62 citations · 146 across the 14 of their papers we have counts for
14 papers
A microwave scattering spectral method to detect the nanomechanical vibrations embedded in a superconducting qubit
Haiyan Gao, Lianfu Wei
Nanomechanical resonators (NMRs), as the quantum mechanical sensing probers, have played the important roles for various high-precision quantum measurements. Differing from the pre…
Generalized Bell-like inequality and maximum violation for multiparticle entangled Schrödinger-cat-states of spin-s
Yan Gu, Wei-Dong Li, Xiao-Lei Hao +2
This paper proposes a generalized Bell-like inequality (GBI) for multiparticle entangled Schrödinger-cat--states of arbitrary spin-. Based on quantum probability statistics the…
Maximum violation of Wigner inequality for two-spin entangled states with parallel and antiparallel polarizations
Yan Gu, Haifeng Zhang, Zhigang Song +2
The experimental test of Bell's inequality is mainly focused on Clauser-Horne-Shimony-Holt (CHSH) form, which provides a quantitative bound, while little attention has been pained…
Quasi-B-mode generated by high-frequency gravitational waves and corresponding perturbative photon fluxes
Fangyu Li, Hao Wen, Zhenyun Fang +3
Interaction of very low-frequency primordial(relic) gravitational waves(GWs) to cosmic microwave background(CMB) can generate B-mode polarization. Here, for the first time we point…
Optical responses of the switching currents in Al and Nb Josephson junctions
Yiwen Wang, Pinjia Zhou, Lianfu Wei +5
We experimentally demonstrated the optical responses of the switching currents in two types of Josephson tunnel junctions: Al/AlOx/Al and Nb/AlOx/Nb. The radiation-induced switchin…
Photon-noise limited sensitivity in titanium nitride kinetic inductance detectors
Johannes Hubmayr, Jim Beall, Dan Becker +14
We demonstrate photon-noise limited performance at sub-millimeter wavelengths in feedhorn-coupled, microwave kinetic inductance detectors (MKIDs) made of a TiN/Ti/TiN trilayer supe…
Photon-induced thermal effects in superconducting coplanar waveguide resonators
Yiwen Wang, Pinjia Zhou, Lianfu Wei +6
We experimentally investigated the optical responses of a superconducting niobium resonator. It was found that, with increasing radiation power, the resonance frequency increases m…
Single-atom polarizer
W. A. Li, L. F. Wei
Traditional polarizer provides a way to convert an unknown polarization into a specified polarization. According to Malus, the intensity of the transmission is directly proportiona…
Experimental demonstrations of high-Q superconducting coplanar waveguide resonators
Haijie Li, Yiwen Wang, Lianfu Wei +6
We designed and successfully fabricated an absorption-type of superconducting coplanar waveguide (CPW) resonators. The resonators are made from a Niobium film (about 160 nm thick)…
Stark-chirped rapid adiabatic passage in the presence of dissipation for quantum computation
X. Shi, C. H. Oh, L. F. Wei
Stark-chirped rapid adiabatic passage (SCRAP) is an important technique used for coherent quantum controls. In this paper we investigate how the practically-existing dissipation of…
Quantum computation with surface-state electrons by rapid population passages
X. Shi, L. F. Wei, C. H. Oh
Quantum computation requires coherently controlling the evolutions of qubits. Usually, these manipulations are implemented by precisely designing the durations (such as the -pul…
Controllable entanglement preparations between atoms in spatially-separated cavities via quantum Zeno dynamics
Wen-An Li, L. F. Wei
By using quantum Zeno dynamics, we propose a controllable approach to deterministically generate tripartite GHZ states for three atoms trapped in spatially separated cavities. The…
Quantum nondemolition measurements of a flux qubit coupled to a noisy detector
Wei Jiang, Yang Yu, Lianfu Wei
We theoretically study the measurement-induced dephasing caused by back action noise in quantum nondemolition measurements of a superconducting flux qubit which is coupled to a sup…
Frequency-doubled scattering of symmetry-breaking surface-state electrons on liquid Helium
Miao Zhang, Wenzhi Jia, Lianfu Wei
Any systems with symmetry-breaking eigenstates can effectively radiate photons with doubled frequency of the incident light, which is known as the second harmonic generation. Here,…