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CORDIS

Photon-Atom Non-linearities and Deterministic Applications via arrays

Projektbeschreibung

Neue Methode sorgt für effiziente Wechselwirkungen zwischen Photonen

Photonen weisen Potenzial in Bezug auf eine skalierbare Quanteninformatik auf, da sie verlustarm über große Entfernungen übertragen werden können, Quanteninformationen multiplexen und in genormten Umgebungen funktionieren. Photonen interagieren jedoch nicht ohne weiteres miteinander, was eine Herausforderung für die Quanteninformationsverarbeitung darstellt. Im Rahmen des EU-finanzierten Projekts PANDA wird eine Anordnung neutraler Strontiumatome mit Abständen im Subwellenlängenbereich entwickelt, die verlustfreie, deterministische Photonen-Photonen-Wechselwirkungen gestatten. Dieser Aufbau, kombiniert mit einer effizienten Handhabung von Einzelphotonen, wird leistungsstarke nichtlineare Operationen mit verschiedenen Anwendungen der Quanteninformationsverarbeitung ermöglichen. Die Forschenden planen, die vorgeschlagene Plattform auf die Quanteninformationsverarbeitung mit kontinuierlichen und diskreten Variablen anzuwenden.

Ziel

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.

Koordinator

SORBONNE UNIVERSITE
Netto-EU-Beitrag
€ 654 083,75
Adresse
21 RUE DE L'ECOLE DE MEDECINE
75006 Paris
Frankreich

Auf der Karte ansehen

Region
Ile-de-France Ile-de-France Paris
Aktivitätstyp
Higher or Secondary Education Establishments
Links
Gesamtkosten
€ 654 083,75

Beteiligte (4)