All our former experience with application of quantum theory seems to say that what is
predicted by quantum formalism must occur in the laboratory. But the essence of quantum …

Quantum computers hold the promise of solving certain computational tasks much more
efficiently than classical computers. We review recent experimental advances towards a …

Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

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

Quantum technologies based on photons will likely require an integrated optics architecture
for improved performance, miniaturization, and scalability. We demonstrate high-fidelity …

A key requirement for scalable quantum computing is that elementary quantum gates can be
implemented with sufficiently low error. One method for determining the error behavior of a …

Photonic quantum technology provides a viable route to quantum communication,, quantum
simulation and quantum information processing. Recent progress has seen the realization of …

Single-photon sources based on semiconductor quantum dots offer distinct advantages for
quantum information, including a scalable solid-state platform, ultrabrightness and …

Quantum computation promises to solve fundamental, yet otherwise intractable, problems
across a range of active fields of research. Recently, universal quantum logic-gate sets—the …

We present several entanglement criteria in terms of the quantum Fisher information that
help to relate various forms of multipartite entanglement to the sensitivity of phase …