Objective The project aims to bring together the concepts of Quantum Imaging and Quantum Information, two branches of the modern quantum physics which demonstrated an extraordinary progress in the last ten years. In the past decade the novel applications of non-classical bright light (in continuous variables) have emerged in the fields such as Quantum Imaging (M.I.Kolobov Rev. Mod. Phys., 71, 1539 (1999)), and Quantum Information (see, for example, the review "Quantum Information with Continuous Variables" by S. L. Brainstein and P. van Loock, Rev. Mod. Phys., 77, 513 (2005), and Zoller P, Beth T, Binosi D, et al. Quantum information processing and communication - Strategic report on current status, visions and goals for research in Europe, European Physical Journal D 36 (2), 203, (2005)).Quantum Imaging investigates the ultimate performance limits of optical imaging allowed by the quantum nature of light. Its techniques show a very high potential for improving the performance in recording, storage, and readout of optical images beyond the limits set by quantum fluctuations of light. Moreover, Quantum Imaging can bring fundamental advantages into the area of Quantum Information due to an intrinsic parallelism of the optical imaging techniques. Quantum Information with continuous variables has witnessed very rapid development in the last decade. This area of quantum physics is of fundamental importance for understanding the quantum limits in information processing and computing. It has also a great potential for future applications such as quantum cryptography and quantum computing. Several quantum information protocols with continuous variables have been proposed theoretically and some of them realized experimentally. All these protocols were primarily developed for single-mode optical fields.The present project is aimed at three research objectives:- Multimode light-matter entanglement in application to quantum information processing and quantum holograms. One of the challenging problems in the field of quantum information is that of the quantum interface between light and matter. An application of such interfaces is a quantum memory for light which allows for the efficient exchange (transfer, storage and readout) of quantum states between light and long-lived matter degrees of freedom. Up to now the work on light-atoms interface has been limited to the case of a single spatial mode of light and a single spatial mode of atomic ensembles. Within this project, we intend to extend this approach to a multimode light-atoms quantum interface. The goal of this research objective is to develop experimentally and theoretically the multimode scheme of quantum memory for light, based on near-resonant interaction of light with the long-lived spin degrees of freedom in optically dense and ultra-cold atomic ensembles. A complementary research of the multimode model of quantum memory for light, based on the electromagnetically induced transparency in cold atomic ensembles is also planned. The idea of generalizing the atomic quantum memory for multimode states of optical fields brings a wealth of new potential applications in processing of quantum information due to the parallelism of such a multimode memory. Within this research objective we are also planning to generalize the previously developed quantum holographic teleportation protocol for multimode states of optical fields adding to it a new and very important feature of frequency conversion. Indeed, a possibility of having a tunable multimode source of light that does not change its quantum state in the tuning process, is very important ingredient in resonant transfer of the quantum state of light into that of atomic ensemble.- Spatio-temporal quantum correlations and entanglement in coupled non-linear optical processes and in arrays of the semiconductor sub-Poissonian lasers and the optical parametric oscillators (OPOs). The entangled light sources are the most important ingredients of any quantum optical protocol and thus the quality of the source plays a crucial role for the quantum information processing and for quantum imaging. Today most theoretical investigations and experimental realizations of multimode nonclassical states of light use an optical parametric amplifier or an optical parametric oscillator as a light source. In the second research objective we propose to investigate alternative sources of multimode non-classical light based on arrays of the phase-locked sub-Poissonian semiconductor lasers or OPOs. The phase matching of the individual emitters is the key feature of our approach. We believe and are intended to test, that it is possible to create a spatially squeezed and entangled light using "bunches" of phase-locked single-mode emitters of non-classical light and the technique of optical mixing. Another promising approach is based on the coupled nonlinear optical processes which can be implemented in the periodically poled nonlinear crystals. We are intended to further explore theoretically the spatially-multimode non-classical light sources, based on the periodically poled parametric crystals and coupled multiple frequency interactions. The gaps in the understanding of quantum peculiarities of such optical processes, as the optical image parametric amplification, the simultaneous parametric amplification and up-conversion of an optical image, the self-frequency parametric conversion in active nonlinear crystals and others will be filled in.- Quantitative measures of channel capacity for essentially multimode quantum channels. Generalization of basic notions from single-mode Quantum Information into parallel multimode Quantum Information call for an accompanying mathematical development of such quantitative measures as channel capacity, fidelity, information content, etc. Our third research objective is devoted to development of this new theory applicable for parallel multimode quantum information channels. We will consider, in a general context of quantum imaging and the continuous variables, the problem of measures for the channel information capacity. To be more specific, we are going to discuss the problem in terms of the Shannon classical information, the Holevo semiclassical and the quantum coherent information. Next, we will apply the information based approaches in order to estimate the quality and efficiency of the concrete schemes, elaborated in this research. In case of successful accomplishment of this research project both areas of Quantum Imaging and Quantum Information with continuous variables will gain a new impulse stimulating future technological applications. Keywords Electromagnetic Processes Nonlinear Optics Physical Optics Quantum Optics Programme(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Topic(s) Data not available Call for proposal Data not available Funding Scheme Data not available Coordinator UNIVERSITÉ DES SCIENCES ET TECHNOLOGIES DE LILLE EU contribution No data Address CITÉ SCIENTIFIQUE, 5 VILLENEUVE D'ASCQ France See on map Total cost No data Participants (5) Sort alphabetically Sort by EU Contribution Expand all Collapse all MOSCOW STATE UNIVERSITY (MGU) Russia EU contribution No data Address UL. AKADEMIKA KHOHLOVA, 1 MOSCOW See on map Total cost No data NIELS BOHR INSTITUTE Denmark EU contribution No data Address BLEGDAMSVEJ, 17 COPENHAGEN See on map Total cost No data ST.PETERSBURG STATE POLYTECHNICAL UNIVERSITY Russia EU contribution No data Address POLYTEKHNICHESKAYA, 29 ST.PETERSBURG See on map Total cost No data ST.PETERSBURG STATE UNIVERSITY Russia EU contribution No data Address ULYANOVSKAYA, 1 ST.PETERSBURG See on map Total cost No data UNIVERSITÉ PIERRE ET MARIE CURIE PARIS VI France EU contribution No data Address CAMPUS JUSSIEU, 74 PARIS See on map Total cost No data
