Article
Optics
Maolin Chang, Xiangguo Yin, Li Chen, Yunbo Zhang
Summary: In this study, the asymptotic form of the correlation functions in a one-dimensional attractive Fermi polaron system were derived using the exact Bethe ansatz wave function. The results showed a polaron-molecule crossover as the attraction increased. The numerical Monte Carlo methods were employed to verify the analytical results and the calculation was extended to excited states.
Article
Physics, Multidisciplinary
Giulia De Rosi, Riccardo Rota, Grigori E. Astrakharchik, Jordi Boronat
Summary: We report an intriguing anomaly in the temperature dependence of the specific heat of a one-dimensional Bose gas. This anomaly resembles a superfluid-to-normal phase transition observed in higher dimensions, despite phase transitions not being allowed in one dimension. The anomaly can be attributed to unpopulated states that act as an energy gap located below the hole branch in the excitation spectrum. Furthermore, thermal fluctuations at temperatures near the anomaly threshold can become comparable to the maximum hole energy, leading to a qualitative change in the excitation structure.
Article
Physics, Multidisciplinary
Milosz Panfil, Sarang Gopalakrishnan, Robert M. Konik
Summary: Many experimentally relevant systems are quasi-one-dimensional, consisting of nearly decoupled chains, where weak interchain couplings play a crucial role in thermalizing the system. We developed a Boltzmann-equation formalism involving a collision integral that is asymptotically exact for any interacting integrable system, and applied it to study relaxation in coupled Bose gases in the Newton's cradle setup. We found that relaxation involves a broad spectrum of timescales and the Markov process governing relaxation at late times is gapless, leading to nonexponential approach to equilibrium even for spatially uniform perturbations.
PHYSICAL REVIEW LETTERS
(2023)
Article
Polymer Science
Tamara M. Diez-Rodriguez, Enrique Blazquez-Blazquez, Juan C. Martinez, Maria L. Cerrada, Ernesto Perez
Summary: This study utilized time-resolved variable-temperature synchrotron techniques to investigate the structure and morphology of a semi-crystalline PLLA with a high content of L-isomer. Results showed that certain parameters exhibited clear temperature discontinuity during the transition from the disordered α' phase to the more ordered α phase. In addition, the glass transition was determined using SAXS and compared with the results from DSC analysis.
Article
Materials Science, Multidisciplinary
Imke Schneider, Ipsita Mandal, Polina Matveeva, Dominik Strassel, Sebastian Eggert
Summary: The asymptotic dynamical correlation functions in one-dimensional spin chains follow power laws, with corresponding exponents characterizing different bulk and boundary critical behavior. Results for the logarithmic contribution to boundary correlations in an isotropic Heisenberg chain are presented, and the logarithm exponent of λ = 1 is derived using renormalization group technique. Analytical results are confirmed by comparison with numerical quantum Monte Carlo data.
Article
Optics
Anirban N. Chowdhury, Rolando D. Somma, Yigit Subasi
Summary: The method proposed in the study uses mixed-state quantum computation to approximate partition functions of quantum systems. It shows an almost linear expected running time in relation to the dimension, partition function, and relative precision of the system. The approach may offer faster performance compared to exact classical methods, especially for large partition function values, and it is shown to provide a superpolynomial speedup for certain parameter values within the DQC1 complexity class.
Article
Chemistry, Physical
Nils Wittemeier, Matthieu J. Verstraete, Pablo Ordejon, Zeila Zanolli
Summary: Interference effects in finite sections of one-dimensional moire crystals were investigated using a Landauer-Buttiker formalism within the tight-binding approximation. The study explains interlayer transport in double-wall carbon nanotubes and proposes a predictive model. Results show visible wave function interference at the mesoscale, which can be exploited for designing quantum electronic devices.
Article
Materials Science, Multidisciplinary
F. Aryasetiawan, T. Sjostrand
Summary: The spectral functions of a one-dimensional Hubbard chain with one energy band and half-filled system are calculated using the exchange-correlation potential formalism. The results are consistent with those obtained from the dynamic density-matrix renormalization group method. The formal general solution to the equation of motion of the Green's function is presented.
