Toward Global Quantum Communication: Beam Wandering Preserves Nonclassicality
arXiv:1110.1440 · doi:10.1103/PhysRevLett.108.220501
Abstract
Tap-proof long-distance quantum communication requires a deep understanding of the strong losses in transmission channels. Here we provide a rigorous treatment of the effects of beam wandering, one of the leading disturbances in atmospheric channels, on the quantum properties of light. From first principles we derive the probability distribution of the beam transmissivity, with the aim to completely characterize the quantum state of light. It turns out that beam wandering may preserve nonclassical effects, such as entanglement, quadrature and photon number squeezing, much better than a standard attenuating channel of the same losses.
published version
References in corpus (9)
- Free-Space distribution of entanglement and single photons over 144 km
- High-fidelity transmission of entanglement over a high-loss freespace channel
- Experimental entanglement distillation of mesoscopic quantum states
- Reflective Ghost Imaging through Turbulence
- Quantum light in the turbulent atmosphere
- Feasibility of free space quantum key distribution with coherent polarization states
- Beam Wandering in the Atmosphere: The Effect of Partial Coherence
- Distribution of Time-Energy Entanglement over 100 km fiber using superconducting single-photon detectors
- Homodyne detection for atmosphere channels
Cited by in corpus (62)
- A comprehensive design and performance analysis of LEO satellite quantum communication
- Atmospheric Quantum Channels with Weak and Strong Turbulence
- Satellite-Based Continuous-Variable Quantum Communications: State-of-the-Art and a Predictive Outlook
- The Evolution of Quantum Secure Direct Communication: On the Road to the Qinternet
- Limits and Security of Free-Space Quantum Communications
- Satellite Quantum Communications: Fundamental Bounds and Practical Security
- Entanglement of Gaussian states and the applicability to quantum key distribution over fading channels
- Feasibility of satellite-to-ground continuous-variable quantum key distribution
- Satellite-mediated quantum atmospheric links
- Composable security for continuous variable quantum key distribution: Trust levels and practical key rates in wired and wireless networks
- Free-space quantum links under diverse weather conditions
- Studying Free-Space Transmission Statistics and Improving Free-Space QKD in the Turbulent Atmosphere
- Squeezing-enhanced quantum key distribution over atmospheric channels
- Fading channel estimation for free-space continuous-variable secure quantum communication
- Satellite-based entanglement distribution and quantum teleportation with continuous variables
- Theory of atmospheric quantum channels based on the law of total probability
- Gaussian Entanglement Distribution via Satellite
- Composable finite-size effects in free-space CV-QKD systems
- Gaussian entanglement in the turbulent atmosphere
- Analysis of satellite-to-ground quantum key distribution with adaptive optics
- Stabilization of transmittance fluctuations caused by beam wandering in continuous-variable quantum communication over free-space atmospheric channels
- Continuous-Variable Measurement-Device-Independent Quantum Key Distribution in Free-Space Channels
- Cancellation of atmospheric turbulence effects in entangled two-photon beams
- Entanglement and phase properties of noisy N00N states
- Applicability of Squeezed-and Coherent-State Continuous-Variable Quantum Key Distribution over Satellite Links
- Inter-satellite Quantum Key Distribution at Terahertz Frequencies
- Probing free-space quantum channels with laboratory-based experiments
- Direct calibration of click-counting detectors
- Entanglement Generation via Non-Gaussian Transfer over Atmospheric Fading Channels
- GammaCHI: a package for the inversion and computation of the gamma and chi-square cumulative distribution functions (central and noncentral)
- Lindblad equation for the decay of entanglement due to atmospheric scintillation
- Higher-order nonclassical effects in fluctuating-loss channels
- Bell nonlocality in the turbulent atmosphere
- Quantum teleportation through atmospheric channels
- Generating continuous variable entangled states for quantum teleportation using a superposition of number-conserving operations
- CV-QKD with Gaussian and non-Gaussian Entangled States over Satellite-based Channels
- Simple and loss-tolerant free-space QKD using a squeezed laser
- Connecting Quantum Cities: Simulation of a Satellite-Based Quantum Network
- Multipartite entangled light from driven microcavities
- Numerical simulations of atmospheric quantum channels
- Correlations of photon trajectories in the problem of light scintillations
- Analysis for satellite-based high-dimensional extended B92 and high-dimensional BB84 quantum key distribution
- Entanglement verification of noisy N00N states
- Quantum Key Distribution over Combined Atmospheric Fading Channels
- CV-MDI Quantum Key Distribution via Satellite
- Quantum Communications via Satellite with Photon Subtraction
- Discrete-Modulated Continuous-Variable Quantum Key Distribution in Satellite-to-Ground Communication
- Characterization of free-space quantum channels
- Reinforcement-learning calibration of coherent-state receivers on variable-loss optical channels
- Fourth-order moment of the light field in atmosphere
- Modeling Optical Key Distribution over a Satellite-to-Ground Link Under Weak Atmospheric Turbulence
- Long-distance free-space quantum key distribution with continuous variables
- Satellite-based communication for phase-matching measurement-device-independent quantum key distribution
- Time correlations in atmospheric quantum channels
- Enhanced squeezing by absorption
- Turbulence-induced optical loss and cross-talk in spatial mode multiplexed or single-mode free-space communication channels
- Teleportation of a Schrödinger's-Cat State via Satellite-based Quantum Communications
- Entanglement distribution via satellite: an evaluation of competing protocols assuming realistic free-space optical channels
- Contributions to free-space optical communications: feasibility of utilizing Cherenkov telescopes as receivers and beam-wander correction in quantum communications
- Nonclassicality and Bell nonlocality in atmospheric links
- Effect of noisy channels on the transmission of mesoscopic twin-beam states
- Circular-beam approximation for quantum channels in a turbulent atmosphere