Berlin 2012 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 5: Transport: Quantum Coherence and Quantum Information Systems 1 (jointly with MA and HL)

TT 5.9: Talk

Monday, March 26, 2012, 11:45–12:00, BH 243

Towards photon quantum gates in circuit qed — •Lukas Neumeier, Martin Leib, and Michael Hartmann — TU München, Munich,Germany

Quantum information processing can be decomposed into quantum channels and quantum gates. Photons are well suited for transferring information whereas stationary qubits offer better perspectives for implementing gates. Traditionally in circuit qed quantum gates are therefore realized by interactions between stationary superconducting qubits. As opposed to this we analyze a circuit qed setup where itinerant microwave photons, confined to two one dimensional transmission-lines, interact at a localized superconducting qubit. We provide results for reflection and transmission spectra and photon measurement probabilities for both waveguides which depend on the incoming single or two-photon pulses.