Trap for ions or neutral atoms

Abstract

A trap for ions or neutral atoms is specified, comprising:- an optical system (1) for collecting a fluorescence emission (2) from trapped ions or trapped neutral atoms (3), wherein- the optical system (1) comprises a substrate (4) with a nanostructured surface (5), and- the nanostructured surface (5) is configured to focus and / or redirect the incident fluorescence emission (2).

Claims

[1] A trap for ions or neutral atoms, comprising: - an optical system (1) for collecting a fluorescence emission (2) from trapped ions or trapped neutral atoms (3), wherein - the optical system (1) comprises a substrate (4) with a nanostructured surface (5), and - the nanostructured surface (5) is designed to focus and / or redirect the incident fluorescence emission (2). [2] The trap for ions or neutral atoms according to the preceding claim, wherein the optical system (1) is further configured to focus and / or direct incident light onto one or more trapped ions or trapped neutral atoms, and wherein the nanostructured surface (5) is configured to focus and / or direct the incident light onto the one or more trapped ions or trapped neutral atoms. [3] The trap for ions or neutral atoms according to any one of the preceding claims, wherein the nanostructured surface (5) is configured as a reflecting mirror for the incident fluorescence emission (2). [4] The trap for ions or neutral atoms according to any one of the preceding claims, wherein the fluorescence emission (2) is in the UV spectral range. [5] The trap for ions or neutral atoms according to any one of the preceding claims, wherein the nanostructured surface (5) comprises niobium pentoxide and / or hafnium dioxide. [6] The trap for ions or neutral atoms according to any one of the preceding claims, wherein the nanostructured surface (5) comprises a plurality of nanopillars (6). [7] The trap for ions or neutral atoms according to the preceding claim, wherein: - a height (H) and / or a diameter (D) of each nanocolumn (6) is less than or equal to a wavelength of the fluorescence emission (2), and - a center-to-center distance (A) between adjacent nanopillars (6) is less than or equal to the wavelength of the fluorescence emission (2). [8] The trap for ions or neutral atoms according to any one of claims 6 or 7, wherein: - the plurality of nanopillars (6) are arranged in the form of an array, - the array comprises a plurality of unit cells (7) arranged in a two-dimensional pattern, and - a size, a shape and / or an arrangement of the nanopillars (6) is different in different unit cells (7). [9] The trap for ions or neutral atoms according to any one of the preceding claims, wherein the nanostructured surface (5) is configured as an off-axis focusing mirror for the incident fluorescence emission (2). [10] The trap for ions or neutral atoms according to any one of the preceding claims, wherein: - the substrate (4) has a first part (41) and a second part (42) which is separated from the first part (41), - the nanostructured surface (5) of the first part (41) redirects the incident fluorescence emission (2) onto the nanostructured surface (5) of the second part (42), and - the nanostructured surface (5) of the second part (42) redirects the fluorescence emission (2) further to a detector (10). [11] The trap for ions or neutral atoms according to the preceding claim, wherein the first part (41) and the second part (42) form a Schwarzschild objective. [12] The trap for ions or neutral atoms according to any one of the preceding claims, further comprising a nano-positioner (8), wherein the substrate (4) is arranged on the nano-positioner (8). [13] The trap for ions or neutral atoms according to any one of the preceding claims, wherein the substrate (4) is integrated with a microchip ion trap (9).

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