Parameter and State Estimation in Open Quantum Systems: New Perspectives
DIPC Seminars
- Speaker
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Eliska Greplova, U Aarhus, Denmark
- When
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2017/12/04
12:30 - Place
- Donostia International Physics Center
- Add to calendar
-
iCal
In quantum optics, a quantum system is often measured continuously over time
and the post-processing of the measured signal is then used to characterise
the parameters and/or underlying quantum state. In this talk I will present
the so-called past quantum state, a general technique that helps us determine
outcome of measurements in the case when a system is being continuously
monitored. As a general technique developed using basic building blocks of
quantum measurement theory it can be (and has been) applied to a variety of
experimental systems and led to the improvement of existing parameter
estimation techniques. I will discuss in more detail the application of the
method in the example scenario of electron spin and population dynamics of a
quantum dot. I will compare routinely used parameter estimation techniques
with new approaches based on neural networks and show how this novel paradigm
allows us to estimate physical parameters beyond the realm of Markov
approximation.