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The development of rapid detection techniques for Alexandrium catenella.
Environ Sci Pollut Res Int
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College of the Environment and Ecology, Xiamen University, Xiamen, 361102, Fujian, People's Republic of China.
Alexandrium catenella is an important toxic algal species in the Alexandrium genus, which can form toxic red tides in large numbers. The paralytic shellfish poisoning (PSP) produced by Alexandrium catenella can seriously endanger human health and threaten the production and development of the aquaculture and fishery industries. Therefore, it is important to explore and develop effective detection and early warning methods for toxic red tides.
View Article and Find Full Text PDFEvidence for a metal-bosonic insulator-superconductor transition in compressed sulfur.
Proc Natl Acad Sci U S A
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State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China.
The abrupt drop of resistance to zero at a critical temperature is a key signature of the current paradigm of the metal-superconductor transition. However, the emergence of an intermediate bosonic insulating state characterized by a resistance peak preceding the onset of the superconducting transition has challenged this traditional understanding. Notably, this phenomenon has been predominantly observed in disordered or chemically doped low-dimensional systems, raising intriguing questions about the generality of the effect and its underlying fundamental physics.
View Article and Find Full Text PDFQuantum state processing through controllable synthetic temporal photonic lattices.
Nat Photonics
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Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications, Varennes, Quebec Canada.
Quantum walks on photonic platforms represent a physics-rich framework for quantum measurements, simulations and universal computing. Dynamic reconfigurability of photonic circuitry is key to controlling the walk and retrieving its full operation potential. Universal quantum processing schemes based on time-bin encoding in gated fibre loops have been proposed but not demonstrated yet, mainly due to gate inefficiencies.
View Article and Find Full Text PDFImaging interlayer exciton superfluidity in a 2D semiconductor heterostructure.
Sci Adv
January 2025
Department of Physics, University of Arizona, Tucson, AZ 85721, USA.
Article Synopsis
- Excitons, which are pairs of electrons and holes held together by Coulomb forces, can form a superfluid at low temperatures due to their bosonic properties.
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Entanglement-Enabled Advantage for Learning a Bosonic Random Displacement Channel.
Phys Rev Lett
December 2024
Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA.
We show that quantum entanglement can provide an exponential advantage in learning properties of a bosonic continuous-variable (CV) system. The task we consider is estimating a probabilistic mixture of displacement operators acting on n bosonic modes, called a random displacement channel. We prove that if the n modes are not entangled with an ancillary quantum memory, then the channel must be sampled a number of times exponential in n in order to estimate its characteristic function to reasonable precision; this lower bound on sample complexity applies even if the channel inputs and measurements performed on channel outputs are chosen adaptively or have unrestricted energy.
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