Results 181 to 190 of about 16,604,898 (278)

Real-Time Simulation of Low-Energy Quantum Scattering with Quantum Circuits. [PDF]

J Phys Chem Lett
Courtney JM, Stancil PC.
europepmc   +1 more source

A study of observational approaches for the time-domain astronomy

A study of observational approaches for the time-domain astronomy
「占星術」と呼ばれていた頃の天体観測は、「動く天体」(惑星)と「動かない天体」(恒星)の観測に大別された。占星術の主たる興味は不思議な動きを見せる惑星の動きであったが、恒星も興味の対象であった。星座としての恒星分布は惑星の位置を記録するための(固定された)基準として利用できたからである。恒星が運動していることに気づいたのは17世紀の天文学者E. ハレーである(固有運動の発見)。ハレーの頭上に輝いていた星々の中に、古代ギリシアのヒッパルコスが残した星表に記録された位置からずれているものがあることに気づいたのだ。一般に遠方に位置する天体は「止まっている」ように見えたり、その動きが無視できるほど小さく見える。例えば、上空で伸びていく飛行機雲より眼前のハエの方が「速く」見えたりする ...
openaire   +1 more source

Revealing the Resonant Physics of Open Photonic Time Crystals

Laser &Photonics Reviews, EarlyView.
ABSTRACT Photonic time crystals (PTCs) are media whose permittivity is modulated periodically in time, enabling momentum bandgaps and parametric amplification of light. Their realization at the nanoscale can revolutionize the study of light‐matter interactions.
Adrià Canós Valero, Sergei Gladyshev, David Globosits, Stefan Rotter, Egor A. Muljarov, Thomas Weiss   +5 more
wiley   +1 more source

Laser-induced topological spin switching at room temperature in the van der Waals ferromagnet Fe₃GaTe₂. [PDF]

Npj Spintron
Freeman CWF, Cho W, Keatley PS, Cai P, Xue Z, Yang C, Youel H, Santos EJG, Hicken RJ, Yang H, Kurebayashi H, Cubukcu M, Dąbrowski M.   +12 more
europepmc   +1 more source

Intrinsically Design‐Rule‐Compliant Nanophotonic Inverse Design via Learned Generative Manifolds

Laser &Photonics Reviews, EarlyView.
A generative reparameterization framework for nanophotonic inverse design is introduced, restricting optimization to a learned manifold of design‐rule‐compliant geometries. Unlike conventional penalty‐based approaches, fabrication constraints are encoded intrinsically within the design representation.
Bahrem Serhat Danis, Demet Baldan Desdemir, Enes Akcakoca, Zeynep Ipek Yanmaz, Gulzade Polat, Ahmet Onur Dasdemir, Aytug Aydogan, Abdullah Magden, Emir Salih Magden   +8 more
wiley   +1 more source

Periodic radio and X-ray emission from an accreting white dwarf binary. [PDF]

Nat Astron
Rose K, Pritchard J, Murphy T, Driessen LN, Kaplan DL, Caleb M, Wang Z, Zic A, Andreoni I, Carney J, Barlow BN, Dobie D, Gu M, Heald G, Huber D, Lenc E, Leung JK, Lu W, Momose R, Pedersen MG, Qu Y, Rea N, de Ruiter I, Shaji K, Sivakoff GR, Thomson AJM, Wang YL, Yang GJ, Zahedy F.   +28 more
europepmc   +1 more source

Tunable Terahertz Generation in Dispersion‐Engineered ZnTe Waveguides

Laser &Photonics Reviews, EarlyView.
A dispersion‐engineered Zinc Telluride (ZnTe) slab waveguide platform enables tunable and efficient guided‐wave terahertz (THz) generation through modal phase matching. By tailoring the optical and THz modal dispersion, coherent THz emission is achieved across 0.1–3 THz.
Arun Jana, Cormac McDonnell, Mai Tal, Anastasiya Reveguk, Amit Kohn, Tal Ellenbogen   +5 more
wiley   +1 more source

Altermagnetic spin textures: Emergent electrodynamics, quantum geometry, and probes. [PDF]

Sci Adv
Schrade C, Scheurer MS.
europepmc   +1 more source

Astronomy Online

This website, authored by Ricky Leon Murphy of Astronomy Online, is a collection of references, images, and information for general astronomy. This work covers topics from the basics of science and observation through the solar system, stars, cosmology ...
Murphy, Ricky Leon
core  

Visible Octave Frequency Combs in Silicon Nitride Nanophotonic Waveguides Driven by Ti:Sapphire Lasers

Laser &Photonics Reviews, EarlyView.
Chip‐based frequency combs are usually pumped from telecom wavelengths, far from the visible. This work instead pumps close to the visible with a Ti:sapphire laser ‐ the source behind the original optical frequency combs and now becoming chip‐integrable‐ and lets silicon‐nitride waveguides convert it into efficient, octave‐spanning visible‐to‐infrared ...
Abdullah Alabbadi, Ewan Allan, Hanna Ostapenko, Pablo Castro‐Marín, Derryck T. Reid, Pascal Del'Haye   +5 more
wiley   +1 more source