon counting is a prominent candidate for practical quantum
computing. The protocol by Knill, Laflamme, and Milburn [2001, Nature (London) 409, 46] …

Multiphoton interference reveals strictly nonclassical phenomena. Its applications range
from fundamental tests of quantum mechanics to photonic quantum information processing …

The heralded generation of entangled states is a long-standing goal in quantum information
processing, because it is indispensable for a number of quantum protocols,. Polarization …

We propose a practical, scalable, and efficient scheme for quantum computation using
spatially separated matter qubits and single-photon interference effects. The qubit systems …

Quantum optical Gaussian states are a type of important robust quantum states which are
manipulatable by the existing technologies. So far, most of the important quantum …

Large-photon-number path entanglement is an important resource for enhanced precision
measurements and quantum imaging. We present a general constructive protocol to create …

The detection of microwave fields at single-photon power levels is a much-sought-after
technology, with practical applications in nanoelectronics and quantum information science …

A parametric down-conversion (PDC) source can be used as either a triggered single-
photon source or an entangled-photon source in quantum key distribution (QKD). The …