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Quantum coherent control of highly multipartite continuous-variable entangled states by tailoring parametric interactions |
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| Authors: | G Patera C Navarrete-Benlloch GJ de Valcárcel C Fabre |
| Institution: | 1. Laboratoire de Physique des Lasers, Atomes et Mol??cules, Universit?? Lille 1, 59655, Villeneuve d??Ascq Cedex, France 2. Departament d????ptica, Universitat de Val??ncia, Dr. Moliner 50, 46100, Burjassot, Spain 3. Max-Planck-Institut f??r Quantenoptik, Hans-Kopfermann-Strasse 1, 85748, Garching, Germany 4. Laboratoire Kastler Brossel, Universit?? Pierre et Marie Curie-Paris 6, ENS, CNRS, 4 place Jussieu CC74, 75252, Paris Cedex 05, France |
| Abstract: | The generation of continuous-variable multipartite entangled states is important for several protocols of quantum information processing and communication, such as one-way quantum computation or controlled dense coding. In this article we theoretically show that multimode optical parametric oscillators can produce a great variety of such states by an appropriate control of the parametric interaction, what we accomplish by tailoring either the spatio-temporal shape of the pump, or the geometry of the nonlinear medium. Specific examples involving currently available optical parametric oscillators are given, hence showing that our ideas are within reach of present technology. |
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