Speaker: Markus Rambach
Affiliation: University of Queensland
Abstract
Quantum tomography—characterising a quantum system by assigning it a quantum state—is an essential building block for future technologies like quantum metrology or quantum computation. Ideal quantum tomography is accurate and robust to noise, while simultaneously being quick and efficient. The standard technique used for decades only fulfils parts of these criteria and quickly becomes unfeasible, even for medium sized systems.
Our method of self-guided quantum tomography is a direct technique where the result is converging to the state itself rather than providing an estimate of its fidelity. As well as being robust and precise, this technique works quickly, autonomously, and efficiently.
In this seminar I will present a brief introduction to quantum state tomography and qudits, higher-dimensional quantum systems, and show our experimental results on self-guided tomography applied to photon-shape qudits carrying optical angular momentum, a higher-dimensional system which naturally lends itself to this technique.
About Physics Seminars
The weekly Physics Seminar series focuses on a broad range of physics research within SMP, along with frequent presentations from visiting researchers. Seminars are usually scheduled for 1.00pm on Tuesdays.
The talks are typically more specialised than a colloquium but are often attended by staff and PhD students across a broad range of areas. Speakers are thus encouraged to include introductory material in the talks.
All SMP researchers and HDR students are encouraged to speak. Please email Lewis Williamson to register your interest.
The seminars are open so there is no need to register your attendance.