We describe a technique for enhancing the efficiency of sum frequency generation using entangled signal and idler photons. By resonating the sum frequency field, we observe that the generated power varies linearly with input power and is increased by a factor of 12.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.102.053602 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High efficiency high gain low side lobe level and slant polarization monopulse antenna using cavity backed slot coupled patch antenna.
Sci Rep
January 2025
Faculty of Electric and Computer, Malek Ashtar University of Technology, Tehran, Iran.
In this paper, a multilayer monopulse antenna at Ku-Band with high efficiency, high power handling capability, high gain, 45° linear polarization and low sidelobe is presented. A new slot antenna is proposed as a radiating element based on a cavity-backed slot-coupled patch antenna. Using an enclosed cavity structure reduces coupling between antenna elements, thus increasing the antenna efficiency.
View Article and Find Full Text PDFAssociation of a healthy lifestyle index with anthropometric indices and obesity in Hong Kong Chinese women: Evidence from the MECH-HK cohort study.
Obes Res Clin Pract
January 2025
School of Nursing, The Hong Kong Polytechnic University, Hong Kong, China. Electronic address:
Aim: This cross-sectional study aimed to examine the associations of a healthy lifestyle index (HLI) with several anthropometric indices and obesity among Hong Kong Chinese women.
Subjects/methods: A total of 3174 women (56.16 ± 8.
Predictors of severity factors associated with severe scrub typhus among children in a Tertiary Care Hospital.
J Vector Borne Dis
October 2024
Department of Pediatrics, IMS and SUM Hospital, Siksha 'O' Anusandhan (deemed to be) University, K8, Kalinga Nagar, Bhubaneswar, Odisha, India.
Background Objectives: Scrub typhus is an acute febrile zoonotic disease caused by the obligate intracellular gram-negative bacteria Orientia tsutsugamushi. Growing data over the last few years on the Indian subcontinent suggest that it is one of the most widespread but under-reported diseases. The study aimed to document the clinical and paraclinical profile and evaluate complications of scrub typhus in severe and nonsevere pediatric age groups.
View Article and Find Full Text PDFMonounsaturated fatty acids from plant or animal sources and risk of type 2 diabetes in three large prospective cohorts of men and women.
Diabetologia
January 2025
Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Aims/hypothesis: Existing evidence on the relationship between intake of monounsaturated fatty acids (MUFAs) and type 2 diabetes is conflicting. Few studies have examined whether MUFAs from plant or animal sources (MUFA-Ps and MUFA-As, respectively) exhibit differential associations with type 2 diabetes. We examined associations of intakes of total MUFAs, MUFA-Ps and MUFA-As with type 2 diabetes risk.
View Article and Find Full Text PDFStudent perceptions of U.S. based school day physical activity best practices in relation to accelerometer-based sedentary behavior and activity.
Prev Med Rep
January 2025
Johns Hopkins University Bloomberg School of Public Health, Department of Population, Family and Reproductive Health, Baltimore, MD 21205, USA.
Objective: To examine associations between student perceptions of school physical activity best practices and accelerometer-based physical activity during school days.
Methods: The sample was 758 students in grades 3rd-4th or 6th-7th (female-58 %; 31 % Black/African American) from 33 schools across five school districts in a Mid-Atlantic state in the U.S.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!