Abstract: The invention relates to a quantum computing device comprising at least one atom, wherein the at least one atom has a first electronic state, a second electronic state, and a third electronic state, wherein the third electronic state is a Rydberg electronic state, and an optical capture device configured to emit electromagnetic radiation to capture one or more of the at least one atom, wherein the optical capture device is configured to emit the electromagnetic radiation at a capture wavelength, wherein the first electronic state, the second electronic state, and the Rydberg electronic state have a substantially equal AC polarizability for the capture wavelength. The invention further relates to a use of a quantum computing device and a method for quantum computing.

Abstract: The present invention relates to a device (10) for generating optical tweezers comprising a laser beam source (11) for generating a laser beam (12) and at least one acousto-optic deflector (13) for generating an array (15) of partial beams (14) of the laser beam (12), wherein the array (15) comprises rows (15c). The device (10) further comprises a stepped mirror unit (16) comprising at least a first stepped mirror (25) for reducing a row distance (15d) of the partial beams (14) of the array (15), wherein the first stepped mirror (25) comprises mirrors (30), a stepped distance (25a) between adjacent mirrors (30) and a stepped height (25b).

Abstract: A cell (110) for carrying out quantum optical measurements on at least one atom cloud is proposed. The cell (110) comprises a control unit (114) for controlling electric fields at the location (112) of the atom cloud. The control unit (114) comprises: at least one housing (116) having at least one interior (120) for receiving the atom cloud and having at least one opening (122) for introducing the atoms of the atom cloud into the interior (120); and at least two electrodes (118), wherein the electrodes (118), independently of one another, are able to be subjected to electrical potentials and are configured to influence at least one electric field in the interior (120), wherein the electrodes (118) are mechanically connected to the housing (116). At least one of the electrodes (118) is at least partly formed by at least one optical window (130) through which at least one light beam (132) for interaction with the atom cloud is able to be radiated into the interior (120).

Abstract: An interferometer has an angled beam entry to a multimode waveguide that can be formed of parallel plane mirrors. The beam is input at a specified primary angle &agr; so as to generate interference between populated modes. The primary angle preferably satisfies the condition &agr;>arcsin(&lgr;/d), where d is a width of the waveguide and &lgr; is a wavelength of the primary beam. The interferometer can provide a small distance between transmission fringes and is useful for precise position measurements. The fringe positions are determined by wavelength, which permits use in spectrum analysis and the like. The waveguide can include an active optical material and be controlled, for example for switching between output channels.

Abstract: The present invention relates to an interferometer comprising: