• RAPID COMMUNICATIONS
  • Fundamental concepts
  • Quantum information
  • Atomic and molecular structure and dynamics
  • Atomic and molecular collisions and interactions
  • Photon, electron, atom, and molecule interactions with solids and surfaces
  • Atomic and molecular processes in external fields
  • Matter waves
  • Quantum optics, physics of lasers, nonlinear optics
• ARTICLES
  • Fundamental concepts
  • Quantum information
  • Atomic and molecular structure and dynamics
  • Atomic and molecular collisions and interactions
  • Photon, electron, atom, and molecule interactions with solids and surfaces
  • Clusters (including fullerenes)
  • Atomic and molecular processes in external fields
  • Matter waves
  • Quantum optics, physics of lasers, nonlinear optics
• BRIEF REPORTS
  • Fundamental concepts
  • Quantum information
  • Atomic and molecular structure and dynamics
  • Atomic and molecular collisions and interactions
  • Atomic and molecular processes in external fields
  • Matter waves
  • Quantum optics, physics of lasers, nonlinear optics
• COMMENTS
• ERRATA

RAPID COMMUNICATIONS

Fundamental concepts

Dual symmetric Lagrangians and conservation laws P. D. Drummond pp. R3331-R3334 [View PDF (59 kB) or Buy this Article (Use Article Pack) ]

Quantum information

Individual addressing and state readout of trapped ions utilizing rf micromotion D. Leibfried pp. R3335-R3338 [View PDF (53 kB) or Buy this Article (Use Article Pack) ]

Universality of optimal measurements Rolf Tarrach and Guifré Vidal pp. R3339-R3342 [View PDF (74 kB) or Buy this Article (Use Article Pack) ]

Atomic and molecular structure and dynamics

Exact exchange in linear-response theory R. K. Nesbet pp. R3343-R3346 [View PDF (61 kB) or Buy this Article (Use Article Pack) ]

Coulomb-stable triply charged diatomic: HeY3+ Ralf Wesendrup, Markus Pernpointner, and Peter Schwerdtfeger pp. R3347-R3349 [View PDF (110 kB) or Buy this Article (Use Article Pack) ]

Atomic and molecular collisions and interactions

Dielectronic recombination of ground-state and metastable Li+ ions A. A. Saghiri, J. Linkemann, M. Schmitt, D. Schwalm, A. Wolf, T. Bartsch, A. Hoffknecht, A. Müller, W. G. Graham, A. D. Price, N. R. Badnell, T. W. Gorczyca, and J. A. Tanis pp. R3350-R3353 [View PDF (70 kB) or Buy this Article (Use Article Pack) ]

Production of a nuclearly polarized 3He+ beam by multiple electron capture and stripping collisions M. Tanaka, T. Yamagata, K. Yonehara, T. Takeuchi, Y. Arimoto, M. Fujiwara, Y. Plis, L. W. Anderson, and R. Morgenstern pp. R3354-R3357 [View PDF (277 kB) or Buy this Article (Use Article Pack) ]

Double photoionization of Li and Be+ at high-energy limits Zong-Chao Yan pp. R3358-R3360 [View PDF (35 kB) or Buy this Article (Use Article Pack) ]

Photon, electron, atom, and molecule interactions with solids and surfaces

Dissociative recombination of the CO2+ dication C. P. Safvan, M. J. Jensen, H. B. Pedersen, and L. H. Andersen pp. R3361-R3364 [View PDF (65 kB) or Buy this Article (Use Article Pack) ]

Atomic and molecular processes in external fields

Trap loss in a two-species Na-Cs magneto-optical trap: Intramultiplet mixing in heteronuclear ultracold collisions James P. Shaffer, Witek Chalupczak, and N. P. Bigelow pp. R3365-R3368 [View PDF (68 kB) or Buy this Article (Use Article Pack) ]

Dynamic and geometric alignment of CS2 in intense laser fields of picosecond and femtosecond duration S. Banerjee, G. Ravindra Kumar, and D. Mathur pp. R3369-R3372 [View PDF (141 kB) or Buy this Article (Use Article Pack) ]

Sub-Doppler laser cooling of fermionic 40K atoms G. Modugno, C. Benkő, P. Hannaford, G. Roati, and M. Inguscio pp. R3373-R3376 [View PDF (55 kB) or Buy this Article (Use Article Pack) ]

