An entanglement purification protocol for mixed entangled states is presented via double quantum dot molecules inside a superconducing transmission line resonator （TLR）. In the current scenario, coupling for arbitra...An entanglement purification protocol for mixed entangled states is presented via double quantum dot molecules inside a superconducing transmission line resonator （TLR）. In the current scenario, coupling for arbitrary double quantum dot molecules can be tuned via the TLR in the large detuning region by controlling the qubit level splitting. The TLR is always empty and only virtually excited, so the interaction is insensitive to both the TLR decay and thermal field. Discussion about the feasibility of our scheme shows that the entanglement purification can be implemented with high fidelity and successful probability.展开更多
ISO13584(PLIB) is an international standard, which is established to realize computer’s identification of data expression and data exchange of part library. In this international standard, part expression methodology...ISO13584(PLIB) is an international standard, which is established to realize computer’s identification of data expression and data exchange of part library. In this international standard, part expression methodology of part library is an important characteristic, which distinguishes itself from STEP. So, the methodology is a focus in the research of part library. This article describes the principles of part information expression of part library based on ISO13584, and the research results of the methodology in details.展开更多
We theoretically design a single-mode plasmonic ring nanocavity. Based on the plasmonic cavity, the exciton dynamics between two identical quantum dots （QD-p, QD-q） coupled to the nanocavity are investigated. It is ...We theoretically design a single-mode plasmonic ring nanocavity. Based on the plasmonic cavity, the exciton dynamics between two identical quantum dots （QD-p, QD-q） coupled to the nanocavity are investigated. It is shown that the coupling factors gi （i = p, q） between QD-i and surface plasmons are both equal to 12.53meV in our model and exeiton population swap between the two QDs can be realized. The periods and amplitudes of population oscillations can be modified by the coupling factors. Our results may have potential applications in quantum information and quantum computation on a chip.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 60678022 and 10704001, the Specialized Research Pund for the Doctoral Program of Higher Education under Grant No 20060357008, the Key Program of the Education Department of Anhui Province under Grant Nos KJ2009A048Z, the Talent Project of the Anhui Province for Outstanding Youth under Grant Nos 2010SQRL153ZD and 2010SQRL187.
文摘An entanglement purification protocol for mixed entangled states is presented via double quantum dot molecules inside a superconducing transmission line resonator （TLR）. In the current scenario, coupling for arbitrary double quantum dot molecules can be tuned via the TLR in the large detuning region by controlling the qubit level splitting. The TLR is always empty and only virtually excited, so the interaction is insensitive to both the TLR decay and thermal field. Discussion about the feasibility of our scheme shows that the entanglement purification can be implemented with high fidelity and successful probability.
文摘ISO13584(PLIB) is an international standard, which is established to realize computer’s identification of data expression and data exchange of part library. In this international standard, part expression methodology of part library is an important characteristic, which distinguishes itself from STEP. So, the methodology is a focus in the research of part library. This article describes the principles of part information expression of part library based on ISO13584, and the research results of the methodology in details.
基金Supported by the Natural Science Foundation of China under Grant Nos 10534030 and 10874134, the National Basic Research Program of China under Grant No 2006CB921504, and Key Project of Ministry of Education of China under Grant No 708063.
文摘We theoretically design a single-mode plasmonic ring nanocavity. Based on the plasmonic cavity, the exciton dynamics between two identical quantum dots （QD-p, QD-q） coupled to the nanocavity are investigated. It is shown that the coupling factors gi （i = p, q） between QD-i and surface plasmons are both equal to 12.53meV in our model and exeiton population swap between the two QDs can be realized. The periods and amplitudes of population oscillations can be modified by the coupling factors. Our results may have potential applications in quantum information and quantum computation on a chip.
