#Biphotons
📰 JEOS-RP Editor’s Pick 📰

"The influence of temperature for the single-cycle biphotons generated by type-II SPDC in chirp QPM PPLN"

📖 Authors: Haibo Lin and Jinbao Wang
🔗 Read the full article here: doi.org/10.1051/jeos...

#JEOSRP #Biphotons #SPDC #SingleCycle #Entanglement
October 1, 2026 at 6:59 AM
Les chercheurs démontrent un processeur de fréquences quantiques entièrement intégré combinant des sources de biphotons, un contrôle spectral et une intrication de haute dimension sur une puce en silicium de 4×7mm avec des portes de fidélité >99,9% — avançant les processeurs q...
Puce Photonique en Silicium Monolithique Intègre les Éléments de Traitement des Fréquences Quantiques
iq.fp2.dev
September 15, 2026 at 2:03 PM
Un atome unique à proximité d'un guide d'ondes chiral génère efficacement des paires de biphotons à des taux dépassant les 10 000/seconde, rivalisant avec les ensembles atomiques en masse avec une implémentation photonique intégrée compacte et un fonctionnement à faibles pertes.
Génération de Biphotons par un Atome Unique dans des Guides d'Ondes Chiraux pour des Sources de Lumière Quantique Intégrée
iq.fp2.dev
September 1, 2026 at 9:07 AM
Le filtrage spectral permet un contrôle dynamique des corrélations spatiales de biphotons pour l'imagerie quantique. En combinant la largeur de bande du filtre avec la longueur du cristal, les chercheurs obtiennent une amélioration de la résolution d'environ 12% dans les confi...
Contrôle par filtrage spectral des corrélations spatiales de biphotons en imagerie quantique
iq.fp2.dev
August 18, 2026 at 11:19 AM
Les chercheurs démontrent que la phase de Gouy quantique génère des singularités de phase non-locales dans les paires de photons intriqués se propageant sur des distances indépendantes, permettant le contrôle topologique de la lumière quantique structurée avec des implications...
Singularités de Phase de Gouy Quantique dans les États de Biphotons en Propagation
iq.fp2.dev
August 11, 2026 at 7:47 AM
Introduit g(2)_pairs, une fonction de corrélation au niveau des paires sondant directement les statistiques des biphotons. L'antibunching des paires (g(2)_pairs<1) est classiquement interdit et certifie la non-classicalité, mesurable via la détection de coïncidence standard sa...
L'Antibunching des Paires de Photons comme Témoin de la Non-Classicalité Quantique
iq.fp2.dev
July 28, 2026 at 3:12 AM
La Cavity-QED monoatomique réalise un contrôle cohérent des biphotons via les états sombres de Rydberg. À la résonance à deux photons, les corrélations quantiques entre les photons Stokes et anti-Stokes deviennent hautement accordables. Des compromis existent entre la luminosi...
Contrôle Cohérent Médié par États Sombres de la Génération de Biphotons en Cavity-QED Monoatomique
arxiv.org
June 30, 2026 at 6:34 AM
Démontre que l'interférence photonique est fondamentalement gouvernée par la phase relative entre l'état quantique préparé et la base de mesure du détecteur. Utilise des sources de biphotons cohérentes pour contrôler indépendamment la préparation de l'état et la mesure, permet...
Contrôle défini par la mesure de l'interférence quantique d'une seule particule
iq.fp2.dev
April 21, 2026 at 6:42 AM
Researchers achieved ~79.4% efficient telecom conversion of atomic biphotons using diamond-type FWM in cold Rb ensembles, preserving temporal waveforms and nonclassical correlations—enabling practical atomic-to-fiber quantum network interfaces.

#QuantumNetworking #QuantumPhotonics #Research
Quantum-Preserving Telecom Frequency Conversion of Atomic Biphotons
iq.fp2.dev
March 28, 2026 at 12:36 PM
ScAlN/GaN quantum wells paired with inverse-designed dielectric metasurfaces achieve >10¹⁰ biphotons/s in the telecom band from a 0.5μm-thick structure via SPDC, with 4 orders-of-magnitude modal overlap improvement over standard gratings.

#QuantumPhotonics #EntangledPhotons #Research
Entangled Photon Generation at Telecom Wavelengths via ScAlN/GaN Metasurface Integration
iq.fp2.dev
March 18, 2026 at 2:44 AM
Ling-Chun Chen, Chang-Wei Lin, Jiun-Shiuan Shiu, Wei-Lin Chen, Yi-Che Wang, Yong-Fan Chen: Quantum-preserving telecom conversion of atomic biphotons https://arxiv.org/abs/2603.09824 https://arxiv.org/pdf/2603.09824 https://arxiv.org/html/2603.09824
March 11, 2026 at 6:50 AM
Quantum-preserving telecom conversion of atomic biphotons
https://arxiv.org/pdf/2603.09824
Ling-Chun Chen, Chang-Wei Lin, Jiun-Shiuan Shiu, Wei-Lin Chen, Yi-Che Wang, Yong-Fan Chen.
https://arxiv.org/abs/2603.09824
arXiv abstract link
arxiv.org
March 11, 2026 at 4:35 AM
Atomic Biphotons Demonstrate OAM-to-Polarization Mapping with 99% Fidelity and Clauser-Horne-Shimony-Holt Parameter of 2.7

