Abstract: The present disclosure provides electrode portions for generating electric and/or magnetic fields for trapping ions in a trapping zone, a three-dimensional (3D) ion trap including one or more of such electrode portions, systems for trapping ions with such a 3D ion trap, as well as methods for manufacturing such electrode portions. An electrode portions includes an electrode body made of an electrically insulating substrate and elongated in a first direction towards the ion trapping zone, a peak electrode located on an extremity of the electrode body closest to the trapping zone or a side electrode located laterally relative to the extremity, and a connection connected to the peak electrode and leading from the peak electrode through said electrode body away from the trapping zone.

Abstract: The present disclosure provides entangling two or more trapped ions wherein a common motional mode of the ions is used by conditionally, depending on an internal state of the ions, exciting and/or de-exciting the common motional mode. The common motional mode is conditionally excited/de-excited by inducing, on each of the two or more trapped ions respective perpendicular state-dependent forces (SDFs) that are modulated in accordance with the frequency of the motional mode. Each of the perpendicular SDFs can be induced by a laser beam and acts perpendicular to the propagation direction of the laser beam that induces it. The SDFs may be modulated by modulating an intensity and/or an amplitude of the electromagnetic field of the first laser beam, changing a position and/or a direction of the first laser beam relative to the first trapped ion, and/or including light of different frequencies into the laser beam.

Abstract: The present disclosure relates to a module of a trap for charged particles (e.g., ions), to manufacturing such module, to a trap including the module and a manufacturing of such modular trap. The module includes a monolithic body made of a non-conductive substrate and an electrode arranged on a portion of a surface of the monolithic body. A part of the monolithic body forms a spring element. An electrically conductive area is arranged on and covers a portion of a surface of the spring element and is conductively connected with the electrode. The spring element is adapted to compress upon pressure applied on the electrically conductive area.

Abstract: The present disclosure provides electrode portions for generating electric and/or magnetic fields for trapping ions in a trapping zone, a three-dimensional (3D) ion trap including one or more of such electrode portions, systems for trapping ions with such a 3D ion trap, as well as methods for manufacturing such electrode portions. An electrode portions includes an electrode body made of an electrically insulating substrate and elongated in a first direction towards the ion trapping zone, a peak electrode located on an extremity of the electrode body closest to the trapping zone or a side electrode located laterally relative to the extremity, and a connection connected to the peak electrode and leading from the peak electrode through said electrode body away from the trapping zone.

Abstract: Some embodiments in the present disclosure relate to an apparatus and methods to excite a trapped ion. A first laser beam and a second laser beam pass through at least one common lens of an objective. The two laser beams are focused by said objective at the position of the trapped ion. A moving standing wave is generated at the position of the trapped ion, which induces a force on the trapped ion. Two ions may be entangled by generating such moving standing wave at the respective positions of both of said ions.