Photons have been a flagship system for studying quantum mechanics, advancing quantum
information science, and developing quantum technologies. Quantum entanglement …

Entanglement is an important resource for quantum technologies. There are many ways
quantum systems can be entangled, ranging from the two-qubit case to entanglement in …

Entangled-photon sources with simultaneously near-unity heralding efficiency and
indistinguishability are the fundamental elements for scalable photonic quantum …

Scalable photonic quantum technologies require on-demand single-photon sources with
simultaneously high levels of purity, indistinguishability, and efficiency. These key features …

ABSTRACT Spontaneous Parametric Down-Conversion (SPDC), also known as parametric
fluorescence, parametric noise, parametric scattering and all various combinations of the …

Environmental noise and disorder play critical roles in quantum particle and wave transport
in complex media, including solid-state and biological systems. While separately both effects …

Elucidating the orbital level origin of second harmonic generation (SHG) in materials and
identifying the local contributions is a long-standing challenge. We report a first principles …

Forming the backbone of quantum technologies today, entanglement, has been
demonstrated in physical systems as diverse as photons, ions and superconducting circuits …

Photons with a twisted phase front carry a quantized amount of orbital angular momentum
(OAM) and have become important in various fields of optics, such as quantum and classical …

Quantum computers are unnecessary for exponentially efficient computation or simulation if
the Extended Church-Turing thesis is correct. The thesis would be strongly contradicted by …