December 17, 2015 (15:00) the seventeenth Schmidt seminar on superconductivity will take place in NUST «MISIS»

From 15.00 until 16.30

At NUST MISiS

Moscow, Leninsky prosp, building 4

The Lab of superconducting metamaterials / B-702, phone 8-495-638-46-46

Title of the seminar: Probing contextuality with superconducting quantum circuits

Presenter: Arkady Fedorov (The University of Queensland, Australia)

Abstract: Contextuality is one of the most fundamental properties which distinguish quantum mechanics from classical theories. It has also been suggested to be the ‘magical’ resource responsible for an exponential speedup of a quantum computer. We will provide the first experimental evidence of this resource for a three-level quantum system built upon superconducting circuits - one of the leading architectures for quantum computation. By engineering the dispersive shifts of a superconducting qutrit coupled to a microwave cavity, we realize strong projective binary-outcome measurements. In conjunction with the high contrast readout permitted by a parametric amplifier, this allows us to close both the measurement and compatibility loopholes which were present in previous experimental tests.