Abstract: A method for quantum computing using neutral atoms in an array of optical traps, wherein a first internal state serves as qubit ground state |o>, and a second internal state serves as qubit excited state |1>, includes performing a local single-qubit gate operation comprising: locally and selectively illuminating a qubit prepared in a superposition state |s> of qubit ground state |0> and qubit excited state |1> with a qubit addressing laser at a first qubit addressing laser frequency to cause a differential Stark shift for the qubit ground state |0> and the qubit excited state |1>. The method also includes performing a local two-qubit gate operation comprising: locally and selectively illuminating a pair of qubits prepared in the qubit ground state |0> with the qubit addressing laser at a second qubit addressing laser frequency for coupling the pair of qubits to a Rydberg state |r>.

Abstract: A method for quantum computing using neutral atoms in an array of optical traps, wherein a first internal state serves as qubit ground state |o>, and a second internal state serves as qubit excited state |1>, includes performing a local single-qubit gate operation comprising: locally and selectively illuminating a qubit prepared in a superposition state |s> of qubit ground state |0> and qubit excited state |1> with a qubit addressing laser at a first qubit addressing laser frequency to cause a differential Stark shift for the qubit ground state |0> and the qubit excited state |1>. The method also includes performing a local two-qubit gate operation comprising: locally and selectively illuminating a pair of qubits prepared in the qubit ground state |0> with the qubit addressing laser at a second qubit addressing laser frequency for coupling the pair of qubits to a Rydberg state |r>.

Abstract: A method of creating an optical atom trap comprises the steps of providing an incoherent light field with a light source apparatus, by creating a pulsed laser light beam of laser pulses with a repetition rate equal to or above 100 kHz and a relative spectral width of 10?4 to 10?2, coupling the pulsed laser light beam to an input end of a multimode waveguide device and guiding the pulsed laser light beam by total internal reflection to an output end of the multimode waveguide device, wherein the incoherent light field is provided at the output end, and creating the optical atom trap for trapping atoms in an atom trap chamber device by coupling the incoherent light field to the atom trap chamber device, wherein the optical atom trap has a trap frequency and the atoms have multiple resonance frequencies, and the laser pulses for providing the incoherent light field are created such that the repetition rate is above the trap frequency and the spectral width is below a spectral range between the resonance frequenc

Abstract: An optical resonator device (100) with crossed cavities, in particular being configured for optically trapping atoms, comprises a first linear optical resonator (10) extending between first resonator mirrors (11A, 11B) along a first resonator light path (12) and supporting a first resonator mode, a second linear optical resonator (20) extending between second resonator mirrors (21A, 21B) along a second resonator light path (22) and supporting a second resonator mode, wherein the first and second resonator light paths (12, 22) span a main resonator plane, and a carrier device carrying the first and second resonator mirrors (11A, 11B, 21A, 21B), wherein the first and second resonator mirrors (11, 21) are arranged such that the first and second resonator modes cross each other for providing an optical lattice trap (1) in the main resonator plane.

Abstract: A method of creating an optical atom trap comprises the steps of providing an incoherent light field with a light source apparatus, by creating a pulsed laser light beam of laser pulses with a repetition rate equal to or above 100 kHz and a relative spectral width of 10?4 to 10?2, coupling the pulsed laser light beam to an input end of a multimode waveguide device and guiding the pulsed laser light beam by total internal reflection to an output end of the multimode waveguide device, wherein the incoherent light field is provided at the output end, and creating the optical atom trap for trapping atoms in an atom trap chamber device by coupling the incoherent light field to the atom trap chamber device, wherein the optical atom trap has a trap frequency and the atoms have multiple resonance frequencies, and the laser pulses for providing the incoherent light field are created such that the repetition rate is above the trap frequency and the spectral width is below a spectral range between the resonance frequenc

Abstract: An optical resonator device (100) with crossed cavities, in particular being configured for optically trapping atoms, comprises a first linear optical resonator (10) extending between first resonator mirrors (11A, 11B) along a first resonator light path (12) and supporting a first resonator mode, a second linear optical resonator (20) extending between second resonator mirrors (21A, 21B) along a second resonator light path (22) and supporting a second resonator mode, wherein the first and second resonator light paths (12, 22) span a main resonator plane, and a carrier device carrying the first and second resonator mirrors (11A, 11B, 21A, 21B), wherein the first and second resonator mirrors (11, 21) are arranged such that the first and second resonator modes cross each other for providing an optical lattice trap (1) in the main resonator plane.

Abstract: A device for generating and manpulating coherent matter waves contains a magnetic trap being adapted to form a magnetic trapping potential for gas atoms, said magnetic trap comprising a plurality of trap coils being connected with a current supply device and including two quadrupole coils and one Ioffe coil, wherein the trap coils are arranged in such a relative position that a common trap is formed, said common trap having a quadrupole trap shape with one trap minimum if the quadrupole coils are in an operation condition and the Ioffe coil is in a currentless condition or two trap minima or a Ioffe trap shape if all the quadrupole and Ioffe coils are in an operation condition and a shielding device protecting the magnetic trap against external magnetic fields. A method of continuous extracting matter waves from the trap is described.