Article
Optics
Ying Yang, Dawei Cao
Summary: In this paper, a simple method is proposed to characterize topological phase transitions in one-dimensional topological photonic waveguide arrays using the first singular value of the spatial correlation of biphotons. The method is validated by experimental results and demonstrated to be universal in different models. It has significant potential applications in topological photonics and topological quantum computing.
Article
Physics, Multidisciplinary
Ivan P. Christov
Summary: The time-dependent quantum Monte Carlo method is used to calculate the entanglement of electrons in one-dimensional quantum dots with various spin configurations. The study finds that the spatial entanglement differs in parallel-spin and spin-compensated cases, with outermost opposite-spin electrons behaving like bosons in the latter case. The results are consistent with numerically exact results where comparison is possible.
Article
Physics, Multidisciplinary
Matteo Carrega, Joonho Kim, Dario Rosa
Summary: In this study, a non-equilibrium dynamics induced by strongly correlated Hamiltonians with all-to-all interactions is explored through a Sachdev-Ye-Kitaev (SYK)-based quench protocol. It is shown that the time evolution of simple spin-spin correlation functions is sensitive to the degree of k-locality of the corresponding operators, providing a tool to distinguish between operator-hopping and operator growth dynamics, which are indicative of quantum chaos in many-body quantum systems. This observation could be utilized as a promising method to probe chaotic behavior in advanced quench setups.
Article
Chemistry, Multidisciplinary
Yi Li, Chong Zhang, Tao-Tao Zhuang, Yue Lin, Jie Tian, Xing-Yu Qi, Xufeng Li, Rui Wang, Liang Wu, Guo-Qiang Liu, Tao Ma, Zhen He, Hao-Bo Sun, Fengjia Fan, Haiming Zhu, Shu-Hong Yu
Summary: A methodology for precise control of the composition, dimensions, crystal phases, interfaces, and periodicity of nano-objects has been reported in this study, resulting in a library of distinct superlattice nanowires integrated with plasmonic, metallic, or near-infrared-active chalcogenides for potential use in solar energy conversion. The optimized superlattice nanowires show significantly enhanced photocatalytic hydrogen production rates compared to individual objects, indicating great promise for target applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Computer Science, Information Systems
Freddy Alejandro Chaurra-Gutierrez, Claudia Feregrino-Uribe, Julio Cesar Perez-Sansalvador, Gustavo Rodriguez-Gomez
Summary: We propose the first quantum version of the one-dimensional integer wavelet S-Transform (QIST). The QIST is based on a new Quantum Block Representation by Basis States (QBRBS) and a quantum rounding operator that avoids nonlinearities. Complete quantum circuits for addition, subtraction, and halving operations are developed with polynomial quantum complexity and constant time complexity. The experimental results on MATLAB and Qiskit coincide with the theoretical results of the classical version. This new quantum transform enables new developments in information hiding, compression, and IoT applications.
INFORMATION SCIENCES
(2023)
Article
Quantum Science & Technology
Tomoki Yamagami, Etsuo Segawa, Norio Konno
Summary: The study extends the scheme of quantum teleportation by quantum walks and introduces the mathematical definition and necessary conditions for achieving quantum teleportation rigorously. The results classify the parameters necessary for the successful accomplishment of quantum teleportation.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Physics, Multidisciplinary
Marissa D'Onofrio, Yuanheng Xie, A. J. Rasmusson, Evangeline Wolanski, Jiafeng Cui, Philip Richerme
Summary: Researchers experimentally studied two-dimensional (2D) Coulomb crystals in the radial-2D phase of a linear Paul trap, finding that the structural phase boundaries of such crystals can be well described by the pseudopotential approximation and the micromotion-induced heating is confined to the radial plane. They also verified that the transverse motional modes remain decoupled and cold in this geometric configuration, confirming the radial-2D ion crystals as a robust experimental platform for various theoretical proposals in quantum simulation and computation.
PHYSICAL REVIEW LETTERS
(2021)