Dynamics of forced autoionization C. Wesdorp, L. D. Noordam, and F. Robicheaux pp. R3377-R3380 [View PDF (63 kB) or Buy this Article (Use Article Pack) ]

Matter waves

Optical generation of vortices in trapped Bose-Einstein condensates Ł. Dobrek, M. Gajda, M. Lewenstein, K. Sengstock, G. Birkl, and W. Ertmer pp. R3381-R3384 [View PDF (204 kB) or Buy this Article (Use Article Pack) ]

Beam splitter for Bose-Einstein condensates based on Bragg scattering from a cavity mode Frank Burgbacher and Jürgen Audretsch pp. R3385-R3388 [View PDF (185 kB) or Buy this Article (Use Article Pack) ]

Quantum optics, physics of lasers, nonlinear optics

Instabilities in a laser-diode-pumped microchip solid-state laser with feedback K. Otsuka, J.-Y. Ko, J.-L. Chern, K. Ohki, and H. Utsu pp. R3389-R3392 [View PDF (467 kB) or Buy this Article (Use Article Pack) ]

Quantum-jump effects in the motion of a Raman-driven trapped ion C. Di Fidio, S. Wallentowitz, Z. Kis, and W. Vogel pp. R3393-R3396 [View PDF (92 kB) or Buy this Article (Use Article Pack) ]

ARTICLES

Fundamental concepts

•	Bargmann invariants and geometric phases: A generalized connection Eqab M. Rabei, Arvind, N. Mukunda, and R. Simon pp. 3397-3409 [View PDF (161 kB) or Buy this Article (Use Article Pack) ]

•	Casimir effect for two lossy dispersive dielectric slabs R. Matloob, A. Keshavarz, and D. Sedighi pp. 3410-3420 [View PDF (304 kB) or Buy this Article (Use Article Pack) ]

•	Casimir effect between two conducting plates Reza Matloob pp. 3421-3428 [View PDF (151 kB) or Buy this Article (Use Article Pack) ]

•	Variational perturbation theory for density matrices Michael Bachmann, Hagen Kleinert, and Axel Pelster pp. 3429-3443 [View PDF (315 kB) or Buy this Article (Use Article Pack) ]

•	Position-momentum local-realism violation of the Hardy type Bernard Yurke, Mark Hillery, and David Stoler pp. 3444-3447 [View PDF (42 kB) or Buy this Article (Use Article Pack) ]

•	Reflection and transmission in a neutron-spin test of the quantum Zeno effect Ken Machida, Hiromichi Nakazato, Saverio Pascazio, Helmut Rauch, and Sixia Yu pp. 3448-3460 [View PDF (457 kB) or Buy this Article (Use Article Pack) ]

•	Quantum entanglement inferred by the principle of maximum nonadditive entropy Sumiyoshi Abe and A. K. Rajagopal pp. 3461-3466 [View PDF (139 kB) or Buy this Article (Use Article Pack) ]

•	Fractional Fourier operators and generalized Wigner functions S. Chountasis, A. Vourdas, and C. Bendjaballah pp. 3467-3473 [View PDF (149 kB) or Buy this Article (Use Article Pack) ]

•	How to protect the interpretation of the wave function against protective measurements Jos Uffink pp. 3474-3481 [View PDF (131 kB) or Buy this Article (Use Article Pack) ]

•	Coordinate realizations of deformed Lie algebras with three generators R. Dutt, A. Gangopadhyaya, C. Rasinariu, and U. Sukhatme pp. 3482-3486 [View PDF (63 kB) or Buy this Article (Use Article Pack) ]

•	Complete roughness and conductivity corrections for Casimir force measurement G. L. Klimchitskaya, Anushree Roy, U. Mohideen, and V. M. Mostepanenko pp. 3487-3495 [View PDF (182 kB) or Buy this Article (Use Article Pack) ]

Quantum information

•	Volume of the set of separable states. II Karol Życzkowski pp. 3496-3507 [View PDF (227 kB) or Buy this Article (Use Article Pack) ]

•	Quantum computation with quantum dots and terahertz cavity quantum electrodynamics Mark S. Sherwin, Atac Imamoglu, and Thomas Montroy pp. 3508-3514 [View PDF (98 kB) or Buy this Article (Use Article Pack) ]

