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15 papers · 2 filters
Probing zero-modes of defect in Kitaev quantum wire
Sheng-Wen Li, Zeng-Zhao Li, C. Y. Cai +1
The Kitaev quantum wire (KQW) model with open boundary possesses two Majorana edge modes. When the local chemical potential on a defect site is much higher than that on other sites…
Threshold for Non-Thermal Stabilization of Open Quantum Systems
C. Y. Cai, Li-Ping Yang, C. P. Sun
We generally study whether or not the information of an open quantum system could be totally erased by its surrounding environment in the long time. For a harmonic oscillator coupl…
Waveguide QED: controllable channel from quantum interference
Qiong Li, Lan Zhou, C. P. Sun
We study a waveguide QED system with a rectangular waveguide and a two-level system (TLS) inside, where the transverse modes TMmn define the quantum channels of guided photons. It…
Tunable single-photon frequency conversion in a Sagnac interferometer
Wei-Bin Yan, Jin-Feng Huang, Heng Fan
We study the single-photon frequency conversion of a five-level emitter coupled to a Sagnac interferometer. We show that the unity conversion efficiency can be achieved either in r…
Zitterbewegung in Bogoliubov's System
Yan Li, Hong-Yi Su, Fu-Lin Zhang +3
We show that Bogoliubov's quasiparticle in superfluid undergoes the Zitterbewegung, as a free relativistic Dirac's electron does. The expectation value of position, as wel…
EIT-like phenomenon with two atomic ensembles in a cavity
Yusuf Turek, Yong Li, C. P. Sun
We study the spectra of collective low excitations of two atomic ensembles coupled indirectly through a single-mode cavity field. When the left ensemble is driven with an external…