Superconducting circuits get contextual!

One of the biggest experimental efforts of our lab came finally to the end. We used all the advances we developed for superconducting circuits to probe quantum conetxtuality first time for superconducting circuits. Contextuality is one of the most fundamental properties of quantum mechanics, distinguishing it from classical physics without a need for nonlocality or entanglement. It is also a critical resource for exponential speedup in universal surface-code quantum computing. Our result is the first experiment violating a noncontextuality inequality with an indivisible system where entanglement cannot be defined which also addresses all known major loopholes, such as the detection, compatibility and individual-existence loopholes. Violating noncontextuality with superconducting circuits, a leading candidate for implementing surface-code quantum computing, comprises an important conceptual milestone in demonstrating their suitability for quantum technological applications.

Qutrit under control

Check out what one can do with a sperconducting qutrit: create quantum states, perform quantum tomography of these states and even quantum process tomography for the measurement. More importantly one can even probe one level of the qutrit while not disturbing two others.

Beatiful photos from Dorit Jerger.

Dorit Jerger was generous enough to share her photos of Australia with us. She has  a great collection of photos starting from views of Brisbane and finishing with picturesque sand beaches.  Thanks to Dorit our photo galleries tripled in size and you have a nice opportunity to see many of these beatiful views.

Everbeing probe station installation

The head of Everbeing came to UQ from Taiwan to install our new EB-4 probe station.

Markus Jerger won the first Pan Pacific Cup in underwater rugby

Believe it or not but our group member Markus Jerger defeated both the Australian and Singapore national teams in underwater rugby

plassys evaporator

Plassys installation

After months of filling forms and finalizing orders our Plassys MEB 550S evaporator has finally arrived and been installed.