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] …

Lasers and LEDs have a statistical distribution in the number of photons emitted within a
given time interval. Applications exploiting the quantum properties of light require sources …

Tomographic analysis demonstrates that the polarization state of pairs of photons emitted
from a biexciton decay cascade becomes entangled when spectral filtering is applied. The …

Entangled photon pairs are an important resource in quantum optics, and are essential for
quantum information applications such as quantum key distribution, and controlled quantum …

We have demonstrated efficient production of triggered single photons by coupling a single
semiconductor quantum dot to a three-dimensionally confined optical mode in a micropost …

More than 80 years have passed since the first publication on entangled quantum states.
Over this period, the concept of spookily interacting quantum states became an emerging …

The prospect of using the quantum nature of light for secure communication keeps spurring
the search and investigation of suitable sources of entangled photons. A single …

We report a proof-of-principle demonstration of a probabilistic controlled-NOT gate for single
photons. Single-photon control and target qubits were mixed with a single ancilla photon in …

The lack of structural symmetry which usually characterizes semiconductor quantum dots
lifts the energetic degeneracy of the bright excitonic states and hampers severely their use …

In typical epitaxial quantum dots (QDs) the ideally degenerate optical excitons are energy
split, preventing the formation of two-photon entanglement in a biexciton decay. We use an …