Article
Nanoscience & Nanotechnology
Jiaxin Zhao, Antonio Fieramosca, Ruiqi Bao, Wei Du, Kevin Dini, Rui Su, Jiangang Feng, Yuan Luo, Daniele Sanvitto, Timothy C. H. Liew, Qihua Xiong
Summary: Researchers have observed nonlinear optical parametric polaritons in a WS2 monolayer microcavity, which opens up new possibilities for the development of all-optical valley polariton nonlinear devices.
NATURE NANOTECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Mengjie Wei, Wouter Verstraelen, Konstantinos Orfanakis, Arvydas Ruseckas, Timothy C. H. Liew, Ifor D. W. Samuel, Graham A. Turnbull, Hamid Ohadi
Summary: The authors demonstrate the on-the-fly reconfigurable optical trapping of organic polariton condensates, which are delocalized over a macroscopic distance from the excitation region. This study holds great potential for future research on polaritonic lattice physics.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Hangyong Shan, Lukas Lackner, Bo Han, Evgeny Sedov, Christoph Rupprecht, Heiko Knopf, Falk Eilenberger, Johannes Beierlein, Nils Kunte, Martin Esmann, Kentaro Yumigeta, Kenji Watanabe, Takashi Taniguchi, Sebastian Klembt, Sven Hoefling, Alexey Kavokin, Sefaattin Tongay, Christian Schneider, Carlos Anton-Solanas
Summary: The study demonstrates a strong light-matter coupling regime between microcavity photons and excitons in an atomically thin WSe2. Coherence buildup is accompanied by a threshold-like behavior in the emitted light intensity, characteristic of a polariton laser effect. Valley physics is also evident in the manipulation of polaritons via the valley-Zeeman effect in the presence of an external magnetic field.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Applied
Wenyu Xing, Ranran Cai, Kodai Moriyama, Kensuke Nara, Yunyan Yao, Weiliang Qiao, Kazuyoshi Yoshimura, Wei Han
Summary: This paper reports the study of the spin Seebeck effect (SSE) in single crystalline Pb2V3O9 and finds a strong correlation between the temperature-dependent critical magnetic fields and the Bose-Einstein condensation phase of the quantum magnet Pb2V3O9. This shows the potential of using spin current as a probe to study the spin correlation and phase transition properties in quantum magnets.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Multidisciplinary
Joshua Aftergood, So Takei
Summary: We theoretically study the conductivity of a disordered 2D metal coupled to ferromagnetic magnons with a quadratic spectrum. In the diffusive limit, the combination of disorder and magnon-mediated electron interaction leads to a sharp metallic correction to the Drude conductivity as the magnons approach criticality. This correction is weaker than the log-squared correction obtained when disordered electrons couple to diffusive spin fluctuations near a Hertz-Millis transition. It is proposed to verify this prediction in the ferromagnetic insulator K2CuF4 under an external magnetic field through electrical transport measurements on the proximate metal.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
S. Mukherjee, V. K. Kozin, A. Nalitov, I. A. Shelykh, Z. Sun, D. M. Myers, B. Ozden, J. Beaumariage, M. Steger, L. N. Pfeiffer, K. West, D. W. Snoke
Summary: The study focused on the effect of pseudomagnetic field on a polariton condensate in a ring-shaped microcavity, resulting in a stable four-leaf pattern. The pattern was found to originate from the interaction of cavity potential, energy relaxation, and TE-TM splitting. Comparisons with the dissipative one-dimensional spinor Gross-Pitaevskii equation with the TE-TM splitting energy showed good qualitative agreement.
Article
Physics, Multidisciplinary
Yuncheng Xiong, Lan Yin
Summary: Through numerical calculations, this study explores the quantum-droplet state in a three-dimensional Bose gas with 1D spin-orbit coupling and Raman coupling, revealing the existence of the stripe phase in a wider range of Raman coupling strength compared to the BEC-gas state. Interestingly, both spin-orbit coupling and Raman coupling strengths can be utilized to adjust the density of the droplet.
CHINESE PHYSICS LETTERS
(2021)
Article
Astronomy & Astrophysics
Andrew Eberhardt, Michael Kopp, Alvaro Zamora, Tom Abel
Summary: The numerical method and PYTHON package CHiMES introduces a second order extension of classical field approach to accurately simulate quantum systems initially well approximated by mean field theory. The success of this method depends on two conditions: the quantum system must be well described by classical theory initially, and the growth of the higher order moments must be hierarchical.
