Phase-Enhanced Excitations in Pumped Collective Nuclear Systems

Two-field pumped Mössbauer nuclei in cavities exhibit phase-enhanced excitations with cross-correlated decay channels, producing sub- and super-Poissonian statistics for x-ray quantum optics.

#QuantumOptics #NuclearPhysics #Research

High-Repetition-Rate Homodyne Detector Achieves 14dB Signal-to-Noise at 100MHz

Researchers demonstrated a balanced homodyne detector operating at 100MHz with 14dB SNR, overcoming previous 82MHz stability limits through direct photocurrent amplification—advancing quantum optics & continuous-variable quantum information processing.

#QuantumOptics #HomodyneDetection #News

Reminder - MSc Position in Experimental Optical Quantum Computing (Stellenbosch University).
- Full bursary for 1 year (renewable)
- Apply by 15 April 2026
buff.ly/cQA0i5R

#QuantumComputing #QuantumOptics #PhysicsCareers #MScBursary #PostgraduateStudy #ResearchOpportunity

Artificial-Atom Arrays in Moiré Superlattices for Quantum Optics

Moiré superlattices proposed as a scalable solid-state quantum optics platform: arrays of near-identical artificial-atom emitters with tunable spacing & broad spectral coverage overcome quantum dot uniformity barriers for single-photon applications.

#QuantumOptics #MoireSuperlattices #Research

Quantum Sensing with Joint Emitter-Fluorescence Measurements

Joint quantum measurements on a harmonic emitter and its resonance fluorescence reconstruct the full quantum noise matrix of a driving field, providing null tests of classicality applicable to optical, acoustic, and gravitational sensing.

#QuantumSensing #ResonanceFluorescence #QuantumOptics

Coherent Feedback H∞ Control of Quantum Linear Systems via Lyapunov Equations

New method replaces two coupled algebraic Riccati equations with at most four Lyapunov equations for H∞ controller synthesis in quantum linear systems, validated on optical cavity and degenerate parametric amplifier.

#QuantumControl #QuantumOptics #Research

GKSL vs Dressed-Picture Master Equations in the Ultrastrong Coupling Quantum Rabi Model

Numerical comparison of GKSL and dressed-picture master equations in the ultrastrong-coupling Rabi model reveals regime-dependent discrepancies in entanglement, purity, and photon statistics across coherent, cat, squeezed, and thermal states.

#QuantumOptics #UltrastrongCoupling #Research

Thermal Light Statistics in Independent Two-Level Emitter Ensembles

Derives two conditions for cold atomic ensembles to emit thermal (Gaussian) light: a finite-N condition on correlation order and a spin-coherence condition on coherent-to-incoherent emission ratio. Deviations reveal the quantum nature of two-level emitters.

#QuantumOptics #QuantumLight #Research

🚀 MSc Position in Experimental Optical Quantum Computing (Stellenbosch University)
🎓 Full bursary for 1 year (renewable)
📍 Stellenbosch University
📅 Apply by 15 April 2026
buff.ly/cQA0i5R

#QuantumComputing #QuantumOptics #PhysicsCareers #STEMOpportunities #PostgraduateStudy #ResearchOpportunity

Photon Localization in Crystalline VO₂ via Ultrafast Electron Diffraction

Researchers at Universität Konstanz demonstrated that coherent laser light is absorbed as individual localized photons—not as an EM wave—in single-crystal VO₂, triggering nanometer-scale phase transitions below the bulk energy threshold.

#QuantumOptics #PhotonLocalization #Research

Photon-Triplet Generation via Phase-Matched Third-Order Difference-Frequency Mixing in KTP Crystal

Photon-triplets generated via third-order DFM in a KTP crystal, achieving 11.6 triplets/s. A semiclassical model incorporating vacuum quantum fluctuations outperforms a full quantum model, paving the way for entanglement and squeezing experiments.

#QuantumOptics #PhotonicQuantum #Research

Waveguide QED Photon Statistics: Exact Thermodynamic Limit Solutions

Exact analytical solutions derived for photon statistics in waveguide QED (N→∞, fixed optical depth). Shows exponentially enhanced superradiance before t≈1.59τ, followed by subradiance, with second-order coherence requiring finite-size effects to emerge.

#WaveguideQED #Superradiance #QuantumOptics

Single-Frequency Asymptotics for Maxwell-Bloch Equations: Pure States

Mathematicians construct rigorous single-frequency asymptotic solutions to the Maxwell-Bloch laser equations using Hopf reduction, averaging theory on manifolds, and harmonic state stability analysis—shedding light on coherent laser radiation mechanisms.

#QuantumOptics #LaserPhysics #Research

Resonance Fluorescence Spectrum of a Three-Level Quantum Dot-Cavity System Under Incoherent Pumping

Numerical study of a Vee-type three-level quantum dot in a microcavity shows how quantum interference parameter β and incoherent pumping reshape the Mollow triplet spectrum, enabling tunable single-photon emission for quantum communication.

#QuantumOptics #SinglePhotonSource #Research

Schrödinger Cat States via Second Harmonic Generation Under Strong Pump Depletion

Pump fields in second-harmonic generation develop Schrödinger cat-like nonclassical states under deep depletion, driven by vacuum-induced phase instability. Wigner negativity confirmed for ⟨n⟩≤100; classical trajectory method extends analysis to ⟨n⟩=10⁷.

