Christian Bekker, Christopher Baker and Warwick Bowen are kicking us off for 2021 with their demonstration of broad wavelength tuning of photoluminescence on a silicon chip. Get on our wavelength at Physical Review Applied.
Cosmological wavefunction collapse
Read all about our new proposal for an optomechanical test of cosmological wavefunction collapse in our journal article, or Stefan Forstner’s piece in The Conversation.
How vortex clusters expand
Call us spin doctors if you must, but we’re here with more vortex news to wrap your head around: Warwick Bowen and colleagues studied how vortices in a superfluid spread out over time from an initial arrangement. They found that each and every initial configuration results in a top-hat shaped velocity-position profile. Hat tip to our friends and colleagues at FLEET!
Mechanical squeezing
Just out: Chao Meng, George Brawley, James Bennett, Michael Vanner and Warwick Bowen predict that quantum squeezing could be achieved outside of the backaction-dominated, and quantum-coherent, oscillation regimes.
Quantum waves travel in a slot-waveguide
In our latest publication, Glen Harris, Andreas Sawadsky, Yasmine Sfendla, Walter Wasserman, Warwick Bowen and Chris Baker suggest filling a slot waveguide with superfluid to create an ultralow-dissipation resonator for travelling acoustic and optical waves. If you are familiar with our work, that suggestion should not come as a surprise. What can we say? A layer of superfluid does make everything better. Superfluid, some might say, is the mayonnaise of quantum optics.
A very small, not very cold, magnetosensor
Any scientist knows the importance of taking data with a grain of salt. Here at the QO Lab, Beibei Li, George Brawley, Hamish Greenall, Stefan Forstner and Warwick Bowen went a step further and developed a sensitive on-chip room-temperature magnetometer by embedding a grain of magnetorestrictive material in an optical cavity. Read on in Photonics Research.
Our sounds of science
At the 2017 Frontiers of Quantum and Mesoscopic Thermodynamics conference, participating physicists were asked to reflect on the greatest challenges facing the scientific community at this time. Out of the answers (slightly biased towards quantum and mesoscopic thermodynamics, perhaps) came this eclectic article. In the seventh chapter, Warwick Bowen, Nico Mauranyapin and Lars Madsen shed some squeezed light on motor molecules.
2020 Barry Inglis Medal for Warwick Bowen
Our group leader Warwick Bowen received the 2020 Barry Inglis Medal for the development of quantum technologies that benefit measurement science. A tremendous honor!
Growing crystals better
At the QO lab, we believe growth is fundamental to science. Especially when it concerns crystals on silicon. In our new paper Erick Romero, Atieh Kermany, Leo Sementilli, Warwick Bowen & collaborators carve out a method to quantify and engineer the dissipation of thin crystalline mechanical resonators. (F)etch a defect-free version at Phys. Rev. Applied!
Strongly coupled photons in superfluid
Back at it again with the microdisks: Xin He, Glen Harris, Chris Baker, Andreas Sawadsky, Yasmine Sfendla, Yauhen Sachkou, Stefan Forstner and Warwick Bowen strongly coupled photons to counterpropagating photons, via waves in superfluid helium. We try to keep our research as low-threshold as our Brillouin laser, so the full article in Nature Physics is available here: