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Download Entanglement via the Quantum Zeno Effect, Phys. Rev. Lett. 100
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Transcript
RESERVOIR-INDUCED ENTANGLEMENT OF TWO TRAPPED IONS IN A CAVITY K. Härkönen1 , F. Plastina2 , K.-A. Suominen1 , and S. Maniscalco1 1 Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland Dipartimento di Fisica, Università della Calabria, & INFN - Gruppo collegato di Cosenza, 87036 Arcavacata di Rende (CS) Italy email: [email protected] 2 Theoretical calculations have shown that it is possible to produce entanglement between two atoms residing in a cavity resonator [1]. The most prominent experimental setup to utilize the idea is considered to be a combination of precisely controllable trapped ions and an optical cavity (e.g. [2]). We study the effect of the inevitable atomic spontaneous emissions and cavity photon losses to the dynamics and look for realistic alternatives to enhance the entanglement production. Figure 1: Simplified view of the problem in hand. Two ions are trapped inside a cavity resonator (grey blocks indicate the mirrors). The isolated ions interact coherently via the cavity photon mode. This induces entanglement between the atomic quantum states. [1] S. Maniscalco, F. Francica, R. L. Zaffino, N. Lo Gullo, and F. Plastina, Protecting Entanglement via the Quantum Zeno Effect, Phys. Rev. Lett. 100, 090503 (2008). [2] G. R. Guthöhrlein, M. Keller, K. Hayasaka, W. Lange, and H. Walther, A single ion as a nanoscopic probe of an optical field, Nature 414, 49 (2001).
