Anonymous broadcasting of classical information with a continuous-variable topological quantum code

Abstract

Broadcasting information anonymously becomes more difficult as surveillance technology improves, but remarkably, quantum protocols exist that enable provably traceless broadcasting. The difficulty is making scalable entangled resource states that are robust to errors. We propose an anonymous broadcasting protocol that uses a continuous-variable surface-code state that can be produced using current technology. High squeezing enables large transmission bandwidth and strong anonymity, and the topological nature of the state enables local error mitigation.

(v4) added references, modified figures for clarity (23 pages, 9 figures)

References in corpus (15)

• Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
• Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
• Detection of 15 dB Squeezed States of Light and their Application for the Absolute Calibration of Photoelectric Quantum Efficiency
• Amplification and squeezing of quantum noise with a tunable Josephson metamaterial
• One-Way Quantum Computing in the Optical Frequency Comb
• Bipartite entanglement and entropic boundary law in lattice spin systems
• Generating Entangled Microwave Radiation Over Two Transmission Lines
• Generation of one-million-mode continuous-variable cluster state by unlimited time-domain multiplexing
• Graphical calculus for Gaussian pure states
• Squeezing and quantum state engineering with Josephson traveling wave amplifiers
• Generation of squeezed states of microwave radiation in a superconducting resonant circuit
• Qudit surface codes and gauge theory with finite cyclic groups
• The Optical Frequency Comb as a One-Way Quantum Computer
• Perfect mirror transport protocol with higher dimensional quantum chains
• Anyonic statistics with continuous variables

Cited by in corpus (7)

• Quantum-Computing Architecture based on Large-Scale Multi-Dimensional Continuous-Variable Cluster States in a Scalable Photonic Platform
• Temporal-mode continuous-variable 3-dimensional cluster state for topologically-protected measurement-based quantum computation
• Versatile photonic entanglement synthesizer in the spatial domain
• Client-friendly continuous-variable blind and verifiable quantum computing
• Topological error correction with a Gaussian cluster state
• Anonymous estimation of intensity distribution of magnetic fields with quantum sensing network
• Anonymous communication protocol over quantum networks