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Physical review. B./Physical review. B

Metasurfaces for de Broglie waves

Wanyue Xiao, Cheng‐ping Huang

Published Dec 23, 2021• 3 citations
Publisher

Abstract

Metasurfaces have been employed to control the electromagnetic and acoustic waves. We suggest that the quantum particles can be manipulated with a de Broglie wave metasurface. The effect was achieved by using the dielectric films milled with subwavelength slits, which behave as the quantum meta-atoms with an effective potential energy. The calculations show that \ensuremath{\sim}100% transmission of de Broglie waves may appear in certain conditions. Moreover, by tuning the effective potential of the slits, a full 360\ifmmode^\circ\else\textdegree\fi{} coverage of transmission phase is attainable. With a carefully designed annular metasurface, highly efficient and subwavelength focusing of de Broglie waves has been theoretically demonstrated. Our work may render a way to manipulate quantum particles.

DOI
10.1103/physrevb.104.245429

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Metasurfaces have been employed to control the electromagnetic and acoustic waves. We suggest that the quantum particles can be manipulated with a de Broglie wave metasurface. The effect was achieved by using the dielectric films milled with subwavelength slits, which behave as the quantum meta-atoms with an effective potential energy. The calculations show that \ensuremath{\sim}100% transmission of de Broglie waves may appear in certain conditions. Moreover, by tuning the effective potential of the slits, a full 360\ifmmode^\circ\else\textdegree\fi{} coverage of transmission phase is attainable. With a carefully designed annular metasurface, highly efficient and subwavelength focusing of de Broglie waves has been theoretically demonstrated. Our work may render a way to manipulate quantum particles.
Optical metasurfaces, i.e., subwavelength planar nanostructures, have attracted increasing attention due to their unprecedented capabilities of molding classical light and revolutionized conventional optics by replacing bulky optical components with ultrathin, lightweight, and ultracompact meta-optics. In addition to controlling classical light, meta-optics demonstrate the potential to efficiently manipulate nonclassical light and start to enter the realm of quantum photonics. Here, we briefly overview recent advances in quantum meta-optics for generation and manipulation of nonclassical light, highlighting innovative approaches, and discuss future opportunities in this burgeoning area, ranging from fundamental research to practical applications.
Recently, it has been observed that transmission of light through subwavelength apertures, which is usually negligible, can be significantly enhanced when surface plasmons are resonantly excited. Here we introduce the idea that similar effects can be expected for cold atoms in structures supporting surface matter waves. We show that surface matter waves are possible in properly designed structures, and then we theoretically demonstrate 100% transmission of rubidium atoms through an array of slits much narrower than the de Broglie wavelength of the atoms. Our results open up the possibility of using surface matter waves to control the flow of neutral atoms.
Quantum metaphotonics has emerged as a cutting-edge subfield of meta-optics employing subwavelength resonators and their planar structures, such as metasurfaces, to generate, manipulate, and detect quantum states of light. It holds a great potential for the miniaturization of current bulky quantum optical elements by developing a design of on-chip quantum systems for various applications of quantum technologies. Over the past few years, this field has witnessed a surge of intriguing theoretical ideas, groundbreaking experiments, and novel application proposals. This Perspective aims to summarize the most recent advancements and also provides a perspective on the further progress in this rapidly developing field of research.
Abstract Among the most prominent effects resulting from nonlinear light–matter interaction is the generation of correlated and entangled photons through various processes, notably via spontaneous parametric down‐conversion or spontaneous four‐wave mixing. Such nonlinear optical processes benefit from the concentration of electromagnetic fields in small volumes. Dielectric nanoresonators and their 2D layouts—metasurfaces—provide efficient ways to control light in subwavelength volumes enabling the enhancement of nonlinear light–matter interaction and the generation of entangled photons. Nanoresonators and metasurfaces offer a radical miniaturization of quantum light sources allowing better scalability, which opens a pathway toward arrangements of photon sources in complex subwavelength configurations for advanced photon state control. In this work, the recent progress in this emergent area of research is reviewed.
In recent years, dielectric and metallic nanoscale metasurfaces are attracting growing attention and are being used for variety of applications. Resulting from the ability to introduce abrupt changes in optical properties at nanoscale dimensions, metasurfaces enable unprecedented control over light's different degrees of freedom, in an essentially two-dimensional configuration. Yet, the dynamic control over metasurface properties still remains one of the ultimate goals of this field. Here, we demonstrate the optical resonant interaction between a form birefringent dielectric metasurface made of silicon and alkali atomic vapor to control and effectively tune the optical transmission pattern initially generated by the nanoscale dielectric metasurface. By doing so, we present a controllable metasurface system, the output of which may be altered by applying magnetic fields, changing input polarization, or shifting the optical frequency. Furthermore, we also demonstrate the nonlinear behavior of our system taking advantage of the saturation effect of atomic transition. The demonstrated approach paves the way for using metasurfaces in applications where dynamic tunability of the metasurface is in need, for example, for scanning systems, tunable focusing, real time displays, and more.