Quantum Days’ Post

🚨 New Paper Alert! 🎉 Entangled photon pairs are essential for quantum communication. Time-bin entangled photons offer greater stability when sent through fiber-optic cables. In our latest paper, we: 🔍 Develop a theoretical framework for measuring time-bin entangled photons using multitime correlation functions. 🧮 Provide a method for quantum state tomography to describe time-bin-encoded photon pairs. Our approach sets the stage for exploring the full potential of time-bin entanglement from quantum emitters, as our framework is ready to include various loss and decoherence effects, as well as advanced excitation schemes for time-bin entanglement. 🎖️ We’re excited that our paper was selected as an Editor’s Suggestion! 🔗 Check out the paper in PRA: https://lnkd.in/emYq33hx Thanks to Thomas, Florian Kappe, Moritz Cygorek, Tim Seidelmann, Yusuf Karlı, Vikas Remesh, Gregor Weihs and Martin for the collaboration. Technische Universität Dortmund, Quantum Science Austria, Universität Innsbruck, Universität Bayreuth #QuantumCommunication #EntangledPhotons #QuantumTheory #QuantumResearch #QuantumTech #NewPublication #EditorsPick #SUPERquantum #IYQ2025

Our last paper on the theoretical framework for time-bin entanglement, led by Doris Reiter and Thomas K. Bracht, has been accepted by Physical Review A and was selected as an Editor's Suggestion! 🎉 Check out the paper in PRA: https://Inkd.in/emYq33hx #Physics #QuantumPhysics #PRA

🌟 New preprint uploaded to the arXiv! In this work carried out by our Industrial PhD student Ana Palacios de Luis, we explore the capabilities of quantum reservoirs on complex and many-body quantum systems. In this paper, we show how different quantum effects, such as quantum coherence and correlations, contribute to improving the performance of the quantum reservoir based on a transverse-field Ising model. 🤩 💡 𝐎𝐮𝐫 𝐫𝐞𝐬𝐮𝐥𝐭𝐬 𝐫𝐞𝐯𝐞𝐚𝐥 𝐚 𝐦𝐨𝐧𝐨𝐭𝐨𝐧𝐢𝐜 𝐫𝐞𝐥𝐚𝐭𝐢𝐨𝐧𝐬𝐡𝐢𝐩 𝐛𝐞𝐭𝐰𝐞𝐞𝐧 𝐫𝐞𝐬𝐞𝐫𝐯𝐨𝐢𝐫 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐚𝐧𝐝 𝐜𝐨𝐡𝐞𝐫𝐞𝐧𝐜𝐞, 𝐚𝐥𝐨𝐧𝐠 𝐰𝐢𝐭𝐡 𝐭𝐡𝐞 𝐢𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐜𝐞 𝐨𝐟 𝐪𝐮𝐚𝐧𝐭𝐮𝐦 𝐞𝐟𝐟𝐞𝐜𝐭𝐬 𝐢𝐧 𝐭𝐡𝐞 𝐞𝐫𝐠𝐨𝐝𝐢𝐜 𝐫𝐞𝐠𝐢𝐦𝐞. 🔗 𝐂𝐡𝐞𝐜𝐤 𝐨𝐮𝐭 𝐭𝐡𝐞 𝐟𝐮𝐥𝐥 𝐩𝐫𝐞𝐩𝐫𝐢𝐧𝐭 𝐟𝐨𝐫 𝐦𝐨𝐫𝐞 𝐝𝐞𝐭𝐚𝐢𝐥! https://lnkd.in/dYXaWne2

The United Nations has designated 2025 as the International Year of Quantum Science and Technology, recognizing that quantum science has reached the point where its promise is moving out of the experimental phase and into the realm of practical applications.

Now at the Bethe Centre in Bonn for the forum about “Fishnet Theories”, literally the battle horse of my research in my PhD and the first years of postdoc. Glad to see the topic grew into a community and that many contributions proved to be useful. Here Benjamin Basso explaining how to understand Feynman Integrals as many-body infinite-dimensional quantum systems.

🎓 New Article Out! 💡 This time is featured in Appl. Phys. Lett. When generating single photons, the way we excite the system matters—a lot! Different excitation schemes come with their own pros and cons. But what if we could combine two of them? In our latest work, we do that by introducing sARP (stimulated Adiabatic Rapid Passage): ✨ Why sARP? We combine chirped excitation, known for its robustness against pulse parameter fluctuations, with the detour approach, where a quantum state is addressed via an auxiliary state using a stimulating pulse, enabling spectral filtering. 🔬 Why it matters? Thanks to its robustness, sARP offers advantages for quantum cryptographic protocols like quantum key distribution (QKD) and quantum coin flipping—key building blocks for secure communication in future quantum networks. 🌐 Another step toward photonic quantum technologies is made! 🔗 Check out the full article here: https://lnkd.in/eA_2RHcB 🙌 The work was led by Yusuf Karlı, together with Rene, Florian Kappe, Gregor Weihs & Vikas Remesh from Universität Innsbruck in collaboration with : 🙏 Ria Krämer, Daniel Richter & Stefan Nolte from Friedrich-Schiller-Universität Jena 🙏 Saimon Filipe Covre da Silva and Armando Rastelli from Johannes Kepler Universität Linz 🙏 Daniel Vajner and Tobias Heindel from Technische Universität Berlin 🙏 Thomas and myself from Technische Universität Dortmund. #QuantumTech #QuantumPhysics #Photonics #SinglePhotons #QuantumCommunication #QuantumCryptography #QuantumKeyDistribution #QKD #QuantumResearch #NewArticle #AdiabaticRapidPassage #QuantumEmitters #ScientificCollaboration #QuantumNetworks #AppliedPhysics #PhysicsResearch #SUPERquantum

The United Nations has designated 2025 as the International Year of Quantum Science and Technology, recognizing that quantum science has reached the point where its promise is moving out of the experimental phase and into the realm of practical applications.

Another paper published this week! One of the final outcomes of my PhD thesis in Innsbruck has been published and chosen as a Featured Article in Applied Physics Letters for their special issue on Quantum Networks. A big thanks to all my co-authors for their effort and support in this work. Details and importance are beautifully explained below by Doris👇

Hi everybody, I am looking forward to attending the URSI National Radio UPDATE: Slides uploaded to LinkedIN. See my new post 🫡 Science Meeting (NRSM) that will be held in Boulder, Colorado, Jan 7-11. A short paper titled "The Computational Burden of Next-Gen Terahertz SDR and Algorithmic Paths for Solutions" by Professors Renato Cintra (UFPE, Brazil), Yasaman Ghasempour (Princeton), Josep Miquel Jornet (Northeastern), and myself will be presented by yours truly. If you will be in the Boulder/Denver area and/or attending NRSM-2025 during Jan 9-11, please let me know. Would love to catch up with you. The paper in brief: we talk about the repercussions of baseband bandwidth scaling in 6G and beyond. For the same algorithm, say you need M multiply-add operations per second for B bandwidth. When you have 100B bandwidth, if your algorithms remain the same, you now got to deal with 100M number of MACs which means 100x power increase and 100x increase of compute. Unless there is a hardware/silicon miracle, this is not a realistic situation. How do we deal with such scaling at the chip level? We have a few tricks up our sleeve...

100 years of quantum is just the beginning… On June 7, 2024, the United Nations proclaimed 2025 as the International Year of Quantum Science and Technology (IYQ). According to the proclamation, this year-long, worldwide initiative will "be observed through activities at all levels aimed at increasing public awareness of the importance of quantum science and applications." https://lnkd.in/ewE48yfY