Results 81 to 90 of about 6,001 (225)

Photon‐Sphere Modes in Curved Optical Microcavities: A Black‐Hole Analogue Laser

Advanced Science, Volume 13, Issue 28, 18 May 2026.
An optical analogue of a Schwarzschild black hole is realized using curved microcavities that preserve light‐like geodesics. A new family of laser modes confined around the photon sphere is identified alongside conventional whispering‐gallery modes. Analytical theory, numerical simulations, and experiments reveal curvature‐induced confinement, enabling
Chenni Xu, Aswathy Sundaresan, Nazire‐Begüm Kazkal, Clement Lafargue, Lior Zarfaty, Li‐Gang Wang, Ofek Birnholtz, Dominique Decanini, Melanie Lebental, Patrick Sebbah   +9 more
wiley   +1 more source

Lasing in Bose-Fermi mixtures

, 2016
A.K. acknowledges the support from the EPSRC Established Career Fellowship. V.K., M.D., V.F.S. and A.K. acknowledge support from the Russian Ministry of Science and Education, contract (contract No. 11.G34.31.0067). P.G.S. acknowledges support from Greek
Lukoshkin, Vladimir A., Platonov, Alexey V., Kavokin, Alexey, Hoefling, Sven, Amthor, Matthias, Shelykh, Ivan A., Tsintzos, Simeon I., Liew, Timothy C H, Sapega, Victor F., Savenko, Ivan G., Kochereshko, Vladimir P., Besombes, Lucien, Afanasiev, Mikhail M., Lagoudakis, Pavlos, Mariette, Henri, Askitopoulos, Alexis, Liew, Timothy C. H., Hatzopoulos, Z., Durnev, Mikhail V., Liew, Timothy Chi Hin, Savvidis, Pavlos G., Schneider, Christian, Metzger, Christian, Kamp, Martin, Kalevich, Vladimir K.   +24 more
core   +1 more source

Bose–Einstein condensation of 162Dy and 160Dy

New Journal of Physics, 2015
We report Bose–Einstein condensation of two isotopes of the highly magnetic element dysprosium: ^162 Dy and $^{160}$ Dy. For ^162 Dy, condensates with 10 ^5 atoms form below T = 50 nK. We find the evaporation efficiency for the isotope ^160 Dy to be poor;
Yijun Tang, Nathaniel Q Burdick, Kristian Baumann, Benjamin L Lev   +3 more
doaj   +1 more source

Qutrit Dynamics of Acoustically‐Driven Nitrogen‐Vacancy Centers

Advanced Quantum Technologies, Volume 9, Issue 5, May 2026.
ABSTRACT We present a theoretical study of the interplay between the spin‐mechanical coupling and spin‐lattice relaxation in the dynamics of a nitrogen‐vacancy center in diamond. Single and double‐quantum spin transitions are driven by resonant acoustic pulses.
V. Moldoveanu, R. Dragomir
wiley   +1 more source

Nucleation of Bose-Einstein condensation [PDF]

Physical Review A, 1992
Using a functional formulation of the Keldysh theory we investigate the time evolution of a dilute Bose gas through the critical point. We determine the critical region of the gas and show that if the system is quenched inside this region, Bose-Einstein condensation is nucleated on a time scale of O(ħ/kBTc) by means of a coherent population of the one ...
openaire   +3 more sources

Bell correlations in a Bose-Einstein condensate [PDF]

Science, 2016
Correlating an atomic condensate Parts of a quantum system can be more “correlated” than what is allowed in the everyday classical world: A measurement on one part of the system can immediately affect a spatially distant component.
Schmied, Roman, Bancal, Jean-Daniel, Allard, Baptiste, Fadel, Matteo, Scarani, Valerio, Treutlein, Philipp, Sangouard, Nicolas   +6 more
openaire   +5 more sources

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, Volume 36, Issue 27, 2 April 2026.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Tratamento microscópico do modo tesoura em condensado de Bose-Einstein confinado baseado em teorias de resposta linear [PDF]

, 2003
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Física.O modo tesoura foi objeto de estudo em vários sistemas de muitos corpos e recentemente em condensados de Bose ...
Soares, Thales Costa
core  

Surface Excitations of a Bose-Einstein Condensate [PDF]

Physical Review Letters, 2000
Surface modes in a Bose-Einstein condensate of sodium atoms have been studied. We observed excitations of standing and rotating quadrupolar and octopolar modes. The modes were excited with high spatial and temporal resolution using the optical dipole force of a rapidly scanning laser beam.
ONOFRIO, ROBERTO, DURFEE DS, RAMAN C, KOHL M, KUKLEWICZ CE, KETTERLE W.   +5 more
openaire   +4 more sources

Indirect Band Edge and Chain‐Locked Linear Dichroism in the Quasi‐1D Van der Waals Antiferromagnet AgCrP2S6

Advanced Functional Materials, Volume 36, Issue 35, 30 April 2026.
AgCrP2S6 reveals a momentum‐indirect band edge (≈1.35 eV) and chain‐locked linear dichroism: the first direct transitions emerge at 1.6–1.8 eV for E||a. Resonant Raman and photoemission corroborate this assignment. In ACPS/graphene heterostructures, photocurrent turns on above ≈1.5 eV and follows the same polarization selection rules (anisotropy ≈0.53),
Oleksandr Volochanskyi, Sabrina Juergensen, Václav Valeš, Kumari Surbhi, Martin Mergl, Kseniia Mosina, Zdeněk Sofer, Jan Honolka, Patryk Kusch, Martin Kalbáč   +9 more
wiley   +1 more source