Abstract: In an embodiment a quantum computing arrangement includes a permanent magnet arrangement and a space within the permanent magnet arrangement configured for at least two trapped quantum particles arranged along a first axis, wherein the permanent magnet arrangement includes a plurality of segments, wherein each segment has a magnetisation direction, wherein the magnetisation directions of at least four segments are different to one another thereby establishing a magnetic field with magnitudes being different from one another for different positions on the first axis, and wherein a change of the magnitudes is at least 0.5 T/m.

Abstract: In an embodiment a quantum computing arrangement includes a permanent magnet arrangement configured for establishing a magnetic field with magnitudes different from one another for different positions on a first axis, a space for at least two trapped quantum particles arranged along the first axis and a soft magnetic material surrounded by the permanent magnet arrangement, the soft magnetic material configured for enhancing the magnetic field, wherein the permanent magnet arrangement comprises a plurality of segments, wherein each segment has a magnetisation direction, and wherein the segments surround the space in form of a ring, or wherein the segments surround the space in form of a contour of a polygon.

Abstract: In an embodiment a quantum computing arrangement includes a permanent magnet arrangement, a substrate, wherein the quantum computing arrangement is configured to realize a planar Paul trap configured for trapping at least one ion crystal having several ions lined up along a predefined line, and components, constituting electrodes of the planar Paul trap configured for producing an electrical trapping potential, arranged on a top side of the substrate, wherein the predefined line is located above the top side, wherein the permanent magnet arrangement is configured to establish a magnetic field with a magnitude of the magnetic field changing along the predefined line, wherein the permanent magnet arrangement comprises a plurality of permanently magnetized segments, wherein each segment has a magnetization direction, and wherein the segments are arranged in a Halbach arrangement.

Abstract: In an embodiment a quantum computing arrangement includes a permanent magnet arrangement configured to establish a magnetic field with magnitudes being different from one another for different positions on a first axis, and an ion trap having a first region and a second region arranged above one another, wherein the ion trap has at least one section being part of the first region and the second region configured for hosting at least one ion crystal, wherein the first and second regions are stacked above one another in a vertical direction, wherein the vertical direction is perpendicular to a main extension plane of the ion trap, and wherein the at least one ion crystal includes a plurality of trapped ions arranged along the first axis.