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Regensburg 2016 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 5: Transport: Quantum Coherence and Quantum Information Systems - Experiment
(Joint session of HL, MA and TT organized by TT)

TT 5.4: Talk

Monday, March 7, 2016, 10:30–10:45, H22

Transmon qubits enter circuit nano-electromechanics — •Daniel Schwienbacher1,2, Matthias Pernpeintner1,2,3, Friedrich Wulschner1,2, Philip Schmidt1,2,3, Frank Deppe1,2,3, Achim Marx1, Rudolf Gross1,2,3, and Hans Huebl1,2,31Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany — 2Physik-Department, TU München, 85748 Garching, Germany — 3Nanosystems Initiative Munich (NIM), 80799 München, Germany

The field of cavity nano-electromechanics combines nano-scale mechanical elements with microwave circuits for the investigation of the light-matter interaction on a quantum level. In this context ground state cooling, electromechanically induced transparency effects, as wells as state transfer between the mechanical and photonic modes have been demonstrated. Recently, Abdi et al.[1] have proposed the integration of a nanomechanical beam into the capacitor of a transmon qubit, which is in turn coupled to a microwave resonator and predicted enhanced electro-mechanical coupling rates as well as the preparation of mechanical Fock states and the generation of three-partite entanglement. Here, we present an experimental study concerning the integration of a nanomechanical beam, a transmon qubit, and a microwave resonator on a single chip. We will discuss fabricational aspects and first spectroscopy data of the device.

We thankfully acknowledge financial support by the DFG via the collaborative research center SFB 631.
Mehdi Abdi et al., PRL 114, 173602 (2015)

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