Dresden 2006 – scientific programme
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TT: Tiefe Temperaturen
TT 32: Transport: Quantum Coherence and Quantum Information Systems - Part 2
TT 32.4: Talk
Thursday, March 30, 2006, 14:45–15:00, HSZ 304
On-chip Quantum Information Processing in Circuit QED — •Henning Christ1, Matteo Mariantoni2, and Enrique Solano1,3 — 1Max-Planck Institute for Quantum Optics, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany — 2Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, Walther-Meissner-Strasse 8, D-85748 Garching, Germany — 3Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú, Apartado 1761, Lima, Peru
We consider an on-chip linear array of flux-based qubits inside individual quasi-1D superconductive resonators and introduce, in the context of quantum information theory, different possibilities of realizing quantum computation with suitably designed long-lived qubits. In particular, we present in a comparative manner the advantages and disadvantages of establishing on-chip quantum communication protocols via single photon exchange or via novel continuous-variable schemes. For the purpose, the latter turn out to be the most promising avenue given that single-photon detectors are still unavailable in the microwave domain. Finally, we propose a deterministic single-qubit teleportation protocol based on unitary generation of qubit-cavity Schrödinger cats, where no single-photon detector is needed.