Acoustics for Nanosciences – Quantum optomechanics

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  • Permanent Member: Daniel Garcia Sanchez
  • Chercheur invité : Bernard Perrin

Quantum optomechanics and electromechanics is a fast growing field with promising applications in quantum information. Recently non-classical mechanical states have been realized. However, full control of a quantum mechanical mode, which is necessary for successful quantum information processing based on electromechanical systems, has yet to be demonstrated. Our goal is to develop a novel quantum electromechanical device capable of obtaining full quantum control of a macroscopic mechanical resonator by integrating a phononic microcavity with a superconducting transmon qubit.

The phononic microcavity is formed by two GaAs/AlAs superlattice, Distributed Bragg Reflector (DBR) mirrors and a λ/2 cavity. The DBRs are grown by MBE in-house at the INSP using a state-of-the-art Riber Compact 21 molecular beam epitaxy (MBE) machine for III-V semiconductor growth.  The transmon qubits are made using ebeam lithography and angle evaporation using the Dolan bridge technique. All the measurements are performed in a cryogen-free dilution refrigerator equipped with high frequency electrical waveguides and cryogenic amplifiers.



Audrey Bienfait and Benjamin Huard from ENS Lyon provide their expertise in quantum information and superconducting transmon qubits.

Paola Atkinson provides her extensive experience in the growth and design of microcavities.