Experimentally observed decay of higher-dimensional entanglement through turbulence

Abstract

The evolution of high dimensional entanglement in atmospheric turbulence is investigated. We study the effects of turbulence on photonic states generated by spontaneous parametric down-conversion, both theoretically and experimentally. One of the photons propagates through turbulence, while the other is left undisturbed. The atmospheric turbulence is simulated by a single phase screen based on the Kolmogorov theory of turbulence. The output after turbulence is projected into a three-dimensional (qutrit) basis composed of specific Laguerre-Gaussian modes. A full state tomography is performed to determine the density matrix for each output quantum state. These density matrices are used to determine the amount of entanglement, quantified in terms of the negativity, as a function of the scintillation strength. Theoretically, the entanglement is calculated using a single phase screen approximation. We obtain good agreement between theory and experiment.

8 pages, 4 figures

References in corpus (9)

• Influence of Atmospheric Turbulence on Optical Communications using Orbital Angular Momentum for Encoding
• Twisted photon entanglement through turbulent air across Vienna
• A Factorization Law for Entanglement Decay
• Impact of turbulence in long range quantum and classical communications
• The effect of atmospheric turbulence on entangled orbital angular momentum states
• Two-photon wave mechanics
• Infinitesimal propagation equation for decoherence of an OAM entangled biphoton in atmospheric turbulence
• Entanglement evolution in finite dimensions
• Lindblad equation for the decay of entanglement due to atmospheric scintillation

Cited by in corpus (22)

• Structured Light in Turbulence
• Entangled Photon-Pair Sources based on three-wave mixing in bulk crystals
• Robust structured light in atmospheric turbulence
• Self-healing high-dimensional quantum key distribution using hybrid spin-orbit Bessel states
• The orbital angular momentum of a turbulent atmosphere and its impact on propagating structured light fields
• Performance of real-time adaptive optics compensation in a turbulent channel with high-dimensional spatial-mode encoding
• Entanglement protection of high-dimensional states by adaptive optics
• Near-perfect measuring of full-field transverse-spatial modes of light
• Phenomenology of complex structured light in turbulent air
• Probing free-space quantum channels with laboratory-based experiments
• Influence of coincidence detection through free-space atmospheric turbulence using partial spatial coherence
• Optical orbital angular momentum under strong scintillation
• Experimental Study of the Generalized Jarzysnki's Fluctuation Relation Using Entangled Photons
• Bell nonlocality in the turbulent atmosphere
• Combining spatio-temporal and particle-number degrees of freedom
• High-dimensional quantum channel estimation using classical light
• Universal entanglement decay of photonic orbital angular momentum qubit states in atmospheric turbulence: an analytical treatment
• Quantum channel correction with twisted light using compressive sensing
• Selective tuning of Hilbert spaces in states encoded with spatial modes of light
• Evolution equation for multi-photon states in turbulence
• Mode analysis of higher-order transverse-mode correlation beams in turbulent atmosphere
• Experimental certification of ensembles of high-dimensional quantum states with independent quantum devices