The resolution of conventional optical elements and systems has long been perceived to
satisfy the classic Rayleigh criterion. Paramount efforts have been made to develop different …

Superoscillations are band-limited functions with the counterintuitive property that they can
vary arbitrarily faster than their fastest Fourier component, over arbitrarily long intervals …

It is now well-appreciated that a bandlimited wave can possess oscillations much more
rapidly than those predicted by the bandlimit itself, in a phenomenon known as …

The Schrödinger equation is a fundamental equation to describe the wave function of a
quantum-mechanical system. The similar forms between the Schrödinger equation and the …

Optical super-resolution diffractive metalenses have been promising candidates for realizing
optical imaging and a microscope beyond the Abbe diffraction limit. An achromatic super …

Optical superoscillation refers to an intriguing phenomenon of a wave packet that can
oscillate locally faster than its highest Fourier component, which potentially produces an …

This work investigates the generation of arbitrary electromagnetic waveforms inside a
geometrical area enclosed by an active metasurface. We introduce the Huygens' box, where …

Superoscillations are making a growing impact on an ever-increasing number of real-world
applications, as early theoretical analysis has evolved into wide experimental realisation …

We derive upper bounds to free-space concentration of electromagnetic waves, map** out
the limits to the maximal intensity for any spot size and optical-beam-sha** device. For …

Diffraction imaging problem, ie recovery of a high-resolution or high-quality image from the
intensity diffraction pattern, arises in many science and engineering fields. Recent efforts to …