BInd: Bosonic indistinguishability as a resource for quantum technologies

Project funded by Fundação para a Ciência e a Tecnologia, I.P. (FCT) (Concurso de Projetos Exploratórios em Todos os Domínios Científicos 2023), grant 2023.15565.PEX. Funded amount: EUR 49,952.50, as stated by the source. Runs 2025-02-01 to 2026-07-31. Keywords: quantum optics, quantum information, quantum computation, Exact sciences. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2025-07-19); national funding data, not CORDIS. Abstract given by the source: The past few decades have seen a stunning development in the ability to control individual quantum systems. This not only allows us to test fundamental properties of quantum mechanics, such as quantum superposition or quantum entanglement, at an unprecedented scale but also we can use this control to develop new transformational technologies such as quantum cryptography, quantum metrology and quantum computers and simulators. Many of these technologies are based on the ability to control a large number of bosonic particles such as photons or certain kinds of atoms which can be trapped in optical lattices. Indeed, recent experiments with large-scale photonic circuits have already claimed quantum computational advantage for a particular problem called boson sampling [Zh20]. The boson sampling problem has attracted a lot of recent interest because of its apparent simplicity and experimental feasibility: it is a purely linear interferometry experiment followed by photon counting measurements. The seminal work of computer scientists Aaronson and Arkhipov provided compelling arguments coming from complexity theory which show that no classical algorithm can efficiently simulate boson sampling [AA11]. The capability to do boson sampling is also seen as an important milestone on the road to develop a large-scale photonic quantum computer. An important challenge for photonic quantum technologies is that photon sources are not perfect. Phhotons have its own internal degrees of freedom like polarization or frequency and imperfect photon sources as well as synchronization problems imply that photons that will have small differences in their internal degrees of freedom making them partially distinguishable [Ti15a, Sh15] . This is an important hindrance to potential technological applications. For example, it is known that partial distinguishability can be exploited by classical simulations of boson sampling, which may invalidate claims of quantum computational advantage [Re18] [shortened; the full text is on the OpenAIRE page]

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Fundação para a Ciência e a Tecnologia, I.P. (FCT). Retrieved 2026-10-22. Licence: Creative Commons Attribution 4.0 (OpenAIRE Graph). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: Creative Commons Attribution 4.0 (CC BY 4.0).

AI-assisted summary: The project "BInd: Bosonic indistinguishability as a resource for quantum technologies" is funded by FCT with a grant of EUR 49,952.50, running from February 1, 2025, to July 31, 2026, focusing on quantum optics and information. Suggested technology pillar: computing. Generated by AI from the public source text; it may contain errors and the original source is authoritative.