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Prospects for a quantum electro-optic interface via micromechanical motion (Prof. C. Regal)

  • Datum: 09.01.2018
  • Uhrzeit: 14:30 - 15:30
  • Vortragender: Prof. Dr. Cindy Regal
  • JILA - University of Colorado at Boulder, USA
  • Raum: New Lecture Hall, Room B 0.32
  • Gastgeber: MPQ
Superconducting qubits have become a powerful resource for the creation of arbitrary quantum states.

Yet optical links are the best way to preserve a quantum state over long distances. I present work in which we are developing an efficient and low-added noise link between the microwave and optical domains via the motion of a micromechanical membrane. Recent results include the demonstration of a nearly 50% efficient classical converter at dilution refrigerator temperatures, and harnessing electro-optic correlations for suppression of added thermal noise. The opto-mechanical readout in the converter is predicated on efficient extraction of information from the micromechanical motion. In a similar spirit, I will discuss efficient opto-mechanical readout from the perspective of probing limits to continuous displacement detection in an interferometer.

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