Continuous variable quantum communication with 40 pairs of entangled sideband
arXiv:2507.10104 · doi:10.1007/s11433-025-2746-x
Abstract
Constructing large-scale quantum resources is an important foundation for further improving the efficiency and scalability of quantum communication. Here, we present an efficient extraction and stable control scheme of 40 pairs of entangled sideband modes from the squeezed light by specially designing optical parametric oscillator. Utilizing the low-loss optical frequency comb control technology and the local cross-correlation algorithm, we model and manage the efficient separation process of the entangled sidebands modes facilitated by the optical filtering cavities, a maximum entanglement level of 6.5 dB is achieved. The feasibility of large-capacity quantum dense coding based on these entangled sideband modes is proved experimentally, which is of great significance for optimizing the utilization of quantum resources, thereby contributing to the advancement of large-capacity quantum communication networks and enabling the realization of more secure and efficient quantum communication systems.
9 pages, 6 figures, to be published in SCIENCE CHINA Physics, Mechanics & Astronomy
References in corpus (39)
- Quantum entanglement
- Experimental quantum teleportation
- Quantum information with continuous variables
- Gaussian Quantum Information
- Advances in Quantum Teleportation
- Ultra-Large-Scale Continuous-Variable Cluster States Multiplexed in the Time Domain
- Quantum repeaters: From quantum networks to the quantum internet
- Wavelength-Multiplexed Quantum Networks with Ultrafast Frequency Combs
- Experimental realization of multipartite entanglement of 60 modes of a quantum optical frequency comb
- Time-Domain Multiplexed 2-Dimensional Cluster State: Universal Quantum Computing Platform
- Dense Coding for Continuous Variables
- Teleportation and Dense Coding with Genuine Multipartite Entanglement
- Quantum Dense Coding Exploiting Bright EPR Beam
- Deterministic generation of a two-dimensional cluster state
- Entanglement-based wavelength multiplexed quantum communication network
- Fault-Tolerant Measurement-Based Quantum Computing with Continuous-Variable Cluster States
- Experimental demonstration of tripartite entanglement and controlled dense coding for continuous variables
- Quantum sensing with arbitrary frequency resolution
- A trusted-node-free eight-user metropolitan quantum communication network
- Continuous variable quantum key distribution with two-mode squeezed states
- Parallel generation of quadripartite cluster entanglement in the optical frequency comb
- Coherent control of vacuum squeezing in the Gravitational-Wave Detection Band
- Distributed Quantum Computing across an Optical Network Link
- Distributed quantum dense coding
- Near-Term Quantum Computing Techniques: Variational Quantum Algorithms, Error Mitigation, Circuit Compilation, Benchmarking and Classical Simulation
- Advances in quantum dense coding
- Dense coding with multipartite quantum states
- Rate compatible reconciliation for continuous-variable quantum key distribution using Raptor-like LDPC codes
- Experimental Demonstration of Sequential Multiparty Quantum Secret Sharing and Quantum Conference Key Agreement
- Entanglement-assisted quantum communication with simple measurements
- Generation of squeezed vacuum state in the millihertz frequency band
- Towards Einstein-Podolsky-Rosen quantum channel multiplexing
- A cost-efficient quantum access network with qubit-based synchronization
- Pearson Correlation Coefficient as a measure for Certifying and Quantifying High Dimensional Entanglement
- Distributed quantum dense coding with two receivers in noisy environments
- Exclusion Principle for Quantum Dense Coding
- High-speed quantum radio-frequency-over-light communication
- Practical long-distance quantum communication using concatenated entanglement swapping
- Continuous-variable dense coding via a general Gaussian state: Monogamy relation