Harold Ollivier - Quantum computation and cryptography

My research is centered on cryptographic verification of quantum computations, benchamrking quantum machines, as well as quantum machine learning.

I also lead the QAT team at DI-ENS, a joint team between Ecole Normale Supérieure, CNRS and INRIA. I serve as deputy scientific director for quantum information science at INRIA, and I co-lead the PEPR-Quantique and the Hybrid HPCxQuantum Initiative R&D program.

• 2026-02-01: Opening of a 24 month postdoctoral position on Quantum Cryptography and Verification of Quantum Computation

I joined INRIA april 2021 after 2 years at LIP6 (Sorbonne Université - CNRS). I started research on quantum information in 2000 at Los Alamos National Lab with W.H. Zurek working on decoherence—introducing Quantum Discord and the first characterizations of Quantum Darwinism. I joined Perimeter Institute for Theoretical Physics as a Postdoctoral fellow in 2004, working mainly on quantum error correction and quantum algorithms.

I paused research in 2007, switching to corporate finance at the Ministry of Finance, then rapidly joining a private equity fund and finally launching a successful M&A boutique that soon reached more than 25 professionals and 5 offices across France. At the end of 2017, I founded an AI-based startup for reconstructing hidden professional network in the corporate finance space.