Quantum Technology Initiative Journal Club

Thursday 20 Jun 2024, 16:00 → 17:00 Europe/Zurich

513/R-070 - Openlab Space (CERN)

Alice Barthe (Leiden University (NL)), Michele Grossi (CERN), Su Yeon Chang (EPFL - Ecole Polytechnique Federale Lausanne (CH))

Weekly Journal Club meetings organised in the framework of the CERN Quantum Technology Initiative (QTI) to present and discuss scientific papers in the field of quantum science and technology. The goal is to help researchers keep track of current findings and walk away with ideas for their own research. Some previous knowledge of quantum physics would be helpful, but is not required to follow the talks.

To propose a paper for discussion, contact: michele.grossi@cern.ch

16:00 → 17:00 CERN QTI Journal CLUB: TITLE

Convener: Dr Michele Grossi (CERN)

16:00 Carla Rieger (CERN QTI)

TITLE: Learning t-doped stabilizer states

Link to the paper: https://quantum-journal.org/papers/q-2024-05-27-1361/

Abstract:
In this paper, we present a learning algorithm aimed at learning states obtained from computational basis states by Clifford circuits doped with a finite number t of T-gates. The algorithm learns an exact tomographic description of t-doped stabilizer states in terms of Pauli observables. This is possible because such states are countable and form a discrete set. To tackle the problem, we introduce a novel algebraic framework for t-doped stabilizer states, which extends beyond T-gates and includes doping with any kind of local non-Clifford gate. The algorithm requires resources of complexity poly(n,2t) and exhibits an exponentially small probability of failure.

Speaker: Carla Sophie Rieger (Technische Universitat Munchen (DE))

recording