Shaping entangled photons through emulated turbulent atmosphere
arXiv:2202.08650 · doi:10.1364/OSAC.431200
Abstract
Scattering by atmospheric turbulence is one of the main challenges in creating long free-space optical links, and specifically links of entangled photons. Classical compensation methods are hard to apply to entangled photons, due to inherently low signal to noise ratios and the fragility of entanglement. We have recently shown that we can use the bright laser beam that pumps spontaneous parametric down conversion to control the spatial correlations between entangled photons for compensating their scattering. In this work, we apply the pump-shaping technique to compensate for scrambling of correlations between entangled photons that scatter by emulated atmospheric turbulence. We use a spatial light modulator and Kolmogorov's turbulence model to emulate atmospheric turbulence in the lab, and enhance the entangled photons' signal by a factor of fifteen using pump optimization. We show this for both static and dynamic emulated atmosphere, and demonstrate also the compensation of the scattering of a higher-order mode. Our results can open the door towards realizing free-space quantum links with entangled photons, used in applications such as quantum key distribution.
References in corpus (29)
- Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
- Photonic quantum technologies
- Satellite-to-ground quantum key distribution
- Security of quantum key distribution using d-level systems
- High-dimensional quantum cryptography with twisted light
- Twisted Photons: New Quantum Perspectives in High Dimensions
- Advances in High Dimensional Quantum Entanglement
- Phase control algorithms for focusing light through turbid media
- Quantum Cryptography using larger alphabets
- Sending-or-Not-Sending with Independent Lasers: Secure Twin-Field Quantum Key Distribution Over 509 km
- Influence of Atmospheric Turbulence on Optical Communications using Orbital Angular Momentum for Encoding
- Quantum key distribution with higher-order alphabets using spatially-encoded qudits
- Overcoming Noise in Entanglement Distribution
- Two-photon quantum walk in a multimode fiber
- High-dimensional quantum gates using full-field spatial modes of photons
- Wavefront shaping in complex media at 350 KHz with a 1D-to-2D transform
- Shaping the waveform of entangled photons
- Unscrambling Entanglement through a Complex Medium
- Programmable linear quantum networks with a multimode fibre
- Adaptive Quantum Optics with Spatially Entangled Photon Pairs
- Quantum state engineering with twisted photons via adaptive shaping of the pump beam
- Programmable two-photon quantum interference in channels in opaque scattering media
- Shape of the spatial mode function of photons generated in noncollinear spontaneous parametric downconversion
- Real-time shaping of entangled photons by classical control and feedback
- Spatially-entangled Photon-pairs Generation Using Partial Spatially Coherent Pump Beam
- The influence of pump coherence on the generation of position-momentum entanglement in down-conversion
- Single-photon entanglement generation by wavefront shaping in a multiple-scattering medium
- Spatially entangled Airy photons
- Pump-shaping of non-collinear and non-degenerate entangled photons
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