M. O. Scully, Collective Lamb Shift in Single Photon Dicke Superradiance, Physical Review Letters, vol.102, issue.14, p.143601, 2009.
DOI : 10.1103/PhysRevLett.102.143601

R. H. Lehmberg, -Atom System. I. General Formalism, Physical Review A, vol.2, issue.3, p.883, 1970.
DOI : 10.1103/PhysRevA.2.883

R. Friedberg, S. R. Hartmann, and J. T. Manassah, Frequency shifts in emission and absorption by resonant systems ot two-level atoms, Physics Reports, vol.7, issue.3, p.101, 1973.
DOI : 10.1016/0370-1573(73)90001-X

R. Röhlsberger, K. Schlage, B. Sahoo, S. Couet, and R. Rüffer, Collective Lamb Shift in Single-Photon Superradiance, Science, vol.328, issue.5983, p.1248, 2010.
DOI : 10.1126/science.1187770

J. Keaveney, A. Sargsyan, U. Krohn, I. G. Hughes, D. Sarkisyan et al., Cooperative Lamb Shift in an Atomic Vapor Layer of Nanometer Thickness, Physical Review Letters, vol.108, issue.17, p.173601, 2012.
DOI : 10.1103/PhysRevLett.108.173601

J. Javanainen, J. Ruostekoski, Y. Li, and S. Yoo, Shifts of a Resonance Line in a Dense Atomic Sample, Physical Review Letters, vol.112, issue.11, p.113603, 2014.
DOI : 10.1103/PhysRevLett.112.113603

M. Born and E. Wolf, Principle of Optics, 1999.

O. Morice, Y. Castin, and J. Dalibard, Refractive index of a dilute Bose gas, Physical Review A, vol.51, issue.5, p.3896, 1995.
DOI : 10.1103/PhysRevA.51.3896

J. Ruostekoski and J. Javanainen, Quantum field theory of cooperative atom response: Low light intensity, Physical Review A, vol.55, issue.1, p.513, 1997.
DOI : 10.1103/PhysRevA.55.513

J. Javanainen, J. Ruostekoski, B. Vestergaard, and M. R. Francis, One-dimensional modeling of light propagation in dense and degenerate samples, Physical Review A, vol.59, issue.1, p.649, 1999.
DOI : 10.1103/PhysRevA.59.649

M. Kiffner, M. Macovei, J. Evers, and C. H. Keitel, Vacuum-Induced Processes in Multilevel Atoms, Prog. Opt, vol.55, p.85, 2010.
DOI : 10.1016/B978-0-444-53705-8.00003-5

L. Chomaz, L. Corman, T. Yefsah, R. Desbuquois, and J. Dalibard, Absorption imaging of a quasi-two-dimensional gas: a multiple scattering analysis, New Journal of Physics, vol.14, issue.5, p.55001, 2012.
DOI : 10.1088/1367-2630/14/5/055001

Y. Miroshnychenko, U. V. Poulsen, and K. Molmer, Directional emission of single photons from small atomic samples, Physical Review A, vol.87, issue.2, p.23821, 2013.
DOI : 10.1103/PhysRevA.87.023821

S. D. Jenkins and J. Ruostekoski, Controlled manipulation of light by cooperative response of atoms in an optical lattice, Physical Review A, vol.86, issue.3, p.31602, 2012.
DOI : 10.1103/PhysRevA.86.031602

]. B. Olmos, D. Yu, Y. Singh, F. Schreck, K. Bongs et al., Long-Range Interacting Many-Body Systems with Alkaline-Earth-Metal Atoms, Physical Review Letters, vol.110, issue.14, p.143602, 2013.
DOI : 10.1103/PhysRevLett.110.143602
URL : http://arxiv.org/abs/1211.4537

H. Bender, C. Stehle, S. Slama, R. Kaiser, N. Piovella et al., Observation of cooperative Mie scattering from an ultracold atomic cloud, Physical Review A, vol.82, issue.1, p.11404, 2010.
DOI : 10.1103/PhysRevA.82.011404

M. Chalony, R. Pierrat, D. Delande, and D. Wilkowski, Coherent flash of light emitted by a cold atomic cloud, Physical Review A, vol.84, issue.1, p.11401, 2011.
DOI : 10.1103/PhysRevA.84.011401
URL : https://hal.archives-ouvertes.fr/hal-00581530

T. Bienaimé, S. Bux, E. Lucioni, P. W. Courteille, N. Piovella et al., Observation of a Cooperative Radiation Force in the Presence of Disorder, Physical Review Letters, vol.104, issue.18, p.183602, 2010.
DOI : 10.1103/PhysRevLett.104.183602

S. Balik, A. L. Win, M. D. Havey, I. M. Sokolov, and D. V. Kupriyanov, Rb gas, Physical Review A, vol.87, issue.5, p.53817, 2013.
DOI : 10.1103/PhysRevA.87.053817

R. Bourgain, J. Pellegrino, S. Jennewein, Y. R. Sortais, and A. Browaeys, Direct measurement of the Wigner time delay for the scattering of light by a single atom, Optics Letters, vol.38, issue.11, p.1963, 2013.
DOI : 10.1364/OL.38.001963
URL : https://hal.archives-ouvertes.fr/hal-01102237

R. Bourgain, J. Pellegrino, A. Fuhrmanek, Y. R. Sortais, and A. Browaeys, Evaporative cooling of a small number of atoms in a single-beam microscopic dipole trap, Physical Review A, vol.88, issue.2, p.23428, 2013.
DOI : 10.1103/PhysRevA.88.023428
URL : https://hal.archives-ouvertes.fr/hal-01102107

A. Fuhrmanek, R. Bourgain, Y. R. Sortais, and A. Browaeys, Light-assisted collisions between a few cold atoms in a microscopic dipole trap, Physical Review A, vol.85, issue.6, p.62708, 2012.
DOI : 10.1103/PhysRevA.85.062708
URL : https://hal.archives-ouvertes.fr/hal-01102100

A. Fuhrmanek, Y. R. Sortais, P. Grangier, and A. Browaeys, Measurement of the atom number distribution in an optical tweezer using single-photon counting, Physical Review A, vol.82, issue.2, p.23623, 2010.
DOI : 10.1103/PhysRevA.82.023623
URL : https://hal.archives-ouvertes.fr/hal-00568784

R. Pierrat and R. Carminati, Spontaneous decay rate of a dipole emitter in a strongly scattering disordered environment, Physical Review A, vol.81, issue.6, p.63802, 2010.
DOI : 10.1103/PhysRevA.81.063802

M. Antezza and Y. Castin, Photonic band gap in an imperfect atomic diamond lattice: Penetration depth and effects of finite size and vacancies, Physical Review A, vol.88, issue.3, p.33844, 2013.
DOI : 10.1103/PhysRevA.88.033844
URL : https://hal.archives-ouvertes.fr/hal-00818327

S. D. Jenkins and J. Ruostekoski, Resonance linewidth and inhomogeneous broadening in a metamaterial array, Physical Review B, vol.86, issue.20, p.205128, 2012.
DOI : 10.1103/PhysRevB.86.205128