Foundational Underpinnings of Quantum Technologies (FUQT)

Submitted by absainz on Thu, 04/22/2021 - 15:56
Faculty/school/department
International Centre for Theory of Quantum Technologies
Size of the team
number of researchers number of supporting staff number of PhD students
3
1
3
PI
PI name
Ana Belén Sainz
PI bio

Dr. Sainz's research focuses on developing an operational understanding of the nonclassical features of Nature (such as Bell non-classicality), tailored at their role as resources for information processing. Her long term vision is to develop an understanding of the possibilities and limitations of quantum resources for technological applications.

Postdoctoral experience: Perimeter Institute for Theoretical Physics (Canada), University of Bristol (UK), and ICFO (Spain). Dr. Sainz was awarded her PhD in 2014 at ICFO-The Institute of Photonic Sciences, under the supervision of Prof. Antonio Acín. 

Dr. Sainz is also a founding member and the Deputy Chair of “Q-turn: Association for the Promotion of Diversity and Equal opportunities in quantum science”. The Q-turn mission is to develop a safe, diverse, and inclusive workplace for quantum scientists; and to highlight outstanding research that may be under-appreciated in traditional high-impact venues due to systemic biases.

Webpage: www.absainz.com

Orcid: 0000-0003-3123-8436

Contact person and e-mail
Contact person
Ana Belén Sainz
Contact person e-mail
WWW
Short description of research profile

We strive to understand the nonclassical phenomena featured in Nature, and how to harness their power to enable new forms of information processing. Our goal is to assess the landscape of nonclassical physical theories –which may supersede quantum theory– and their impact on technological developments. Our research lines are:

Discovering a theory beyond quantum

We explore the possibilities of a physical theory beyond quantum theory: whether such a theory can be conceived, and, if so, which apparently fundamental quantum features must be abandoned.

Characterising quantum phenomena

We study how to generate an intuitive understanding of the statistical predictions of quantum theory (which would help us devise technological applications), and how to quantify such non-classicality in a way that measures the quantum advantage.

Harnessing nonclassicality for information processing

We explore how new non-classical phenomena can be used to power technological developments.

Developing the foundations for quantum software

We aim to leverage the versatility of the so-called zx-calculus to tackle basic questions about quantum computation, which include the identification of the source of speed-up in quantum computing.

Projects/Grants:

- “The Emergence of Agents from Causal Order”, FQXi large research grant. (2018-2021)

- “Q-Turn 2020 Workshop: Changes Paradigms in Quantum Science”, FQXi mini-grant. (2020)

- “Increase visibility of women researchers in quantum information science”, FQXi mini-grant. (2021-2022)

- “Expressibility of non-classicality”, NCN Miniatura. (2021-2022)

Publications

Representative publications

Bipartite post-quantum steering in generalised scenarios Ana Belén Sainz, Matty J. Hoban, Paul Skrzypczyk, Leandro Aolita Phys. Rev. Lett. 125, 050404 (2020)
Quantifying Bell: the Resource Theory of Nonclassicality of Common-Cause Boxes Elie Wolfe, David Schmid, Ana Belén Sainz, Ravi Kunjwal, Robert W. Spekkens Quantum 4, 280 (2020)
Almost quantum correlations violate the no-restriction hypothesis Ana Belén Sainz, Yelena Guryanova, Antonio Acín, Miguel Navascués Phys. Rev. Lett. 120, 200402 (2018)
Postquantum steering Ana Belen Sainz, Nicolas Brunner, Daniel Cavalcanti, Paul Skrzypczyk, Tamás Vértesi Phys. Rev. Lett. 115, 190403 (2015)
A Combinatorial Approach to Nonlocality and Contextuality Antonio Acín, Tobias Fritz, Anthony Leverrier, Ana Belén Sainz Comm. Math. Phys. 334(2), 533-628 (2015)

Link to extended list of publication