quantum tomography

WHAT IS IT?

Quantum tomography refers to the task of identifying an unknown quantum object, completely or partially, from measurement outcome statistics. It can therefore be seen as a form of quality control for quantum technologies: quantum tomography allows one to certify that a given quantum device works as intended. 

OUR RESEARCH

Our research on quantum tomography can be divided into two main lines:

1. We explore ways of exploiting prior information regarding the unknown object in order to reach more efficient tomographic schemes. We try to understand what kind of prior information is useful for practical purposes, and how the measurements used in the identification process can be optimized using this information. 
2. We study the possibility of certifying the presence of quantum properties, such as entanglement, without resorting to full tomographic reconstruction. We try to find optimal measurements which enable one to succeed in these tasks with high probability.

RECENT ARTICLES

• C. Carmeli, T. Heinosaari, S. Maniscalco, J. Schultz, A. Toigo: Determining quantum coherence with minimal resources. New J. Phys. 20, 063038 (2018)​ [arXiv].
• C. Carmeli, T. Heinosaari, J. Schultz, A. Toigo: Probing quantum state space: does one have to learn everything to learn something? Proc. R. Soc. A, 473, 20160866 (2017) [arXiv].

CONTACT PERSON

Teiko Heinosaari

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