69 citations · 291 across the 21 of their papers we have counts for
4 papers · 1 filter
Geometric Ramsey Interferometry with a Tripod Scheme
Chetan Sriram Madasu, Ketan Damji Rathod, Chang Chi Kwong +1
Ramsey interferometry is a key technique for precision spectroscopy and to probe the coherence of quantum systems. Typically, an interferometer is constructed using two quantum sta…
Homodyne detection of a two-photon resonance assisted by cooperative emission
Chetan Sriram Madasu, Chang Chi Kwong, David Wilkowski +1
Focusing on the transient regime, we explore atomic two-photon spectroscopy with self-aligned homodyne interferometry in a -system with large optical depth. The two light source…
Quantum heat engines and information
Ye Yeo, Chang Chi Kwong
Recently, Zhang {\em et al.} [PRA, {\bf 75}, 062102 (2007)] extended Kieu's interesting work on the quantum Otto engine [PRL, {\bf 93}, 140403 (2004)] by considering as working sub…
Anisotropy and Magnetic Field Effects on the Genuine Multipartite Entanglement of Multi-Qubit Heisenberg {\it XY} Chains
Chang Chi Kwong, Ye Yeo
It has been shown that, for the two-qubit Heisenberg XY model, anisotropy and magnetic field may together be used to produce entanglement for any finite temperature by adjusting th…