High-dimensional maximally entangled photon pairs in parametric down-conversion
arXiv:2407.09280 · doi:10.1103/PhysRevA.110.033718
Abstract
Photon pairs generated from spontaneous parametric down-conversion are a well-established method to realize entangled bipartite photonic systems. Laguerre-Gaussian modes, which carry orbital angular momentum (OAM), are commonly exploited to engineer high-dimensional entangled quantum states. %experimentally. For Hilbert spaces with dimension d>2, maximally entangled states (MESs) help to improve the capacity and security of quantum communication protocols, among several other promising features. However, the direct generation of MES in well-defined high-dimensional subspaces of the infinite OAM basis has remained a challenge. Here, we formalize how the spatial distribution of the pump beam and the nonlinear profile of the crystal can be simultaneously utilized to generate MES without additional spatial filtering of OAM modes within a subspace. We illustrate our approach with maximally entangled qutrits (d=3) and ququints (d=5).
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References in corpus (54)
- Entanglement of Orbital Angular Momentum States of Photons
- Quantum computational advantage using photons
- Security of quantum key distribution using d-level systems
- Quantum Entanglement of High Angular Momenta
- Experimental high-dimensional two-photon entanglement and violations of generalised Bell inequalities
- Advances in High Dimensional Quantum Entanglement
- Laguerre-Gaussian mode sorter
- High-Dimensional Intra-City Quantum Cryptography with Structured Photons
- Qudits and high-dimensional quantum computing
- Quantum Cryptography using larger alphabets
- Experimental Quantum Cryptography with Qutrits
- Imaging with quantum states of light
- Spatial correlations in parametric down-conversion
- Higher-dimensional orbital angular momentum based quantum key distribution with mutually unbiased bases
- Generation and Confirmation of a (100x100)-dimensional entangled Quantum System
- Quantum entanglement of angular momentum states with quantum numbers up to 10010
- Advances in Space Quantum Communications
- Quantum key distribution with higher-order alphabets using spatially-encoded qudits
- High efficiency entangled photon pair collection in type II parametric fluorescence
- Quantum spiral bandwidth of entangled two-photon states
- Discrete, Tunable Color Entanglement
- Twisted photon entanglement through turbulent air across Vienna
- Quantum-optical state engineering up to the two-photon level
- Orbital angular momentum of photons and the entanglement of Laguerre-Gaussian modes
- Quantifying photonic high-dimensional entanglement
- Qutrit state engineering with biphotons
- Entangled Photon-Pair Sources based on three-wave mixing in bulk crystals
- Entanglement and conservation of orbital angular momentum in spontaneous parametric down-conversion
- Engineered optical nonlinearity for a quantum light source
- Full-field quantum correlations of spatially entangled photons
- Demonstration of coherent time-frequency Schmidt mode selection using dispersion-engineered frequency conversion
- Shaping frequency entangled qudits
- Coherent ultrafast measurement of time-bin encoded photons
- Shaping the joint spectrum of down-converted photons through optimized custom poling
- Independent high-purity photons created in domain-engineered crystals
- Experimental realization of a minimal disturbance quantum measurement
- Generation of the Complete Four-dimensional Bell Basis
- Quantum state engineering with twisted photons via adaptive shaping of the pump beam
- Full analysis of multi-photon pair effects in spontaneous parametric down conversion based photonic quantum information processing
- Pure down-conversion photons through sub-coherence length domain engineering
- Spectral decomposition of entangled photons with an arbitrary pump
- Coherent manipulation of a three-dimensional maximally entangled state
- Realization of a multi-output quantum pulse gate for decoding high-dimensional temporal modes of single-photon states
- Experimental High-Dimensional Entanglement by Path Identity
- Schmidt modes generated in parametric downconversion
- Quantum nondemolition measurements with optical parametric amplifiers for ultrafast universal quantum information processing
- Near-perfect measuring of full-field transverse-spatial modes of light
- Increasing two-photon entangled dimensions by shaping input beam profiles
- Optomechanical Detection of Light with Orbital Angular Momentum
- Wave Function Engineering for Spectrally-Uncorrelated Biphotons in the Telecommunication Band based on a Machine-Learning Framework
- Generalized description of the spatio-temporal biphoton State in spontaneous parametric down-conversion
- Spectral Properties of Transverse Laguerre-Gauss Modes in Parametric Down-Conversion
- A Compact Orbital Angular Momentum Spectrometer Using Quantum Zeno Interrogation
- Spatial and temporal characteristics of spontaneous parametric down-conversion with varying focal planes of interacting beams