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TT: Fachverband Tiefe Temperaturen

TT 34: TR: Quantum Coherence and Quantum Information Systems 2 (jointly with MA and HL)

TT 34.3: Vortrag

Mittwoch, 16. März 2011, 14:30–14:45, HSZ 03

Generation of non-classical states for microwave photons in networks of circuit cavities — •Martin Leib and Michael J. Hartmann — TU München,Munich,Germany

State of the art fabrication of superconducting microwave resonators coupled to Josephson qubits provides us with an architecture where strong coherent interaction of individual microwave photons with individual two-level systems (qubits) has been realised with exceptional control over both, photons and qubits. Here we consider a network of multiple microwave resonators each equipped with a Josephson qubit and analyse the quantum states of the output photons at several ports of the network. With time independent [1] or sequential driving one can generate highly non-classical states of the microwave field in specific network nodes. We investigate the generation, propagation and dissipation of these states along branches of the network. As a signature for the non-classical nature of the microwave field we quantify the generation of entanglement between various output ports of these networks of circuit QED systems.
M. Leib and M.J. Hartmann Bose-Hubbard dynamics in a chain of circuit QED cavities New Journal of Physics Vol. 12 Nr. 9 pp. 093031