#QuantumOptics #SchrödingerCat #Research

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Quantum Optics For Engineers 2nd Edition By F J Duarte Ultimate 2025 2026 Study Guide To Ace Your Exams
#QuantumOptics #Engineers #StudyGuide #studyguide #testbank #testbankexams #testbank2025 #hackedexams

Applications are open for the Summer School: “New Frontiers in Ultrafast Quantum Optics”
📍 Lake Como, July 27–31, 2026
🎓40 participants
💰Two full-fee Student Grants available
📅 Deadline for applications: 31 May 2026

👉 ufqp.lakecomoschool.org

#QuantumOptics #UltrafastOptics #AttosecondScience

Frequency-Resolved N-Photon Correlations in Ultra-Strong Cavity QED Coupling

Ultrastrongly coupled cavity QED reveals multiphoton antibunching and bunching via cascade transitions between dressed eigenstates. Parity symmetry-breaking opens new transition channels, dramatically enhancing correlated photon pair and triplet generation.

#QuantumOptics #CavityQED #Research

Non-Gaussian Continuous Measurements Enable Near-Optimal Coherent State Discrimination

Two protocols using non-Gaussian measurements surpass the Gaussian homodyne limit for binary coherent state discrimination, approaching the Helstrom bound at low energies without requiring photon detection.

#QuantumOptics #QuantumCommunication #News

Hyper-Entangled SU(1,1) Interferometer Achieves Sub-Shot-Noise Birefringence Sensing

Bar-Ilan University researchers demonstrate a hyper-entangled SU(1,1) interferometer for birefringence sensing, achieving 3–15dB sensitivity gain beyond the classical shot-noise limit using standard detectors — no cryogenics or complex quantum control required.

#QuantumSensing #QuantumOptics #News

Experimental setup for high-precision measurements on the hydrogen atom (photo/©: Vitaly Wirthl, MPQ)

#StandardModel of #ParticlePhysics verified to one trillionth accuracy: Experiments with hydrogen confirm fundamental #QuantumTheory up to the 13th decimal place and solve proton radius puzzle 👉 prisma.uni-mainz.de/en/2026/03/11…

#QuantumOptics #physics #ClusterOfExcellencePRISMA

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Master Quantum Optics 2025 2026 Study Guide For Introductory Quantum Optics 2nd Edition By Christopher C Gerry Peter L Knight Ace Your Exams First Try
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The QnanoOptics team enjoying a short break during Nanolight 2026 in Benasque.

Great talks, great science, and great company in the Pyrenees!

#NanoLight2026 #Nanophotonics #QuantumOptics #ResearchLife

Registration is now OPEN!

School on "Ultrafast phenomena in Chemistry: Laser-matter interactions at the femto- and atto-second time scales"

🔗 Register here: www.cecam.org/workshop-det...

#Attoscience #UltrafastChemistry #LaserPhysics #QuantumOptics #LUMES #AttosecondScience

What Is the “Dark Photon” Theory of Light and Does It Upend Quantum Mechanics? The “dark photon” theory of light, as described in recent viral posts, is not a new particle and it does not overturn quantum mechanics. It is a way of describing interference by decomposing a photon’s quantum state into bright (detectable) and dark (undetectable) modes, a standard idea in quantum optics. This reinterpretation leaves Maxwell’s equations and quantum electrodynamics intact and makes the same experimental predictions as the usual wave–particle picture.

Seen the viral “dark photon” claims? We unpack what they get wrong, how the double-slit really works, and why quantum mechanics isn’t overturned. Quick, clear myth-busting. #DarkPhoton #DoubleSlitExperiment #QuantumMechanics #QuantumOptics #WaveParticleDuality

Rewriting Quantum Optics: Scientists Engineer Photons in Space and Time Researchers demonstrate that by shaping the spatial and temporal structure of photons, they can engineer customized quantum states suited for next-generation communication, sensing, and imaging technologies....

Rewriting Quantum Optics: Scientists Engineer Photons in Space and Time #Science #Physics #QuantumPhysics #QuantumOptics #Photonics #Innovation

L'effet Faraday est-il erroné? 180 ans après sa formulation, des chercheurs révèlent une nouvelle facette de la lumière Il était acquis depuis 180 ans que l'effet Faraday dépendait seulement de la partie électrique de la lumière, mais une équipe israélienne vient tout juste de bousculer cette vieille hypothèse en montrant que le champ magnétique est tout aussi important.

La lumière cache un secret magnétique : le champ magnétique de la lumière influencerait la matière. Mais... l’Effet Faraday mériterait peut-être d’être réécrit. www.geo.fr/sciences/l-e... #Space #Science #Astrophysics #FaradayRevisité #QuantumOptics

The title and abstract of the paper (screenshot from Arxiv) with large red word "Preprint" written over

Here it is!

arxiv.org/abs/2512.05630

In this paper, we show unexpected emergence of the spin liquids in arrays of Rydberg atoms coupled to a single cavity mode.

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#quantum #physics #ColdAtoms #ultracold #QuantumOptics #CondMat #CondensedMatter #QuantumSimulation

On the left: Picture of atom array (balls denoting atoms arranged in a regular grid, wavy arrows denoting photons in between of some pairs of balls). Labels: "Atom arrays", "Quantum optics", "Paradigms of understanding many-body effects in arrays" On the right Picture of topologically distinct objects: a flattened ball, a torus, a double and triple torus. Labels "Topological order", "Condensed matter physics", "New platform for topological order". Arrows go from left to right and from right to left

Hi! We are a theoretical physics research project in ICFO, Barcelona, which tries to find a way to use atoms and light (especially: atoms arranged in regular arrays, exchanging photons) to study complex quantum states known as topological orders.
#physics #science #QuantumOptics #CondMat
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Deadline Extended: CLEO 2026 Call for Papers

The submission deadline for papers has been extended to 1 December 2025.

Help shape the #CLEO2026 technical program.

Submit Today: cleoconference.org/call-for-pap...
#CLEO #CallForPapers #Photonics #LaserScience #QuantumOptics