caa a22 4500 445886307 CHVBK 20180317145600.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s11128-011-0302-6 doi (NATIONALLICENCE)springer-10.1007/s11128-011-0302-6 Controlling quantum information processing in hybrid systems on chips [Elektronische Daten] [Guy Bensky, Robert Amsüss, Johannes Majer, David Petrosyan, Jörg Schmiedmayer, Gershon Kurizki] We investigate quantum information processing, transfer and storage in hybrid systems comprised of diverse blocks integrated on chips. Strong coupling between superconducting (SC) qubits and ensembles of ultracold atoms or NV-center spins is mediated by a microwave transmission-line resonator that interacts near-resonantly with the atoms or spins. Such hybrid devices allow us to benefit from the advantages of each block and compensate for their disadvantages. Specifically, the SC qubits can rapidly implement quantum logic gates, but are "noisy” (prone to decoherence), while collective states of the atomic or spin ensemble are "quiet”(protected from decoherence) and thus can be employed for storage of quantum information. To improve the overall performance (fidelity) of such devices we discuss dynamical control to optimize quantum state-transfer from a "noisy” qubit to the "quiet” storage ensemble. We propose to maximize the fidelity of transfer and storage in a spectrally inhomogeneous spin ensemble, by pre-selecting the optimal spectral portion of the ensemble. Significant improvements of the overall fidelity of hybrid devices are expected under realistic conditions. Experimental progress towards the realization of these schemes is discussed. The Author(s), 2011 Quantum information nationallicence Hybrid quantum systems nationallicence Atom chip nationallicence Bensky Guy Department of Chemical Physics, Weizmann Institute of Science, 76100, Rehovot, Israel aut Amsüss Robert Vienna Center for Quantum Science and Technology (VCQ), Atominstitut, TU-Wien, Stadionalle 2, 1020, Vienna, Austria aut Majer Johannes Vienna Center for Quantum Science and Technology (VCQ), Atominstitut, TU-Wien, Stadionalle 2, 1020, Vienna, Austria aut Petrosyan David Institute of Electronic Structure and Laser, FORTH, 71110, Heraklion, Crete, Greece aut Schmiedmayer Jörg Vienna Center for Quantum Science and Technology (VCQ), Atominstitut, TU-Wien, Stadionalle 2, 1020, Vienna, Austria aut Kurizki Gershon Department of Chemical Physics, Weizmann Institute of Science, 76100, Rehovot, Israel aut Quantum Information Processing Springer US; http://www.springer-ny.com 10/6(2011-12-01), 1037-1060 1570-0755 10:6<1037 2011 10 11128 https://doi.org/10.1007/s11128-011-0302-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11128-011-0302-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bensky Guy Department of Chemical Physics, Weizmann Institute of Science, 76100, Rehovot, Israel aut NATIONALLICENCE 700 1- Amsüss Robert Vienna Center for Quantum Science and Technology (VCQ), Atominstitut, TU-Wien, Stadionalle 2, 1020, Vienna, Austria aut NATIONALLICENCE 700 1- Majer Johannes Vienna Center for Quantum Science and Technology (VCQ), Atominstitut, TU-Wien, Stadionalle 2, 1020, Vienna, Austria aut NATIONALLICENCE 700 1- Petrosyan David Institute of Electronic Structure and Laser, FORTH, 71110, Heraklion, Crete, Greece aut NATIONALLICENCE 700 1- Schmiedmayer Jörg Vienna Center for Quantum Science and Technology (VCQ), Atominstitut, TU-Wien, Stadionalle 2, 1020, Vienna, Austria aut NATIONALLICENCE 700 1- Kurizki Gershon Department of Chemical Physics, Weizmann Institute of Science, 76100, Rehovot, Israel aut NATIONALLICENCE 773 0- Quantum Information Processing Springer US; http://www.springer-ny.com 10/6(2011-12-01), 1037-1060 1570-0755 10:6<1037 2011 10 11128 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer