Entangled vector vortex beams

D’Ambrosio, Vincenzo; Carvacho, Gonzalo; Graffitti, Francesco; Vitelli, Chiara; Piccirillo, Bruno; Marrucci, Lorenzo; Sciarrino, Fabio

doi:10.1103/physreva.94.030304

Cited by 84 publications

(56 citation statements)

References 56 publications

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“…On one hand, this single-particle entanglement cannot be used, of course, for proving non-locality, as it regards a single particle in a single spatial region. On the other hand, when preparing a pair of entangled photons in a vector-vortex spatial mode, a two-particle entanglement (similar to what was done in several other experiments on the SAM states alone) can be realized, as shown by D'Ambrosio and coworkers in 2016 [79]. The authors showed that both the intra-system entanglement between each photon SAM and OAM states and the inter-system entanglement between the two photon states are obtained at the same time.…”

Section: Quantum Information With Vector Beamsmentioning

confidence: 53%

Q-plate technology: a progress review [Invited]

Rubano¹,

Cardano²,

Piccirillo³

et al. 2019

J. Opt. Soc. Am. B

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Section: Quantum Information With Vector Beamsmentioning

confidence: 53%

Q-plate technology: a progress review [Invited]

Rubano¹,

Cardano²,

Piccirillo³

et al. 2019

J. Opt. Soc. Am. B

Self Cite

158

100

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“…Due to their distinctive polarization distributions, VV beams have shown unique features, making them appealing for different research purposes, e.g. microscopy [54], optical trapping [55,56], metrology [57,58], nanophotonics [59] and communication [60][61][62][63][64][65][66][67]. Formally, the state |R, (|L, ) describes a photon with uniform right (left) circular polarization carrying of OAM, and a VV beam can be conveniently described by a non-separable superposition of polarization-OAM eigenmodes.…”

Section: Vector Vortex Beam and Hybrid Entanglement Generationmentioning

confidence: 99%

Air-core fiber distribution of hybrid vector vortex-polarization entangled states

et al. 2019

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Entanglement distribution between distant parties is one of the most important and challenging tasks in quantum communication. Distribution of photonic entangled states using optical fiber links is a fundamental building block towards quantum networks. Among the different degrees of freedom, orbital angular momentum (OAM) is one of the most promising due to its natural capability to encode high dimensional quantum states. In this article, we experimentally demonstrate fiber distribution of hybrid polarization-vector vortex entangled photon pairs. To this end, we exploit a recently developed air-core fiber which supports OAM modes. High fidelity distribution of the entangled states is demonstrated by performing quantum state tomography in the polarization-OAM Hilbert space after fiber propagation, and by violations of Bell inequalities and multipartite entanglement tests. The present results open new scenarios for quantum applications where correlated complex states can be transmitted by exploiting the vectorial nature of light.

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“…A convenient way to represent vector vortex beams is through ket states |π, where π refers to the polarization state and represents a photon carrying quanta of orbital angular momentum [38]. Let us consider a Hilbert space spanned by the basis states {|R, +m , |L, −m } where R/L stand for circular right/left polarization states respectively.…”

Section: Q-plate Action In the Vector Vortex Beams Spacementioning

confidence: 99%

Tunable two-photon quantum interference of structured light

D’Ambrosio¹,

Marrucci²,

Carvacho³

et al. 2019

Quantum Information and Measurement (QIM) V: Quantum Technologies

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Structured photons are nowadays an interesting resource in classical and quantum optics due to the richness of properties they show under propagation, focusing and in their interaction with matter. Vectorial modes of light in particular, a class of modes where the polarization varies across the beam profile, have already been used in several areas ranging from microscopy to quantum information. One of the key ingredients needed to exploit the full potential of complex light in quantum domain is the control of quantum interference, a crucial resource in fields like quantum communication, sensing and metrology. Here we report a tunable photon-photon interference between vectorial modes of light. We demonstrate how a properly designed spin-orbit device can be used to control quantum interference between vectorial modes of light by simply adjusting the device parameters and no need of interferometric setups. We believe our result can find applications in fundamental research and quantum technologies based on structured light by providing a new tool to control quantum interference in a compact, efficient and robust way.

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Entangled vector vortex beams

Cited by 84 publications

References 56 publications

Q-plate technology: a progress review [Invited]

Q-plate technology: a progress review [Invited]

Air-core fiber distribution of hybrid vector vortex-polarization entangled states

Tunable two-photon quantum interference of structured light

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