Jun 13 – 19, 2015
University of Alberta
America/Edmonton timezone
Welcome to the 2015 CAP Congress! / Bienvenue au congrès de l'ACP 2015!

Optomechanics in a Millikelvin Environment: Towards QND Measurements

Jun 18, 2015, 1:45 PM
CCIS L2-200 (University of Alberta)

CCIS L2-200

University of Alberta

Invited Speaker / Conférencier invité Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) R2-1 Optomechanics - minisymposium II (DCMMP-DAMOPC) / Optomécanique - minisymposium II (DPMCM-DPAMPC)


John Davis (University of Alberta)


It is well known that objects containing many atoms, such as superfluids and superconductors, can behave quantum mechanically when each particle occupies the same ground state. But can large objects demonstrate collective quantum behavior even when their constituent particles do not? For example, can a nanomechanical resonator be coaxed into a ground state of a vibrational degree of freedom? In this talk, I will discuss our progress towards the goal of demonstrating quantum nondemolition measurements of a nanomechanical resonator. In particular, we have developed an optomechanical measurement system based on tapered optical fibers that operates on the baseplate of our dilution refrigerator at 9 mK. Our intent is to demonstrate ground state occupation via quantum jump spectroscopy of the energy of such a quantum nanomechanical resonator.

Primary author

John Davis (University of Alberta)


Allison MacDonald (University of Alberta) Bradley Hauer (University of Alberta) Callum Doolin (University of Alberta) Paul Kim (University of Alberta)

Presentation materials

There are no materials yet.