Quantum key distribution (QKD) is a family of protocols for growing a private encryption key
between two parties. Despite much progress, all ground-based QKD approaches have a …

Quantum imaging is a multifaceted field of research that promises highly efficient imaging in
extreme spectral ranges as well as ultralow‐light microscopy. Since the first proof‐of …

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

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

We present an efficient method to extract the amount of true randomness that can be
obtained by a quantum random number generator (QRNG). By repeating the measurements …

Hyperentanglement, the simultaneous entanglement in more than one degree of freedom
(DOF), plays an important role in quantum communication and quantum information …

We present a programme for establishing the space worthiness of highly-miniaturised,
polarisation-entangled, photon pair sources using CubeSat nanosatellites. Once …

We demonstrate optical coherence tomography based on an SU (1, 1) nonlinear
interferometer with high-gain parametric downconversion. For imaging and sensing …

Sources of entanglement are an enabling resource in quantum technology, and pushing the
limits of generation rate and quality of entanglement is a necessary prerequisite towards …

We demonstrate pulsed polarization-entangled photons generated from a periodically poled
KTiOPO_4 (PPKTP) crystal in a Sagnac interferometer configuration at telecom wavelength …