Coherent manipulation of atomic qubits in optical micropotentials

Abstract

We experimentally demonstrate the coherent manipulation of atomic states in far-detuned dipole traps and registers of dipole traps based on two-dimensional arrays of microlenses. By applying Rabi, Ramsey, and spin-echo techniques, we systematically investigate the dephasing mechanisms and determine the coherence time. Simultaneous Ramsey measurements in up to 16 dipole traps are performed and proves the scalability of our approach. This represents an important step in the application of scalable registers of atomic qubits for quantum information processing. In addition, this system can serve as the basis for novel atomic clocks making use of the parallel operation of a large number of individual clocks each remaining separately addressable.

to be published in Appl. Phys. B

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• Experimental demonstration of single-site addressability in a two-dimensional optical lattice
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• Quantum computing implementations with neutral particles
• Independent individual addressing of multiple neutral atom qubits with a MEMS beam steering system
• Scalable Architecture for Quantum Information Processing with Atoms in Optical Micro-Structures
• Atomtronics with holes: Coherent transport of an empty site in a triple well potential
• Reconfigurable, site-selective manipulation of atomic quantum systems in two-dimensional arrays of dipole traps
• Coherent Transport of Atomic Quantum States in a Scalable Shift Register
• Fast transport, atom sample splitting, and single-atom qubit supply in two-dimensional arrays of optical microtraps
• Speeding up the spatial adiabatic passage of matter waves in optical microtraps by optimal control
• Filtering of matter wave vibrational states via spatial adiabatic passage
• Echo Spectroscopy of Atomic Dynamics in a Gaussian Trap via Phase Imprints
• Manipulating mesoscopic multipartite entanglement with atom-light interfaces
• Mesoscopic entanglement of noninteracting qubits using collective spontaneous emission
• Cavity-enabled real-time observation of individual atomic collisions
• A quantum register using collective excitations in a Bose-Einstein condensate