Description du projet
Une nouvelle méthode permet des interactions efficaces entre les photons
Les photons offrent la possibilité d’un calcul quantique évolutif grâce à leur capacité de transmission à faible perte sur de longues distances, de multiplexage des informations quantiques et de fonctionnement dans des environnements standard. Cependant, les photons n’interagissent pas facilement entre eux, ce qui constitue un défi pour le traitement de l’information quantique (TIQ). Pour remédier à cela, le projet PANDA, financé par l’UE, concevra un réseau d’atomes neutres de strontium avec un espacement sub-longueur d’onde afin de permettre des interactions photon-photon déterministes et sans perte. Cette configuration, combinée à une manipulation efficace des photons uniques, permettra de réaliser de puissantes opérations non linéaires dans le cadre de plusieurs applications TIQ. Les chercheurs prévoient d’appliquer la plateforme proposée aux TIQ à variables continues et aux TIQ à variables discrètes.
Objectif
The quantum properties of photons -- allowing low-loss long-distance transmission, multiplexing large amounts of quantum information into a single channel, and operations in standard, room-temperature settings -- yield great promise for scalable quantum computing (QC). However, low interaction is their great weakness for quantum information processing (QIP), as quantum circuits require photon-photon interactions. To date, two-photon interactions have only been facilitated either probabilistically with low efficiency or between individual photons via intermediaries with errors much too large for practical QIP. PANDA has an ambitious core goal of building the foundation for a photonic quantum computer: an array of neutral strontium atoms with subwavelength spacing carefully designed to harness collective effects to implement lossless, deterministic photon-photon interactions. Combined with novel high-efficiency single-photon handling, we will construct a powerful platform for strong, efficient, controllable non-linear operations with many QIP applications. These include deterministic two-photon quantum gates with unprecedented efficiency and repeat rates. We will especially apply our platform to continuous-variable (CV) QIP, particularly Measurement-Based QC, which fully utilizes quantum light field advantages, but has been hindered by the lack of deterministic non-Gaussian photon state generation and is not addressed in the Quantum Flagship. Using our platform for deterministic photon subtraction will address this and, with a CV theory roadmap we will develop, pave the way for photonic QC. Our two-photon gates will also be applicable to Discrete-Variable QIP, placing PANDA in a complementary position to many possible portfolio projects. PANDA incorporates world-class experimentalists and theorists from leading research groups and SMEs with the expertise required to develop core technology that will both yield marketable IPR and fulfill our ambitious objectives.
Champ scientifique
Mots‑clés
Programme(s)
- HORIZON.3.1 - The European Innovation Council (EIC) Main Programme
Régime de financement
HORIZON-EIC - HORIZON EIC GrantsCoordinateur
75006 Paris
France