Atomic and molecular structure and dynamics

•	Experimental verification of the existence of the gas-phase dianions BeF42- and MgF42- Roy Middleton and Jeff Klein pp. 3515-3521 [View PDF (156 kB) or Buy this Article (Use Article Pack) ]

•	Two-electron self-energy corrections to the 2p1/2-2s transition energy in Li-like ions V. A. Yerokhin, A. N. Artemyev, T. Beier, G. Plunien, V. M. Shabaev, and G. Soff pp. 3522-3540 [View PDF (233 kB) or Buy this Article (Use Article Pack) ]

•	Simple method for constructing accurate atomic Kohn-Sham potentials A. I. Al-Sharif, A. Qteish, and R. Resta pp. 3541-3546 [View PDF (91 kB) or Buy this Article (Use Article Pack) ]

•	Effects of electron correlation, relativity, and nuclear structure on hyperfine constants of Be+ and F6+ Jacek Bieroń, Per Jönsson, and Charlotte Froese Fischer pp. 3547-3557 [View PDF (90 kB) or Buy this Article (Use Article Pack) ]

•	Ground state of the carbon atom in strong magnetic fields M. V. Ivanov and P. Schmelcher pp. 3558-3568 [View PDF (185 kB) or Buy this Article (Use Article Pack) ]

•	Lifetimes of the 2s22p 2Po–2s2p2 4P intercombination transitions of C+ S. J. Smith, A. Chutjian, and J. B. Greenwood pp. 3569-3574 [View PDF (98 kB) or Buy this Article (Use Article Pack) ]

•	Nuclear quadrupole moments from molecular microwave data: The quadrupole moment of 85Rb and 87Rb nuclei and survey of molecular data for alkali-metal nuclei Vladimir Kellö and Andrzej J. Sadlej pp. 3575-3585 [View PDF (96 kB) or Buy this Article (Use Article Pack) ]

•	Phase-amplitude method for calculating resonance energies and widths for one-dimensional potentials Emil Y. Sidky and Itzik Ben-Itzhak pp. 3586-3592 [View PDF (86 kB) or Buy this Article (Use Article Pack) ]

•	Proton structure effects in muonic hydrogen Krzysztof Pachucki pp. 3593-3598 [View PDF (69 kB) or Buy this Article (Use Article Pack) ]

•	Density-functional-theory calculations of the total energies, ionization potentials, and optical response properties with the van Leeuwen–Baerends potential Arup Banerjee and Manoj K. Harbola pp. 3599-3603 [View PDF (48 kB) or Buy this Article (Use Article Pack) ]

•	Adiabatic formulation of heteronuclear hydrogen molecular ion B. D. Esry and H. R. Sadeghpour pp. 3604-3617 [View PDF (145 kB) or Buy this Article (Use Article Pack) ]

•	Pursuit of N-representability for the contracted Schrödinger equation through density-matrix reconstruction David A. Mazziotti pp. 3618-3626 [View PDF (91 kB) or Buy this Article (Use Article Pack) ]

•	Long-lived states of N2-: Formation, lifetimes, and identity T. Andersen, K. A. Bertelsen, M. K. Raarup, N. Rud, J. Olsen, and L. Veseth pp. 3627-3632 [View PDF (71 kB) or Buy this Article (Use Article Pack) ]

•	Density-functional study of small molecules within the Krieger-Li-Iafrate approximation Yong-Hoon Kim, Martin Städele, and Richard M. Martin pp. 3633-3640 [View PDF (89 kB) or Buy this Article (Use Article Pack) ]

•	Calculation of the positron bound state with the copper atom V. A. Dzuba, V. V. Flambaum, G. F. Gribakin, and C. Harabati pp. 3641-3647 [View PDF (81 kB) or Buy this Article (Use Article Pack) ]

•	Fast-beam laser lifetime measurements of the cesium 6p 2P1/2,3/2 states Robert J. Rafac, Carol E. Tanner, A. Eugene Livingston, and H. Gordon Berry pp. 3648-3662 [View PDF (810 kB) or Buy this Article (Use Article Pack) ]

Atomic and molecular collisions and interactions

•	Infrared-laser control of vibrational state redistribution during molecular dissociation: The time-dependent flux method in model simulations for HONO2 in the excited electronic state M. Oppel and G. K. Paramonov pp. 3663-3666 [View PDF (98 kB) or Buy this Article (Use Article Pack) ]

