We propose a non-stationary method to measure the energy relaxation time of Josephson tunnel junctions from microwave enhanced escape phenomena. Compared with the previous methods, our method possesses simple and accu...We propose a non-stationary method to measure the energy relaxation time of Josephson tunnel junctions from microwave enhanced escape phenomena. Compared with the previous methods, our method possesses simple and accurate features. Moreover, having determined the energy relaxation time, we can further obtain the coupling strength between the microwave source and the junction by changing the microwave power.展开更多
Year 2025 is recognized by the United Nations as the International Year of Quantum Science and Technology.This celebration is more than a symbolic milestone;it is a recognition of the profound impact quantum science i...Year 2025 is recognized by the United Nations as the International Year of Quantum Science and Technology.This celebration is more than a symbolic milestone;it is a recognition of the profound impact quantum science is having across disciplines and applications.But quantum science has its roots firmly in optics.It all began with Max Planck's work on black body radiation.Planck's discovery of quantized energy levels laid the foundation for quantum theory.Albert Einstein further advanced the field with explanation of the photoelectric effect,demonstrating that light could be understood as discrete packets of energy,which we now call photons.Niels Bohr then developed a model of the atom that explained the emission spectrum of hydrogen.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 10674062, the Natural Science Foundation of Jiangsu Province （BK2006118）, and the Doctoral Funds of Ministry of Education of China （20060284022）. We thank Sun Guozhu, Qing Lan and Mao Ting for useful discussions.
文摘We propose a non-stationary method to measure the energy relaxation time of Josephson tunnel junctions from microwave enhanced escape phenomena. Compared with the previous methods, our method possesses simple and accurate features. Moreover, having determined the energy relaxation time, we can further obtain the coupling strength between the microwave source and the junction by changing the microwave power.
文摘Year 2025 is recognized by the United Nations as the International Year of Quantum Science and Technology.This celebration is more than a symbolic milestone;it is a recognition of the profound impact quantum science is having across disciplines and applications.But quantum science has its roots firmly in optics.It all began with Max Planck's work on black body radiation.Planck's discovery of quantized energy levels laid the foundation for quantum theory.Albert Einstein further advanced the field with explanation of the photoelectric effect,demonstrating that light could be understood as discrete packets of energy,which we now call photons.Niels Bohr then developed a model of the atom that explained the emission spectrum of hydrogen.
