Article
Astronomy & Astrophysics
Hector Maeso-Garcia, Jose Polo-Gomez, Eduardo Martin-Martinez
Summary: We analyze the entanglement harvesting from particle detectors and field's initial states, and find that the entanglement harvested from a quasifree state of a scalar field by a pair of detectors is a covariant quantity up to second order in perturbation theory.
Article
Optics
Zhi-Xiang Jin, Xianqing Li-Jost, Shao-Ming Fei, Cong-Feng Qiao
Summary: In this work, a one-to-one correspondence between the characteristic polynomial of the reduced state and the trace of the reduced state is established using the Schmidt decomposition of bipartite states. A family of entanglement measures based on the eigenvalues of the reduced density matrices, called informationally complete entanglement measures (ICEMs), is introduced. It is shown that ICEMs can better characterize entanglement and give criteria for state transformations under local operations and classical communication. Moreover, the ICEMs can be efficiently estimated on a quantum computer, allowing for faithful detection of full separability, entanglement, and genuine multipartite entanglement.
Article
Multidisciplinary Sciences
Kazuhiro J. Fujimoto, Tomoya Miyashita, Takehisa Dewa, Takeshi Yanai
Summary: This study theoretically investigated the orientation factor of fluorescence resonance energy transfer (FRET) between LH2 and A647. Molecular dynamics simulations and electronic coupling calculations were performed, and the results showed that A647 was approximately 26 angstrom away from the BChl assembly in LH2. The average orientation factor was predicted to be 1.55, significantly different from the isotropic mean value.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Multidisciplinary
Ge Huo, Haiqing Huang, Xinwei Zha
Summary: In this paper, a new approach, using reduced density matrices, is proposed to investigate maximally entangled 7-qubit pure states. Through numerical calculations and analysis, a simple form of maximally entangled 7-qubit pure states is constructed. The paper also demonstrates the existence of maximally entangled 7-qubit states whose marginal density matrices for subsystems of 1, 2 are completely mixed. Furthermore, the average bipartite entanglement of maximally entangled 7-qubit pure states is found to be 19/140. These findings lay the research foundation for the development of quantum communication and quantum information.
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Yaming Yan, Yanying Liu, Tao Xing, Qiang Shi
Summary: This article reviews theoretical studies of photosynthetic light-harvesting complexes using the nonperturbative hierarchical equations of motion (HEOM) approach to simulate EET dynamics and spectroscopic signals. The results demonstrate the effectiveness of the HEOM method in understanding EET pathways and quantum effects in these complexes through simulations.
WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Jiri Masojidek, Karolina Ranglova, Martina Beckova, Giuseppe Torzillo, Jana Knoppova, Ana Margarita Silva Benavides, Filip Charvat, Josef Komenda
Summary: The photosynthetic performance and electron transport rate of Chlorella cultures with reduced antenna size were studied during outdoor trials. The results showed that the strain with reduced antenna size had lower oxygen production and electron transport rate, but higher non-photochemical quenching and respiration compared to the strain with full antenna size. These findings suggest that the use of microalgae strains with reduced antenna size for outdoor mass cultivation may not be as effective as expected.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Physics, Multidisciplinary
Xin-wei Zha, Irfan Ahmed, Najeeb ur Rehman Lashari, Yanpeng Zhang
Summary: In this paper, the relationship between reduced density matrices and the n-tangle for even-N qubit states is presented. The paper also determines relations for even-qubit states from two to ten qubits of pure state. Furthermore, the generalization of the relationship between the reduced density matrices and the n-tangle for even-N qubit states is discussed.
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2023)
Proceedings Paper
Computer Science, Theory & Methods
Sergei Abramov, Marko Petkovsek, Anna Ryabenko
Summary: This statement discusses the applicability of well-known correspondences between sets of linearly independent rows and columns of matrices over non-commutative rings without nontrivial zero divisors.
PROCEEDINGS OF THE 2022 INTERNATIONAL SYMPOSIUM ON SYMBOLIC AND ALGEBRAIC COMPUTATION, ISSAC 2022
(2022)