6 papers
An input-output approach for giant atom scatterings beyond the dipole approximation
S. R. He, S. N. Wang, Y. L. Zhang +2
A giant atom is an artificial matter configuration whose spatial scale is comparable to the wavelength of the interacting electromagnetic wave, such that the usual electric-dipole…
A broadband single microwave-photon detector insensitive to the thermal noise
Y. Q. Chai, M. Y. Wang, S. N. Wang +2
Thermal noise is one of the physical obstacles that constrain the achievable detection sensitivities of various detectors. Indeed, as we showed in a recent paper (PRB 111, 024501 (…
Measuring weak microwave signals via current-biased Josephson Junctions II: Arriving at single-photon detection sensitivity
Y. Q. Chai, M. Y. Wang, S. N. Wang +2
It is well known that the current-biased Josephson junction (CBJJ) can serve as a Josephson threshold detector (JTD) for the sensitive detection of weak microwave signals. Based on…
Switchable coherent state stored quantum batteries with large ergotropies
Y. F. Li, S. R. He, P. H. Ouyang +2
Quantum battery (QB) is a conceptually new energy storage and conversion device, which consists usually of a quantum charger and an energy store (called usually as the QB for simpl…
Experimental demonstrations of Josephson threshold detectors for broadband microwave photons detection
Jia-Xing He, Ya-Qiang Chai, Peng-Hui Ouyang +2
Current-biased Josephson junctions (CBJJs) have been demonstrated as sensitive Josephson threshold detectors (JTDs) in the infrared range. In this letter, we show this kind of dete…
Approaching energy quantum limit detection of microwave photons with Josephson Junctions
Y. Q. Chai, S. N. Wang, P. H. OuYang +1
Single-photon detection is an energy quantum limit detection (EQLD) of a significantly weak electromagnetic wave. Given the sensitivity of the conventional electromagnetic inductio…