@informaq.bsky.socialTwo-atom superradiance study shows final field angular momentum differs from initial atomic momentum due to magnetic state exchanges. Missing angular momentum converts to orbital angular momentum, validating conservation laws in quantum systems.
@informaq.bsky.socialNovel theoretical framework reveals that excitation exchange between atoms with arbitrary angular momentum enables dipole coherence swaps—quantum phenomena impossible in traditional J=0→1 systems, advancing understanding of atom-atom quantum interactions.
@informaq.bsky.socialResearchers discovered a path-complementarity mechanism in cavity polaritons enabling directional quantum light with asymmetric photon statistics while preserving coherent path entanglement—a breakthrough for practical quantum-optical systems.
@hydezero-message.bsky.socialHow can spatial modes reveal the separation of two stars when their images overlap? Compare direct imaging and SPADE through Fisher information, then examine limits from unknown parameters and photon loss.
https://note.com/hydezero/n/n93651be0017c?hl=en
#QuantumOptics #Astronomy
@hydezero-message.bsky.socialTwo stars blur into one image. Sorting light into spatial modes can improve estimates of their gap under ideal conditions, including equal brightness and a known center. A guide to a quantum telescope review.
https://note.com/hydezero/n/n6c2fa26bce02?hl=en
#Astronomy #QuantumOptics
@informaq.bsky.socialClassical light can produce Hong-Ou-Mandel effects. Researchers generalize photonic optics theory across quantum and classical frameworks, questioning what truly defines quantum advantage.
@informaq.bsky.socialDemonstrates that different density matrix descriptions of pulsed light yield identical measurement results when accounting for finite photodetector response times, revealing the physical meaning of quantization cavity length and the origin of pulse spectra.
@nithecs.bsky.socialNITheCS & QSUN Seminar: ‘Controlling Two-Photon Interference & Entanglement with Mechanical Rotations’
🎤 Prof Marko Toroš (Uni. of Ljubljana)
📅 Fri, 2 Oct 2026 | 14h00 SAST
💻 Attend online
buff.ly/02N59Y4
#QuantumOptics #QuantumEntanglement #TwoPhotonInterference #MechanicalRotation #QuantumSensing
@hydezero-message.bsky.socialPaid guide: derive SPADE precision from photon probabilities for ideal equal-brightness sources with a known center. Explore finite counts and long-distance loss: ideal bounds do not guarantee achieved precision.
https://note.com/hydezero/n/nb8a3dab94b14?hl=en
#QuantumOptics #Astronomy
@tenuretracker.bsky.socialUniversitat Wien (@univie.ac.at) is hiring:
University Assistant Predoctoral/PhD Candidate
@informaq.bsky.socialMeasurement-based feedback in linear cavities generates non-Poissonian photon statistics without nonlinear interactions. Phase-controlled displacement operations post-detection continuously tune correlations between super- and sub-Poissonian regimes.
@hydezero-message.bsky.socialPaid guide: photon probabilities and precision limits.
Derive Fisher information for an ideal two-source model, then examine low photon counts, transmission loss and tests of quantum telescopes beyond ideal assumptions.
https://note.com/hydezero/n/nb8a3dab94b14?hl=en
#QuantumOptics #Astronomy
@hydezero-message.bsky.socialHow can spatial-mode sorting reveal the separation of two stars?
From probability to Fisher information, explore SPADE, ideal two-source assumptions, photon losses and finite-count limits. A free physics guide.
https://note.com/hydezero/n/n93651be0017c?hl=en
#QuantumOptics #Astronomy
@hydezero-message.bsky.socialTwo stars, one blurred image. Can we measure their separation?
With equal brightness and a known center, spatial-mode sorting can outperform ordinary imaging in an ideal model. Explore the idea and its limits.
https://note.com/hydezero/n/n6c2fa26bce02?hl=en
#Astronomy #QuantumOptics
@informaq.bsky.socialA giant atom coupled to waveguides enables programmable Hong-Ou-Mandel interferometry, with tunable coupling phases providing continuous control over two-photon quantum interference for quantum information and sensing applications.
@informaq.bsky.socialGiant atoms enable simultaneous photon blockades across multiple cavities through multipoint coupling and destructive interference—a capability impossible in conventional point-atom systems. This opens new pathways for quantum light engineering.
@informaq.bsky.socialTheory predicts light transmitted through weakly-coupled atomic ensembles can violate Bell inequalities via antibunched suppression and phase-coherent bunching mechanisms, achievable with 75-250+ atoms depending on coupling strength.
@tenuretracker.bsky.socialUniversity of Innsbruck is hiring:
University Assistant (Postdoc) in Theoretical Physics
@informaq.bsky.socialCsPbI₃ quantum dot clusters reveal how collective optical behavior emerges: isolated dots show single exponential decay, but two or more dots exhibit biexponential decay with cluster-size-dependent lifetimes, bridging single emitter and ensemble regimes.
@informaq.bsky.socialStrongly driven Jaynes-Cummings systems generate non-classical, quantum-correlated harmonics via multi-photon resonances, revealing how cascade wave-mixing processes create entanglement between harmonic orders through Stark-shift-induced dynamics.