Tootfinder

Scalable Network of Mach-Zehnder Interferometers with a Single Entangled Resource
Zhihui Yan, Yanni Feng, Luca Pezze, Zhaoqing Zeng, Jingxu Ma, Xiaoyu Zhou, Augusto Smerzi, Xiaojun Jia, Kunchi Peng
https://arxiv.org/abs/2509.08230

Scalable Network of Mach-Zehnder Interferometers with a Single Entangled Resource
Distributed quantum sensing exploits entanglement to enhance the estimation of multiple parameters across a network of spatially-separated sensors, achieving sensitivities beyond the classical limit. Potential applications cover a plethora of technologies, from precision navigation to biomedical imaging and environmental monitoring. However, practical implementations are challenged by the complex optimal distribution of entanglement throughout the sensing nodes, which affects scalability and ro…

Multi-laser stabilization with an atomic-disciplined photonic integrated resonator
Andrei Isichenko, Andrew S. Hunter, Nitesh Chauhan, John R. Dickson, T. Nathan Nunley, Josiah R. Bingaman, David A. S. Heim, Mark W. Harrington, Kaikai Liu, Paul D. Kunz, Daniel J. Blumenthal
https://arxiv.org/abs/2509.09124

Multi-laser stabilization with an atomic-disciplined photonic integrated resonator
Precision atomic and quantum experiments rely on ultra-stable narrow linewidth lasers constructed using table-top ultra-low expansion reference cavities. These experiments often require multiple lasers, operating at different wavelengths, to perform key steps used in state preparation and measurement required in quantum sensing and computing. This is traditionally achieved by disciplining a cavity-stabilized laser to a key atomic transition and then transferring the transition linewidth and sta…

Node Position Estimation in Diffusion-Based Molecular Communications Using Multi-Layer Perceptron
Sangjun Hwang, Chan-Byoung Chae
https://arxiv.org/abs/2509.07441 https://

Node Position Estimation in Diffusion-Based Molecular Communications Using Multi-Layer Perceptron
This paper proposes a method for accurately estimating the relative position between two nodes with unknown locations in a diffusion-based molecular communication environment. A specialized node structure is designed, combining a central absorbing receiver with multiple transmitters placed at predefined spherical coordinates. Pilot molecules are released, and their absorption time and concentration are measured. By partitioning the spherical coordinate space, these spatially distinct measuremen…

Distributed quantum sensing with multi-mode $N00N$ states
Dong-Hyun Kim, Seongjin Hong, Yong-Su Kim, Kyunghwan Oh, Su-Yong Lee, Changhyoup Lee, Hyang-Tag Lim
https://arxiv.org/abs/2508.02070

Distributed quantum sensing with multi-mode $N00N$ states
Distributed quantum sensing, which estimates a global parameter across distant nodes, has attracted significant interest for applications such as quantum imaging, sensor networks, and global-scale clock synchronization. $N00N$ states are regarded as one of the optimal quantum resources for quantum metrology, enabling the Heisenberg scaling. Recently, the concept of $N00N$ states has been extended to multi-mode $N00N$ states for quantum-enhanced multiple-parameter estimation. However, the applic…

Octave Spanning Visible to SWIR Integrated Coil-Stabilized Brillouin Lasers
Meiting Song, Nitesh Chauhan, Mark W. Harrington, Nick Montifiore, Kaikai Liu, Andrew S. Hunter, Chris Caron, Andrei Isichenko, Robert J. Niffenegger, Daniel J. Blumenthal
https://arxiv.org/abs/2508.03036

Octave Spanning Visible to SWIR Integrated Coil-Stabilized Brillouin Lasers
Narrow linewidth stabilized lasers are central to precision applications that operate across the visible to short-wave infrared wavelengths, including optical clocks, quantum sensing and computing, ultra-low noise microwave generation, and fiber sensing. Today, these spectrally pure sources are realized using multiple external cavity tabletop lasers locked to bulk-optic free-space reference cavities. Integration of this technology will enable portable precision applications with improved reliab…

Enhancing Resilience Against Jamming Attacks: A Cooperative Anti-Jamming Method Using Direction Estimation
Amir Mehrabian, Georges Kaddoum
https://arxiv.org/abs/2507.14775

Enhancing Resilience Against Jamming Attacks: A Cooperative Anti-Jamming Method Using Direction Estimation
The inherent vulnerability of wireless communication necessitates strategies to enhance its security, particularly in the face of jamming attacks. This paper uses the collaborations of multiple sensing nodes (SNs) in the wireless network to present a cooperative anti-jamming approach (CAJ) designed to neutralize the impact of jamming attacks. We propose an eigenvector (EV) method to estimate the direction of the channel vector from pilot symbols. Through our analysis, we demonstrate that with a…