Entangled photon sources are desirable and key elements for photonic quantum information
processing. The spontaneous parametric down‐conversion (SPDC) process is a convenient …

The ability to determine the joint spectral properties of photon pairs produced by the
processes of spontaneous parametric downconversion (SPDC) and spontaneous four-wave …

Entangled photon pairs are a critical resource in quantum communication protocols ranging
from quantum key distribution to teleportation. The current workhorse technique for …

Single-photon counters are single-pixel binary devices that click upon the absorption of a
photon but obscure its spectral information, whereas resolving the color of detected photons …

Time correlated photon pairs are used to produce heralded single photon states for quantum
integrated circuits. These states are generated by photon sources, which are called …

Quantum information processing holds great promise for communicating and computing
data efficiently. However, scaling current photonic implementation approaches to larger …

Interference, which refers to the phenomenon associated with the superposition of waves,
has played a crucial role in the advancement of physics and finds a wide range of …

Excitation with entangled photon pairs may lead to an increase in the efficiency of two-
photon absorption at low photon flux. The corresponding process, entangled two-photon …

Strongly driven nonlinear optical processes such as spontaneous parametric down-
conversion and spontaneous four-wave mixing can produce multiphoton nonclassical …

Spectrally unentangled biphotons with high single-spatiotemporal-mode purity are highly
desirable for many quantum information processing tasks. We generate biphotons with an …