A5023394063- Quantum Computing Algorithms and Architecture
- Quantum Information and Cryptography
- Spectroscopy and Laser Applications
- Optical Network Technologies
- Quantum Mechanics and Applications
- Gas Sensing Nanomaterials and Sensors
- Cryptography and Data Security
- Photonic and Optical Devices
- Laser-Matter Interactions and Applications
- Advanced Optical Network Technologies
- Advanced Fiber Laser Technologies
- Molecular Communication and Nanonetworks
- Advanced Photonic Communication Systems
- Optical properties and cooling technologies in crystalline materials
- Neural Networks and Reservoir Computing
- Atomic and Subatomic Physics Research
- Advanced Chemical Sensor Technologies
University of Geneva
2023-2024
Laboratoire de Recherche en Informatique de Paris 6
2023
Centre National de la Recherche Scientifique
2023
Sorbonne Université
2023
As in modern communication networks, the security of quantum networks will rely on complex cryptographic tasks that are based a handful fundamental primitives. Weak coin flipping (WCF) is significant such primitive which allows two mistrustful parties to agree random bit while they favor opposite outcomes. Remarkably, perfect information-theoretic can be achieved principle for WCF. Here, we overcome conceptual and practical issues have prevented experimental demonstration this date,...
We provide the first proof-of-principle experimental implementation of certified qubit transmission through an untrusted quantum channel, using one part a maximally-entangled photon as probe. The theoretical framework includes self-testing in non-IID and semi device-independent setting, combined with new results on lossy channels.
In recent years, quantum Fourier transform infrared (QFTIR) spectroscopy was proposed as an alternative to conventional in the mid-infrared region of spectrum. this way, harnessing induced coherence and spectral entanglement offers perspectives for practical organic gasses detection. Still, little research conducted order bring QFTIR spectrometers closer domestic or in-field usage. work, we first use such a spectrometer open-path detection multiple interfering ambient air. The accurate...
In recent years, quantum Fourier transform infrared (QFTIR) spectroscopy has emerged as an alternative to conventional absorption in the mid-infrared region of spectrum. By harnessing induced coherence and spectral correlations photon pairs a nonlinear Michelson interferometer, this technique offers promising potential for practical detection organic gases. However, little research was conducted bring QFTIR spectrometers closer domestic or in-field usage. work, we present first use...
We present the architecture and analyze applications of a metropolitan-scale quantum network that requires only limited hardware resources for end users. Using NetSquid, simulation tool based on discrete events, we assess performance several protocols involving two or more users in various configurations terms topology, trust choices. Our analysis takes losses errors into account considers realistic parameters corresponding to near-term technology. results show practical quantum-enhanced...
Multipartite entangled states are an essential building block for advanced quantum networking applications. Realizing such tasks in practice puts stringent requirements on the characteristics of terms fidelity and generation rate, along with a desired compatibility telecommunication network deployment. Here, we demonstrate photonic platform design capable producing high-fidelity Greenberger-Horne-Zeilinger (GHZ) states, at telecom wavelength compact scalable configuration. Our source relies...
A Quantum FTIR spectrometer was used to detect, discriminate and track organic gases in ambient air with unprecedented sensitivity, leveraging spectral entanglement, induced coherence, long-path absorption, specific analysis techniques such as DOAS.
Quantum transmission links are central elements in essentially all protocols involving the exchange of quantum messages. Emerging progress technologies such needs to be accompanied by appropriate certification tools. In adversarial scenarios, a method can vulnerable attacks if too much trust is placed on underlying system. Here, we propose protocol device independent framework, which allows for practical scenarios where minimal assumptions made about functioning setup. particular, take...