Communication security has to evolve to a higher plane in the face of the threat from the
massive computing power of the emerging quantum computers. Quantum secure direct …

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 …

Single-pixel cameras have recently emerged as promising alternatives to multi-pixel sensors
due to reduced costs and superior durability, which are particularly attractive for mid-infrared …

Frequency upconversion technique, where the infrared signal is nonlinearly translated into
the visible band to leverage the silicon sensors, offers a promising alternation for the mid …

The efficient transport and engineering of photonic orbital angular momentum (OAM) lie at
the heart of various related classical and quantum applications. Here, by leveraging the …

In this paper, ultra-thin metalenses are proposed to generate converging and non-diffractive
vortex beam carrying orbital angular momentum (OAM) in microwave region. Phase …

Ultrasensitive spectroscopy is an essential component in mid-infrared (MIR) technology.
However, the drawbacks of MIR detectors pose challenges to robust MIR spectroscopy at …

Photons that have a helical phase front, that is, twisted photons, can carry a discrete, in
principle, unlimited, but quantized amount of orbital angular momentum (OAM). Hence …

Vortex electromagnetic wave carrying orbital angular momentum (OAM) is expected to break
through the shortage of spectrum resource because of its multiple independent modes …

High‐dimensional frequency converter provides an enticing promise for establishing
frequency interfaces to connect various physical systems toward the next generation of high …