Dresden 2009 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 35: Postersession Transport: Nanoelectronics, Quantum Coherence and Quantum Information, Fluctuations and Noise

TT 35.32: Poster

Wednesday, March 25, 2009, 14:00–18:00, P1A

Engineering Quantum States of Light in Coplanar Cavities — •Michael Wulf, Ralf Dolata, and Alexander B. Zorin — Physikalisch Technische Bundesanstalt

Recently it has become possible to detect single photons in the microwave-regime using tools developed by the Quantum Information community. We propose here an experiment to directly study the coherence times of confined photons. For this purpose we use Single-Cooper-Pair boxes as photon detectors for two coupled superconducting coplanar cavities, and show how a photon-coherence time much longer than the rather limited coherence-times of charge boxes operating in the qubit regime can be observed.