Year: 2022
Type: article
Abstract: Traveling wave parametric amplifiers (TWPAs) have recently emerged as essential tools for broadband near quantum-limited amplification. However, their use to generate microwave quantum states still misses an experimental demonstration. In this Letter, we report operation of a TWPA as a source of two-mode squeezed microwave radiation. We demonstrate broadband entanglement generation between two modes separated by up to 400 MHz by measuring logarithmic negativity between 0.27 and 0.51 and collective quadrature squeezing below the vacuum limit between 1.5 and 2.1 dB. This work opens interesting perspectives for the exploration of novel microwave photonics experiments with possible applications in quantum sensing and continuous variable quantum computing.
Source: Physical Review Letters
Authors: Martina Esposito, Arpit Ranadive, Luca Planat, Sébastien Leger, Dorian Fraudet, Vincent Jouanny, Olivier Buisson, Wiebke Guichard, Cécile Naud, José Aumentado, Florent Lecocq, Nicolas Roch
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: bronze
Awards: Robust superconducting and hybrid quantum bits, G1103301488, G2121614283, Grenoble Quantum Engineering Doctoral Programme, G292453335, G434337789, ANNEALING-BASED VARIATIONAL QUANTUM PROCESSORS, G6234232976, G6368379812, Multimode cOrrelations in microwave photonics with Superconducting quAntum Circuits, G8500183850, G994248709
OpenAlex ID: W3213066804