•	Double photoionization of helium: The hyperspherical R-matrix method with semiclassical outgoing waves L. Malegat, P. Selles, and A. Kazansky pp. 3667-3676 [View PDF (141 kB) or Buy this Article (Use Article Pack) ]

•	Unitarity constraints in modified effective-range theory Leonard Rosenberg pp. 3677-3683 [View PDF (82 kB) or Buy this Article (Use Article Pack) ]

•	Low-energy electron scattering by CF4, CCl4, SiCl4, SiBr4, and SiI4 Márcio T. Varella, Alexandra P. Natalense, Márcio H. Bettega, and Marco A. Lima pp. 3684-3693 [View PDF (173 kB) or Buy this Article (Use Article Pack) ]

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Experimental investigation of state-selective single and double electron capture in slow C5+-He collisions Hualin Zhang, X. Fléchard, A. Cassimi, L. Adoui, F. Frémont, D. Lecler, G. Cremer, L. Guillaume, D. Lelievre, A. Lepoutre, and D. Hennecart pp. 3694-3701 [View PDF (143 kB) or Buy this Article (Use Article Pack) ]

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Absolute cross sections for the photoionization of atomic oxygen: 2s-electron ionization and satellite production in the threshold energy range O. Wilhelmi, G. Mentzel, B. Zimmermann, K.-H. Schartner, H. Liebel, H. Schmoranzer, and B. M. McLaughlin pp. 3702-3711 [View PDF (286 kB) or Buy this Article (Use Article Pack) ]

•	Measurement of electron-impact excitation into the 3p53d and 3p55s levels of argon using Fourier-transform spectroscopy J. Ethan Chilton and Chun C. Lin pp. 3712-3721 [View PDF (210 kB) or Buy this Article (Use Article Pack) ]

•	Screening effect in electromagnetic production of electron-positron pairs in relativistic nucleus-atom collisions Jianshi Wu, J. H. Derrickson, T. A. Parnell, and M. R. Strayer pp. 3722-3726 [View PDF (68 kB) or Buy this Article (Use Article Pack) ]

•	Monoelectronic and dielectronic processes producing K-shell vacancies in slow Neq++CH4 collisions (q=3–9) F. Frémont, C. Bedouet, X. Husson, J.-Y. Chesnel, and N. Stolterfoht pp. 3727-3733 [View PDF (109 kB) or Buy this Article (Use Article Pack) ]

•	Effect of the projectile charge on the ionization and excitation of hydrogen molecules by fast ion impact E. Wells, I. Ben-Itzhak, K. D. Carnes, and Vidhya Krishnamurthi pp. 3734-3739 [View PDF (206 kB) or Buy this Article (Use Article Pack) ]

•	Use of two-body close-coupling formalisms to calculate three-body breakup cross sections T. N. Rescigno, C. W. McCurdy, W. A. Isaacs, and M. Baertschy pp. 3740-3749 [View PDF (120 kB) or Buy this Article (Use Article Pack) ]

•	Dielectronic recombination rate coefficients for excited states of He from He+ Jian-Guo Wang, Takako Kato, and Izumi Murakami pp. 3750-3755 [View PDF (154 kB) or Buy this Article (Use Article Pack) ]

•	Lifetime of Efimov states of negative two-atom ions F. M. Pen’kov pp. 3756-3763 [View PDF (100 kB) or Buy this Article (Use Article Pack) ]

•	Excitation and charge transfer in proton-lithium collisions at 5–15 keV M. S. Pindzola pp. 3764-3768 [View PDF (77 kB) or Buy this Article (Use Article Pack) ]

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Dissociative recombination of vibrationally excited HD+: State-selective experimental investigation Z. Amitay, A. Baer, M. Dahan, J. Levin, Z. Vager, D. Zajfman, L. Knoll, M. Lange, D. Schwalm, R. Wester, A. Wolf, I. F. Schneider, and A. Suzor-Weiner pp. 3769-3785 [View PDF (343 kB) or Buy this Article (Use Article Pack) ]

Photon, electron, atom, and molecule interactions with solids and surfaces

•	Production of metastable negative ions in a cesium sputter source: Verification of the existence of N2- and CO- Roy Middleton and Jeff Klein pp. 3786-3799 [View PDF (407 kB) or Buy this Article (Use Article Pack) ]

