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The generation, manipulation and fundamental understanding of entanglement lies at very heart of quantum mechanics. Among various types of entangled states, the NOON states are a kind of special quantum entangled states with two orthogonal component states in maximal superposition, which have a wide range of potential applications in quantum communication and quantum information processing. Here, we propose a fast and simple scheme for generating NOON states of photons in two superconducting resonators by using a single superconducting transmon qutrit. Because only one superconducting qutrit and two resonators are used, the experimental setup for this scheme is much simplified when compared with the previous proposals requiring a setup of two superconducting qutrits and three cavities. In addition, this scheme is easier and faster to implement than the previous proposals, which require using a complex microwave pulse, or a small pulse Rabi frequency in order to avoid nonresonant transitions.
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http://dx.doi.org/10.1038/srep03898 | DOI Listing |
Nat Ecol Evol
September 2025
Princeton School of Public and International Affairs, Princeton University, Princeton, NJ, USA.
The decline of migratory shorebirds in the East Asian-Australasian Flyway has attracted global attention. Conservation efforts thus far have targeted habitat loss and degradation in the Yellow Sea region, with little attention having been given to direct mortality by humans. Here we studied the impacts of direct mortality of shorebirds along China's coast during migration from hunting, fishery bycatch and, at aquaculture sites, bird deterrence measures.
View Article and Find Full Text PDFEnviron Sci Process Impacts
August 2025
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
Ambroxol (AMB), a widely used expectorant drug, has been ubiquitously detected in aquatic environments due to its limited metabolism in the human body. Herein, we systematically investigated the photodegradation of AMB in waters upon natural sunlight irradiation. AMB has a p value of 8.
View Article and Find Full Text PDFSci Rep
August 2025
State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China.
Ground-based very low frequency (VLF) transmitter waves (3 - 30 kHz) can cause the precipitation loss of high-energy electrons in Earth's radiation belts. Although the propagation and attenuation of aabrtificial VLF waves have been studied for more than half a century, it is not clear whether solar extreme ultraviolet (EUV) radiations can modify the VLF wave intensity in inner radiation belt and slot region (L ~ 1.1 - 3R).
View Article and Find Full Text PDFNon-Hermitian systems have attracted significant interest because of their intriguing properties, including exceptional points (EPs), where eigenvalues and the corresponding eigenstates coalesce. In particular, quantum systems with EPs exhibit an enhanced sensitivity to external perturbations, which increases with the order of the EP. Therefore, higher-order EPs hold significant potential for advanced sensing applications, but they are challenging to achieve due to stringent symmetry requirements.
View Article and Find Full Text PDFTrials
August 2025
Division of General Medicine, Section for Research, Beth Israel Deaconess Medical Center, 330 Brookline Avenue#217, Boston, MA, CO-130902215, USA.
Background: Black adults are underrepresented in cardiovascular disease clinical trials. Individual and social circumstances may limit when they are available to complete trial prescreening requirements. Characterizing preferences related to callback times and the impact of calling during preferred times could inform strategies to improve the recruitment of Black adults into clinical research.
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