4,612 research outputs found
Scalable Bell inequalities for multiqubit systems
Based on Clauser-Horner-Shimony-Holt inequality, we show a fruitful method to
exploit Bell inequalities for multipartite qubit systems. These Bell
inequalities are designed with a simpler architecture tailored to experimental
demonstration. Under the optimal setting we derive a set of compact Mermin-type
inequalities and discuss quantum violations for generalized
Greenberger-Horne-Zeilinger (GGHZ) states. Also, we reveal relationship between
quantum nonlocality and four-partite entanglement for four-qubit GGHZ states.Comment: 4 pages, 1 figur
Research on the Demand Forecasting Method of Sichuan Social Logistics Based on Positive Weight Combination
The macro-social logistics demand forecast is of great strategic significance to optimize the national or regional economic structure, improve the investment environment and improve the overall competitiveness of regional economy. In this study, the total amount of social logistics in Sichuan province was selected to reflect the social logistics demand, the factors influencing the social logistics demand in Sichuan province were analyzed, and eight economic indicators were summarized. This study first USES the time series prediction model (including the time response model GM (1, 1)), an exponential smoothing model, causal relation model (including multidimensional prediction model GM (1, n) and BP neural network model), to build four methods combination model, weight given solution of linear programming each forecast model, the forecasting result of combination forecast model deviation is minimal. The posterior difference test was applied to the above five models to compare the prediction results of each prediction method
A Continuous Dual-Axis Atomic Interferometric Inertial Sensor
We present an interferometric inertial sensor that utilizes two
counter-propagating atomic beams with transverse two-dimensional cooling. By
employing three parallel and spatially aligned Raman laser beams for
Doppler-sensitive Raman transitions, we successfully generate inertia-sensitive
Mach-Zehnder interference fringes with an interrogation length of
. The measured rotation and acceleration sensitivities are
and ,
respectively. The sensor's capability to measure rotation and acceleration
simultaneously in dynamic environments is validated through comparative
analysis with classical sensors under force oscillation in different
directions. Additionally, we conduct experiments on a turntable to calibrate
the gyroscope's scaling factor and address nonlinearity.Comment: 8 pages, 4 figure
Unusual Features of Non-Dividing Somatic Macronuclei in the Ciliate Class Karyorelictea
Genome structure and nuclear organization have been intensely studied in model ciliates such as Tetrahymena and Paramecium, yet few studies have focused on nuclear features of other ciliate clades including the class Karyorelictea. In most ciliates, both the somatic macronuclei and germline micronuclei divide during cell division and macronuclear development only occurs after conjugation. However, the macronuclei of Karyorelictea are non-dividing (i.e. division minus (Div−)) and develop anew from micronuclei during each asexual division. As macronuclei age within Karyorelictea, they undergo changes in morphology and DNA content until they are eventually degraded and replaced by newly developed macronuclei. No less than two macronuclei and one micronucleus are present in karyorelictid species, which suggests that a mature macronucleus 1) might be needed to sustain the cell while a new macronucleus is developing and 2) likely plays a role in guiding the development of the new macronucleus. Here we use a phylogenetic framework to compile information on the morphology and development of nuclei in Karyorelictea, largely relying on the work of Dr. Igor Raikov (1932–1998). We synthesize data to speculate on the functional implications of key features of Karyorelictea including the presence of at least two macronuclei in each cell and the inability for macronuclei to divide
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