19 citations · 88 across the 32 of their papers we have counts for
32 papers · 1 filter
Squeezed- and coherent-state quantum key distribution over a deployed hybrid fibre-free-space channel
Adnan A. E. Hajomer, Huy Q. Nguyen, Ivan Derkach +14
Quantum networks will combine optical fibre with free-space links, yet continuous-variable quantum key distribution (CV-QKD) has been developed predominantly for one medium or the…
FPGA Based Feedforward System for Photonic Quantum Computing Applications
Daniel Duggan, Simon Filgis, Axel B. Bregnsbo +4
Field-programmable gate arrays provide a high-performance solution for real-time signal processing in emerging quantum and photonic technologies. We present an FPGA-based fast feed…
Years of Quantum Uncertainty: From Origins to Modern Insights
Lorcan O. Conlon, Biveen Shajilal, Jie Zhao +6
Heisenberg's uncertainty principle is a cornerstone of quantum mechanics, marking a decisive departure from classical physics. Conceived almost a century ago through a thought expe…
Integrated squeezed light sources for two-mode entanglement in thin-film lithium niobate
Philipp Lohmann, Renato R. Domeneguetti, Daniel Wendland +6
Scalable generation of nonclassical light sources on an integrated platform is a key requirement for photonic quantum information processing. In particular, realizing multiple indi…
Adaptable Continuous Variable Quantum Network with Finite Size Security
Runjia Zhang, Akash nag Oruganti, Huy Q. Nguyen +5
In recent years, continuous-variable quantum key distribution (CV-QKD) has become a promising paradigm for enabling secure communication among multiple end users sharing the same t…
Activating entanglement and EPR steering from continuous-variable resources using witness-based measures
Kaustav Chatterjee, Ulrik Lund Andersen
We introduce a general witness-based framework for quantifying and operationally activating continuous-variable (CV) resources into discrete-variable (DV) bipartite entanglement or…
Testing a continuous-variable noncontextuality inequality with a hybrid-encoded system
Yu Meng, Ying Wang, Clara Henke +7
Continuous-variable quantum systems are promising candidates for quantum computing and quantum information processing. It is widely known that quadrature measurements on Gaussian c…
Quantum State Characterization of Gravitational Waves via Graviton Counting Statistics
Kristian Toccacelo, Thomas Beitel, Ulrik Lund Andersen +1
Although gravitational waves are now routinely observed, the detection of individual gravitons has long been regarded as impossible. Recent work, however, has demonstrated that sin…
Quantum-enhanced biosensing enables earlier detection of bacterial growth
Rayssa B. de Andrade, Anne Egholm Høgh, Gaetana Spedalieri +4
Rapid detection of bacterial growth is crucial in clinical, food safety, and environmental contexts, yet conventional optical methods are limited by noise and require hours of incu…
Non-Gaussian entanglement revealed by higher-order quadrature cumulants
Abhinav Verma, Olga Solodovnikova, Jonas S. Neergaard-Nielsen +1
Entanglement is central to quantum physics, yet detecting and exploiting it in non-Gaussian systems remains a major challenge. In continuous variable platforms, standard inseparabi…
Distribution of non-Gaussian states in a deployed telecommunication fiber channel
Casper A. Breum, Xueshi Guo, Mikkel V. Larsen +4
Optical non-Gaussian states hold great promise as a pivotal resource for advanced optical quantum information processing and fault-tolerant long-distance quantum communication. Est…
The loss tolerance of cat breeding for fault-tolerant grid state generation
Olga Solodovnikova, Ulrik L. Andersen, Jonas S. Neergaard-Nielsen
The development of a continuous-variable photonic quantum computer depends on the reliable preparation of high-quality Gottesman-Kitaev-Preskill states. The most promising GKP prep…
Fast simulations of continuous-variable circuits using the coherent state decomposition
Olga Solodovnikova, Ulrik L. Andersen, Jonas S. Neergaard-Nielsen
We present \texttt{lcg\_plus}, an open-source Python library for the simulation of continuous-variable quantum circuits with both generaldyne and photon-number-resolving detector c…
General Approach to Error Detection of Bosonic Codes via Phase Estimation
Yuan-De Jin, Shi-Yu Zhang, Ulrik L. Andersen +1
We present a general approach to error detection of bosonic quantum error-correction codes via an adaptive quantum phase estimation algorithm assisted by a single ancilla qubit. Th…
Practical continuous-variable quantum key distribution with squeezed light
Huy Q. Nguyen, Ivan Derkach, Akash nag Oruganti +6
Continuous-variable quantum key distribution (CV-QKD) has gathered significant interest for its potential to achieve high secret key rates and seamless integration with existing op…
Performance analysis of GKP error correction
Frederik K. Marqversen, Janus H. Wesenberg, Nikolaj T. Zinner +1
Quantum error correction is essential for achieving fault-tolerant quantum computing. Gottesman-Kitaev-Preskill (GKP) codes are particularly effective at correcting continuous nois…
Nullifiers of non-Gaussian cluster states through homodyne measurement
Vojtěch Kala, Casper A. Breum, Mikkel V. Larsen +4
In continuous variable optical platforms, large-scale Gaussian cluster states have already been demonstrated, but non-Gaussian resources are essential to achieve universality and f…
Chip-Based 16 GBaud Continuous-Variable Quantum Key Distribution
Adnan A. E. Hajomer, Axl Bomhals, CÉdric Bruynsteen +5
Quantum key distribution (QKD) stands as the most successful application of quantum information science, providing information-theoretic security for key exchange. While it has evo…
Benchmarks for quantum communication via gravity
Kristian Toccacelo, Ulrik Lund Andersen, Jonatan Bohr Brask
We establish limitations and bounds on the transmission of quantum states between gravitationally interacting mechanical oscillators under different models of gravity. This provide…
Quantum learning advantage on a scalable photonic platform
Zheng-Hao Liu, Romain Brunel, Emil E. B. Østergaard +12
Recent advancements in quantum technologies have opened new horizons for exploring the physical world in ways once deemed impossible. Central to these breakthroughs is the concept…
The Octo-Rail Lattice: a four-dimensional cluster state design
Emil E. B. Østergaard, Niklas Budinger, Mikkel V. Larsen +3
Macronode cluster states are promising for fault-tolerant continuous-variable quantum computation, combining gate teleportation via homodyne detection with the Gottesman-Kitaev-Pre…
Coexistence of continuous-variable quantum key distribution and classical data over 120-km fiber
Adnan A. E. Hajomer, Ivan Derkach, Vladyslav C. Usenko +2
Integrating quantum key distribution (QKD) with classical data transmission over the same fiber is crucial for scalable quantum-secured communication. However, noise from classical…
Finite-size security of continuous-variable quantum key distribution with imperfect heterodyne measurement
Adnan A. E. Hajomer, Akash Nag Oruganti, Ivan Derkach +3
Continuous-variable quantum key distribution (CVQKD) using coherent states and heterodyne detection enables secure quantum communication based on technology that has large similari…
Continuous-variable quantum communication
Vladyslav C. Usenko, Antonio Acín, Romain Alléaume +8
Tremendous progress in experimental quantum optics in recent decades has enabled the advent of quantum technologies, one of which is quantum communication. Aimed at novel methods f…