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6 papers · 2 filters
Reduced Dirac Equation and Lamb Shift as an Off-mass-shell effect in Quantum Electrodynamics
Guang-jiong Ni, Jianjun Xu, Senyue Lou
Based on the precision experimental data of energy-level differences in hydrogenlike atoms, especially the 1S-2S transition of hydrogen and deuterium, the necessity of establishing…
Initial Decoherence and Loss of Entanglement of Open Two-Qubit Systems
Xian-Ting Liang
In this paper we investigate a open two-qubit model whose dynamics is not exactly solvable. When the initial state is the maximum entangled state, as the exactly solvable open two-…
Non-Markov dynamics and phonon decoherence of a double quantum dot charge qubit
Xian-Ting Liang
In this paper we investigate decoherence times of a double quantum dot (DQD) charge qubit due to it coupling with acoustic phonon baths. We individually consider the acoustic piezo…
Decoherence of Josephson charge qubit
Xian-Ting Liang
In this paper we investigate decoherence time of superconducting Josephson charge qubit (JCQ). Two kinds of methods, iterative tensor multiplication (ITM) method derived from the q…
Multipartite entangled state representation and its squeezing transformation
Sergio Albeverio, Shao-Ming Fei, Tong-qiang Song
The multipartite entangled state for the total momentum and relative coordinates of n particles is constructed. The corresponding quantum mechanical operator…
Short-time decoherence of Josephson charge qubits in Ohmic and 1/f noise environment
Xian-Ting Liang
In this paper we investigate the short-time decoherence from Ohmic and 1/f noise of single Josephson charge qubit (JCQ). At first, we use the short-time approximation to obtain the…