Read more:
https://quantumzeitgeist.com/99-percent-fidelity-atomic-biphotons-oam-polarization-mapping-clauser-horne-shimony/
Atomic Biphotons Demonstrate OAM-to-Polarization Mapping With 99% Fidelity And Clauser-Horne-Shimony-Holt Parameter Of 2.7
Scientists successfully transfer entanglement from the orbital angular momentum of light to its polarization using a cold-atom system, achieving high-fidelity generation of entangled photon pairs and paving the way for compatibility with existing polarization-based quantum networks.
quantumzeitgeist.com
December 15, 2025 at 8:34 PM
Chang-Wei Lin, Yi-Ting Ma, Jiun-Shiuan Shiu, Yong-Fan Chen
Polarization Entanglement in Atomic Biphotons via OAM-to-Spin Mapping
https://arxiv.org/abs/2512.11625
December 15, 2025 at 7:09 AM
Chang-Wei Lin, Yi-Ting Ma, Jiun-Shiuan Shiu, Yong-Fan Chen: Polarization Entanglement in Atomic Biphotons via OAM-to-Spin Mapping https://arxiv.org/abs/2512.11625 https://arxiv.org/pdf/2512.11625 https://arxiv.org/html/2512.11625
December 15, 2025 at 6:50 AM
Quantum Adaptive Imaging via Biphoton Wavefront Sensing

In a groundbreaking leap for quantum imaging technology, researchers have unveiled a novel method known as position-correlated biphoton wavefront sensing, promising to redefine the boundaries of adaptive optical systems. This cutting-edge…
Quantum Adaptive Imaging via Biphoton Wavefront Sensing
In a groundbreaking leap for quantum imaging technology, researchers have unveiled a novel method known as position-correlated biphoton wavefront sensing, promising to redefine the boundaries of adaptive optical systems. This cutting-edge approach utilizes the quantum entanglement of photon pairs—biphotons—to probe and reconstruct wavefronts with unprecedented precision, potentially revolutionizing fields ranging from microscopy to astronomical observation. The study, spearheaded by Zheng, Liu, Tang, and colleagues, emerges at a pivotal moment when the convergence of quantum physics and optical engineering holds transformative promise.
scienmag.com
September 9, 2025 at 4:11 PM
Journals | JEOS-RP
#NewArticle #OpenAccess

“The temperature-dependent in noncollinear SPDC for generating biphotons with single cycles”
✍️Haibo Lin et al. from Taizhou Vocational & Technical College, China
Read more ➡️ bit.ly/3JwBx4N

#EOS #EuropeanOpticalSociety
@europeanoptics.bsky.social
August 29, 2025 at 7:05 AM
aberration correction has been achieved by using classical beams to detect the aberration source or scanning the correction phase on biphotons if the source is unreachable. Here, we introduce position-correlated biphoton Shack-Hartmann wavefront [2/5 of https://arxiv.org/abs/2504.21573v1]
May 1, 2025 at 6:18 AM
frequency-entangled biphotons, and find close agreement with experimental observations in empty microcavities. Our results reveal the emergence of off-diagonal spectral correlations that can be interpreted as irreversible decay of cavity excitations [4/5 of https://arxiv.org/abs/2504.14086v1]
April 22, 2025 at 6:16 AM
arXiv:2504.04680v1 Announce Type: new
Abstract: In a recent article [Phys. Rev. Lett. 133, 033601 (2024)], the coherence time of degenerate entangled photon pairs (biphotons) generated via backward spontaneous four-wave mixing in a cold atomic [1/4 of https://arxiv.org/abs/2504.04680v1]
April 8, 2025 at 6:19 AM
counts of biphotons. Our noise-resistance CPI may enable laboratory-based quantum imaging to be applied to real-world applications with the highly desired suppression of strong background noise and stray light. [7/7 of https://arxiv.org/abs/2503.12384v1]
March 18, 2025 at 6:14 AM
when using a focused gaussian pump beam as input, and collecting the output biphotons in a pair of focused gaussian collection modes. We do this to both show consistency between our formalism and his treatment, and to be [3/8 of https://arxiv.org/abs/2503.02062v1]
March 5, 2025 at 6:15 AM
coherent biphotons increases with the decreases in the transverse coherence length. This results in a biphoton beam exhibiting multiple spatial modes, making it more suitable for studying the non-local features of quantum [4/7 of https://arxiv.org/abs/2503.00983v1]
March 4, 2025 at 6:27 AM
Jiho Noh, Tom\'as Santiago-Cruz, Chloe F. Doiron, Hyunseung Jung, Jaeyeon Yu, Sadhvikas J. Addamane, Maria V. Chekhova, Igal Brener
Two-photon Interference of Biphotons Emitted by Overlapping Resonances in Metasurfaces
https://arxiv.org/abs/2501.11850
January 22, 2025 at 9:09 AM