Next Wednesday the 11th of March 2026 we will be pleased to host Ms Paula Alonso, who will be gvining a talk entitled "Secure multi-party computation from entanglement-based quantum oblivious transfer in the noisy quantym storage model". Below you can find the abstract for the talk and a biography of Ms Alonso.
Abstract:
Secure multi-party computation (SMPC) allows several parties to process sensitive data jointly while keeping their inputs private. A key primitive enabling this functionality is Oblivious Transfer (OT), where a sender encodes two pieces of information and a receiver can learn only one of them without revealing their choice.
In this seminar, I will present an experimental implementation of entanglement-assisted Quantum Oblivious Transfer (QOT) based on photonic entangled pairs and operating in the Noisy Quantum Storage Model (NQSM), where security arises from realistic limitations of quantum memories rather than computational assumptions, achieving ε-secure QOT. The protocol uses an arbitrary Bell-state pulsed entangled-photon source, wavelength multiplexing, and an optical delay line to scramble photon pairs before transmission, preventing the receiver from accessing both encoded bits.
As part of this effort, I am visiting ISOM to deploy the experiment over fiber in the Madrid Quantum Network. In this setting, we will test entanglement-based QOT together with newly developed discrete-variable
and continuous-variable QOT protocols, aiming to demonstrate realistic secure multi-party computation for three use cases in genomic medicine.
Biography:
Paula Alonso is a Ph.D. student at ICFO under the supervision of Prof. Valerio Pruneri, funded by the Spanish Ministry. Her research focuses on practical quantum cryptography, including QKD, PQC/QRNG integration, and beyond-QKD protocols such as Quantum Oblivious Transfer. She also contributes to European quantum-safe projects including QSNP and QuantaGENOMICS, and completed her MSc thesis in Quantum Science and Technology at SandboxAQ, a Google spin-off.