•	L-shell filling of N6+ and O7+ ions from a clean and LiF-covered Au(111) surface H. Khemliche, T. Schlathölter, R. Hoekstra, and R. Morgenstern pp. 3800-3808 [View PDF (281 kB) or Buy this Article (Use Article Pack) ]

Clusters (including fullerenes)

•	Optical response of small silver clusters K. Yabana and G. F. Bertsch pp. 3809-3814 [View PDF (78 kB) or Buy this Article (Use Article Pack) ]

Atomic and molecular processes in external fields

•	Nonlinear decoherence in quantum state preparation of a trapped ion Le-Man Kuang, Hao-Sheng Zeng, and Zhao-Yang Tong pp. 3815-3819 [View PDF (63 kB) or Buy this Article (Use Article Pack) ]

•	Adiabatic population transfer via multiple intermediate states N. V. Vitanov and S. Stenholm pp. 3820-3832 [View PDF (200 kB) or Buy this Article (Use Article Pack) ]

•	Transition state in atomic physics Charles Jaffé, David Farrelly, and T. Uzer pp. 3833-3850 [View PDF (279 kB) or Buy this Article (Use Article Pack) ]

•	Dynamical cooling of trapped gases. II: Many-atom problem Luis Santos and Maciej Lewenstein pp. 3851-3866 [View PDF (583 kB) or Buy this Article (Use Article Pack) ]

•	Optical pumping of Cs atoms in solid 4He S. Lang, S. Kanorsky, T. Eichler, R. Müller-Siebert, T. W. Hänsch, and A. Weis pp. 3867-3877 [View PDF (386 kB) or Buy this Article (Use Article Pack) ]

•	Laser-free slow atom source B. Ghaffari, J. M. Gerton, W. I. McAlexander, K. E. Strecker, D. M. Homan, and R. G. Hulet pp. 3878-3881 [View PDF (126 kB) or Buy this Article (Use Article Pack) ]

•	Slowing and cooling molecules and neutral atoms by time-varying electric-field gradients Jason A. Maddi, Timothy P. Dinneen, and Harvey Gould pp. 3882-3891 [View PDF (166 kB) or Buy this Article (Use Article Pack) ]

•	Hyperfine-changing collision measurements in trap loss for mixed species in a magneto-optical trap M. S. Santos, P. Nussenzveig, A. Antunes, P. S. Cardona, and V. S. Bagnato pp. 3892-3895 [View PDF (51 kB) or Buy this Article (Use Article Pack) ]

•	Semiclassical model of the electron-impact ionization of hydrogen in the presence of a strong laser field J. L. Sanz and H.-J. Kull pp. 3896-3902 [View PDF (82 kB) or Buy this Article (Use Article Pack) ]

•	Sympathetic cooling and detection of molecular ions in a Penning trap M. A. van Eijkelenborg, M. E. Storkey, D. M. Segal, and R. C. Thompson pp. 3903-3910 [View PDF (108 kB) or Buy this Article (Use Article Pack) ]

•	Excitation of the NO molecule by chirped infrared laser pulses J. T. Lin, M. Hayashi, S. H. Lin, and T. F. Jiang pp. 3911-3915 [View PDF (89 kB) or Buy this Article (Use Article Pack) ]

•	Two-electron effects in the multiphoton ionization of magnesium with 400-nm 150-fs pulses D. Xenakis, N. E. Karapanagioti, D. Charalambidis, H. Bachau, and E. Cormier pp. 3916-3923 [View PDF (113 kB) or Buy this Article (Use Article Pack) ]

•	Strong-field photoionization of vibrational ground-state H2+ and D2+ molecules C. Trump, H. Rottke, and W. Sandner pp. 3924-3928 [View PDF (117 kB) or Buy this Article (Use Article Pack) ]

•	Rotational channel interactions of vibrationally excited np Rydberg states of the triatomic hydrogen molecule R. Reichle, I. Mistrík, U. Müller, and H. Helm pp. 3929-3942 [View PDF (223 kB) or Buy this Article (Use Article Pack) ]

•	Intensity dependence of plateau structures in laser-assisted x-ray–atom scattering processes Dejan B. Milošević and Anthony F. Starace pp. 3943-3946 [View PDF (79 kB) or Buy this Article (Use Article Pack) ]

