This speaker series is geared towards undergrad (and grad) researchers in quantum information science and technology, and all are welcome.
Speaker: Joe Slote (UW)
When: Tuesday 07/14, 2pm
Where: Bill & Melinda Gates Center for Computer Science & Engineering, Room G04 (from the main entrance, take the stairs down on the left)
Title: Certifying quantum states with simple measurements
Abstract: An important and basic task in quantum science is to test whether an unknown, lab-prepared state is close to some ideal target state. The hidden and global structure of quantum mechanics means that naive solutions to state certification require either (i) exponentially-many copies of the lab state, or (ii) experimental procedures that are as difficult as preparing the ideal state itself.
In this talk we explain a new method for certifying quantum states with mild experimental demands: only a constant number of copies of the lab state are required, and only one qubit is measured at a time. Along the way we will develop a new uncertainty principle for fidelities of post-selected states.
Based on recent work with Andrea Coladangelo, Jerry Li, and Ellen Wu.