Article
Materials Science, Multidisciplinary
Ekaterina Aladinskaia, Roman Cherbunin, Evgeny Sedov, Alexey Liubomirov, Kirill Kavokin, Evgeny Khramtsov, Mikhail Petrov, P. G. Savvidis, Alexey Kavokin
Summary: This study investigates the formation of exciton-polariton condensates in potlike traps created by optical pumping in a planar microcavity with embedded quantum wells. The experiment reveals the discrete spectrum of polariton eigenstates and demonstrates the control of these states through manipulating the shape and size of the trap and the spatial density distribution of the exciton reservoir.
Article
Materials Science, Multidisciplinary
Minseong Lee, Rico Schoenemann, Hao Zhang, David Dahlbom, Tae-Hwan Jang, Seung-Hwan Do, Andrew D. Christianson, Sang-Wook Cheong, Jae-Hoon Park, Eric Brosha, Marcelo Jaime, Kipton Barros, Cristian D. Batista, Vivien S. Zapf
Summary: We conducted a high-field study on the S = 2 quantum magnet Ba2FeSi2O7, which has a strongly anisotropic easy-plane square lattice. By observing the spin level crossing and magnetic field-induced spin level crossing, we studied the interplay between spin level crossings and antiferromagnetic order in this high-spin antiferromagnetic system. We determined the phase boundaries and spin level crossings using various measurements and calculations, and discovered the multiferroic behavior of magnetically induced electric polarization.
Article
Optics
Yan-Peng Bai, Jing-Lun Li, Gao-Ren Wang, Zhong-Bo Chen, Bo-Wen Si, Shu-Lin Cong
Summary: This study presents a simple theoretical model that describes the suppressing reactivity of an ultracold Fermi molecular gas in a degenerate regime using the statistical potential. The model successfully reproduces the experimentally observed suppression of the chemical reaction rate and intuitively captures the strength of spatial correlation through the statistical potential.
Article
Physics, Multidisciplinary
Emanuele G. Dalla Torre, Matthew J. Reagor
Summary: Lasers and Bose-Einstein condensates exhibit macroscopic quantum coherence in different ways, with lasers having a defined global phase and fluctuating photon numbers, while BECs have a conserved number of particles and an undefined global phase. Researchers have created a unified framework connecting these two states using gate-based quantum circuits. By measuring the total number of particles without destroying coherence, they found that particle conservation enhances long-range phase coherence.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
M. Knorr, J. M. Manceau, J. Mornhinweg, J. Nespolo, G. Biasiol, N. L. Tran, M. Malerba, P. Goulain, X. Lafosse, M. Jeannin, M. Stefinger, I Carusotto, C. Lange, R. Colombelli, R. Huber
Summary: The ultrafast scattering dynamics of intersubband polaritons in dispersive cavities embedding GaAs/AlGaAs quantum wells were directly studied using a noncollinear pump-probe geometry with phase-stable midinfrared pulses. Selective excitation of the lower polariton at a frequency of similar to 25 THz and at a finite in-plane momentum k(parallel to) resulted in the emergence of a narrowband maximum in the probe reflectivity at k(parallel to) = 0. A quantum mechanical model identified the underlying microscopic process as stimulated coherent polariton-polariton scattering.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
J. Smits, H. T. C. Stoof, P. van der Straten
Summary: This study presents the observation and analysis of a spontaneously broken discrete time-translation symmetry in a driven system, showing a 50-50 split between two stable and temporal-distinct solutions. The experiment allows for further exploration of symmetry breaking in the discrete time crystal and for engineering excitations in space and time in the quantum domain.
Article
Optics
Aitor Alana, Nicolo Antolini, Giulio Biagioni, Inigo L. Egusquiza, Michele Modugno
Summary: We provide a theoretical characterization of the dynamical crossing of the superfluid-supersolid phase transition for a dipolar condensate confined in an elongated trap, and analyze the effects of the interparticle scattering length and ramp velocity on the collective excitations of the system. The results show that the strength of the transverse confinement and the continuity of the transition have a significant impact on the excitation behavior of the system.