•	Laser-induced stabilization of autoionizing states Heider N. Ereifej and J. G. Story pp. 3947-3951 [View PDF (60 kB) or Buy this Article (Use Article Pack) ]

•	Simple model for harmonic generation from atomic clusters Valérie Véniard, Richard Taïeb, and Alfred Maquet pp. 3952-3959 [View PDF (120 kB) or Buy this Article (Use Article Pack) ]

•	Kinetic theory of the magneto-optical trap for multilevel atoms Jin Woo Jun, Soo Chang, Taeg Yong Kwon, Ho Seong Lee, and V. G. Minogin pp. 3960-3972 [View PDF (176 kB) or Buy this Article (Use Article Pack) ]

Matter waves

•	Collisionless modes of a trapped Bose gas M. J. Bijlsma and H. T. Stoof pp. 3973-3981 [View PDF (117 kB) or Buy this Article (Use Article Pack) ]

•	Quasiperiodic Fresnel atom optics, focusing, and the quasi-Talbot effect J. L. Cohen, B. Dubetsky, and P. R. Berman pp. 3982-3989 [View PDF (120 kB) or Buy this Article (Use Article Pack) ]

•	First- and second-order coherence of scattered laser light from a trapped Bose-Einstein condensate Hiroki Saito and Masahito Ueda pp. 3990-3998 [View PDF (171 kB) or Buy this Article (Use Article Pack) ]

•	Atom holography O. Zobay, E. V. Goldstein, and P. Meystre pp. 3999-4005 [View PDF (97 kB) or Buy this Article (Use Article Pack) ]

•	Dark states of dressed Bose-Einstein condensates E. S. Lee, C. Geckeler, J. Heurich, A. Gupta, Kit-Iu Cheong, S. Secrest, and P. Meystre pp. 4006-4011 [View PDF (69 kB) or Buy this Article (Use Article Pack) ]

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Properties of microelectromagnet mirrors as reflectors of cold Rb atoms M. Drndić, G. Zabow, C. S. Lee, J. H. Thywissen, K. S. Johnson, M. Prentiss, R. M. Westervelt, P. D. Featonby, V. Savalli, L. Cognet, K. Helmerson, N. Westbrook, C. I. Westbrook, W. D. Phillips, and A. Aspect pp. 4012-4015 [View PDF (125 kB) or Buy this Article (Use Article Pack) ]

Quantum optics, physics of lasers, nonlinear optics

•	Floquet theory of intracavity laser frequency modulation S. Longhi and P. Laporta pp. 4016-4028 [View PDF (185 kB) or Buy this Article (Use Article Pack) ]

•	Recovering coherence from decoherence: A method of quantum-state reconstruction H. Moya-Cessa, J. A. Roversi, S. M. Dutra, and A. Vidiella-Barranco pp. 4029-4033 [View PDF (71 kB) or Buy this Article (Use Article Pack) ]

•	Wigner functions, squeezing properties, and slow decoherence of a mesoscopic superposition of two-level atoms M. G. Benedict and A. Czirják pp. 4034-4044 [View PDF (1618 kB) or Buy this Article (Use Article Pack) ]

•	Probing colored noise from the index of refraction of strongly driven two-level atoms G. A. Prataviera, S. S. Mizrahi, V. V. Dodonov, and J. R. Brinati pp. 4045-4051 [View PDF (132 kB) or Buy this Article (Use Article Pack) ]

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Experimental and theoretical study of monomode vectorial lasers passively Q switched by a Cr4+: yttrium aluminum garnet absorber Marc Brunel, Olivier Emile, Marc Vallet, Fabien Bretenaker, Albert Le Floch, Laurent Fulbert, Jean Marty, Bernard Ferrand, and Engin Molva pp. 4052-4058 [View PDF (266 kB) or Buy this Article (Use Article Pack) ]

•	Excess noise for coherent radiation propagating through amplifying random media M. Patra and C. W. Beenakker pp. 4059-4066 [View PDF (122 kB) or Buy this Article (Use Article Pack) ]

•	Three-dimensional nonperturbative analysis of spontaneous emission in a Fabry-Perot microcavity Ho Trung Dung and Kikuo Ujihara pp. 4067-4082 [View PDF (245 kB) or Buy this Article (Use Article Pack) ]

•	Light amplification without stimulated emission: Beyond the standard quantum limit to the l