Article
Nanoscience & Nanotechnology
Abhijit Pramanick, Naresh C. Osti, Niina Jalarvo, Scott T. Misture, Souleymane Omar Diallo, Eugene Mamontov, Y. Luo, Jong-Kahk Keum, Ken Littrell
Article
Chemistry, Physical
Grayson L. Jackson, Sriteja Mantha, Sung A. Kim, Souleymane O. Diallo, Kenneth W. Herwig, Arun Yethiraj, Mahesh K. Mahanthappa
JOURNAL OF PHYSICAL CHEMISTRY B
(2018)
Article
Polymer Science
Naresh C. Osti, Eugene Mamontov, Luke Daemen, James F. Browning, Jong Keum, Hoi Chun Ho, Jihua Chen, Kunlun Hong, Souleymane O. Diallo
JOURNAL OF APPLIED POLYMER SCIENCE
(2019)
Article
Physics, Condensed Matter
J. Ross Stewart, Sean R. Giblin, Dirk Honecker, Peter Fouquet, Dharmalingam Prabhakaran, Jonathan W. Taylor
JOURNAL OF PHYSICS-CONDENSED MATTER
(2019)
Article
Chemistry, Physical
Tom Heitmann, Gavin Hester, Saibal Mitra, Thomas Calloway, Madhu Sudan Tyagi, Andrew Miskowiec, Souleymane Diallo, Naresh Osti, Eugene Mamontov
SOLID STATE IONICS
(2019)
Article
Chemistry, Physical
Grayson L. Jackson, Sung A. Kim, Ashish Jayaraman, Souleymane O. Diallo, Mahesh K. Mahanthappa
JOURNAL OF PHYSICAL CHEMISTRY B
(2020)
Article
Physics, Multidisciplinary
Hannah C. Robarts, Thomas E. Millichamp, Daniel A. Lagos, Jude Laverock, David Billington, Jonathan A. Duffy, Daniel O'Neill, Sean R. Giblin, Jonathan W. Taylor, Grazyna Kontrym-Sznajd, Malgorzata Samsel-Czekala, Hongbin Bei, Sai Mu, German D. Samolyuk, G. Malcolm Stocks, Stephen B. Dugdale
PHYSICAL REVIEW LETTERS
(2020)
Proceedings Paper
Optics
K. Brumbaugh, C. Royse, C. Gregory, K. Roe, J. A. Greenberg, S. O. Diallo
ANOMALY DETECTION AND IMAGING WITH X-RAYS (ADIX) IV
(2019)
Proceedings Paper
Optics
Joshua H. Carpenter, Yijun Ding, Ava Hurlock, David Coccarelli, Chris Gregory, Souleymane O. Diallo, Amit Ashok, Michael E. Gehm, Joel A. Greenberg
ANOMALY DETECTION AND IMAGING WITH X-RAYS (ADIX) IV
(2019)
Article
Chemistry, Physical
Caitlyn M. Wolf, Kiran H. Kanekal, Yeneneh Y. Yimer, Madhusudan Tyagi, Souleymane Omar-Diallo, Viktoria Pakhnyuk, Christine K. Luscombe, Jim Pfaendtner, Lilo D. Pozzo
Proceedings Paper
Optics
Kevin J. Liang, Geert Heilmann, Christopher Gregory, Souleymane O. Diallo, David Carlson, Gregory P. Spell, John B. Sigman, Kris Roe, Lawrence Carin
ANOMALY DETECTION AND IMAGING WITH X-RAYS (ADIX) III
(2018)
Proceedings Paper
Optics
S. O. Diallo, K. Tadlock, C. Gregory, S. Wolter, J. A. Greenberg, K. Roe
ANOMALY DETECTION AND IMAGING WITH X-RAYS (ADIX) III
(2018)
Article
Materials Science, Multidisciplinary
P. M. Sarte, R. A. Cowley, E. E. Rodriguez, E. Pachoud, D. Le, V Garcia-Sakai, J. W. Taylor, C. D. Frost, D. Prabhakaran, C. MacEwen, A. Kitada, A. J. Browne, M. Songvilay, Z. Yamani, W. J. L. Buyers, J. P. Attfield, C. Stock
Meeting Abstract
Chemistry, Multidisciplinary
Grayson Jackson, Sung A. Kim, Sriteja Mantha, Souleymane Diallo, Kenneth Herwig, Arun Yethiraj, Mahesh Mahanthappa
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Materials Science, Multidisciplinary
K. W. Plumb, C. Stock, J. A. Rodriguez-Rivera, J. -P. Castellan, J. W. Taylor, B. Lau, W. Wu, S. R. Julian, Young-June Kim