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Publications

2011
  1. Radim Filip and Ladislav Mišta, Jr., Detecting Quantum States with a Positive Wigner Function beyond Mixtures of Gaussian States, Phys. Rev. Lett. 106, 200401 (2011).
    2.    
  2. C. Gabriel, A. Aiello, W. Zhong, T. G. Euser, N.Y. Joly, P. Banzer, M. Förtsch, D. Elser, U. L. Andersen, Ch. Marquardt, P. St. J. Russell, and G. Leuchs, Entangling Different Degrees of Freedom by Quadrature Squeezing Cylindrically Polarized Modes, Phys. Rev. Lett. 106, 060502 (2011).
    3.    
  3. J. U. Fürst, D. V. Strekalov, D. Elser, A. Aiello, U. L. Andersen, Ch. Marquardt, and G. Leuchs, Quantum Light from a Whispering-Gallery-Mode Disk Resonator, Phys. Rev. Lett. 106, 113901, (2011).
    4.    
  4. T. Sh. Iskhakov, M. V. Chekhova, G. O. Rytikov, and G. Leuchs, Macroscopic Pure State of Light Free of Polarization Noise, Phys. Rev. Lett. 106, 113602 (2011).
    5.    
  5. Leandro Aolita, Augusto J. Roncaglia, Alessandro Ferraro, Antonio Acín, Gapped Two-Body Hamiltonian for continuous-variable quantum computation, Phys. Rev. Lett. 106, 090501 (2011).
    6.    
  6. L. Mista, R. Tatham, D. Girolami, N. Korolkova and G. Adesso, Measurement-induced disturbances and nonclassical correlations of Gaussian states, Phys. Rev. A 83 042325 (2011).
    7.    
  7. A. Zavatta, J. Fiurášek, and M. Bellini, A high-fidelity noiseless amplifier for quantum light states, Nature Photonics 5, 52–56 (2011).
    8.    
  8. O.S. Mishina, M. Scherman, P. Lombardi, J. Ortalo, D. Felinto, A.S. Sheremet, A. Bramati, D.V. Kupriyanov, J. Laurat, and E. Giacobino, Electromagnetically induced transparency on an inhomogeneouly broadened Lambda-transition with multiple excited levels, Phys. Rev. A 83, 053809 (2011).
    9.    
  9. T. Golubeva, Yu. Golubev, O. Mishina, A. Bramati, J. Laurat, E. Giacobino, High speed spatially multimode atomic memory, , Phys. Rev. A 83, 053810 (2011).
    10.    
  10. O. Romero-Isart, A. C. Pflanzer, M. L. Juan, R. Quidant, N. Kiesel, M. Aspelmeyer, and J. I. Cirac, Optically Levitating Dielectrics in the Quantum Regime: Theory and Protocols, , Phys. Rev. A 83, 013803 (2011).
    11.    
2010   
  1. J. U. Fürst, D. V. Strekalov, D. Elser, A. Aiello, U. L. Andersen, Ch. Marquardt, G. Leuchs, Low-Threshold Optical Parametric Oscillations in a Whispering Gallery Mode Resonator, Phys. Rev. Lett. 105, 263904, (2010).
    2.    
  2. I. N. Agafonov, M. V. Chekhova, and G. Leuchs, Two-Color Bright Squeezed Vacuum, Phys. Rev. A 82, 011801(R) (2010).
    3.    
  3. J. Anders, D. K. L. Oi, E. Kashefi, D. E. Brown, E. Andersson, Ancilla-Driven Quantum Computation, Physical Review A 82, 020301(R) (2010).
    4.    
  4. M. Ohliger, K. Kieling, and J. Eisert, ng with Gaussian cluster states, Phys Rev A 82, 042336 (2010).
    5.    
  5. M. Barbieri, N. Spagnolo, M. G. Genoni, F. Ferreyrol, R. Blandino, M.G.A. Paris, P. Grangier, and R. Tualle-Brouri, Non-Gaussianity of quantum states: an experimental test on single-photon added coherent states, Phys. Rev. A 82, 063833 (2010).
    6.    
  6. M. A. Usuga, C. R. Müller, C. Wittmann, P. Marek, R. Filip, Ch. Marquardt, G. Leuchs & U. L. Andersen, Noise-powered probabilistic concentration of phase information, Nature Physics 6, 767–771 (2010)
    7.    
  7. Alexandra S. Sheremet, Leonid V. Gerasimov, Igor M. Sokolov, Dmitriy V. Kupriyanov, Oxana S. Mishina, Elisabeth Giacobino, Julien Laurat, Quantum memory for light via a stimulated off-resonant Raman process: Beyond the three-level-scheme approximation, Phys. Rev. A 82, 033838 (2010).
    8.    
  8. P. Marek, J. Fiurášek, Elementary gates for quantum information with superposed coherent states, , Phys. Rev. A 82, 014304 (2010).
    9.    
  9. Jaromír Fiurášek, Distillation and purification of symmetric entangled Gaussian states, , Phys. Rev. A 82, 042331 (2010).
    10.    
  10. Boris Hage, Aiko Samblowski, James DiGuglielmo, Jaromír Fiurášek, and Roman Schnabel, Iterative Entanglement Distillation: Approaching the Elimination of Decoherence , Phys. Rev. Lett. 105, 230502 (2010).
    11.    
  11. A. Mari, K. Kieling, B. Melholt Nielsen, E. S. Polzik, and J. Eisert, Directly estimating nonclassicality, arXiv:1005.1665.
    12.    
  12. N. Agafonov, M. V. Chekhova, and G. Leuchs, Two-Color Bright Squeezed Vacuum, arXiv:0910.4831v3 [quant-ph], submitted to PRA (2010).
    13.    
  13. J.U. Fürst, D. Strekalov, D. Elser, M. Lassen, U. L. Andersen, Ch. Marquardt, G. Leuchs, Naturally Phase Matched Second Harmonic Generation in a Whispering Gallery Mode Resonator, Phys. Rev. Lett. 104, 153901, (2010)
    14.    
  14. M. Ohliger, K. Kieling, and J. Eisert, Limitations of quantum computing with Gaussian cluster states, arXiv:1004.0081.
    15.    
  15. T.J. Osborne, J. Eisert, F. Verstraete, Holographic quantum states, arXiv:1005.1268.
    16.    
  16. D. Cavalcanti, L. Aolita, A. Ferraro, A. Garcia-Saez, A. Acin, Macroscopic bound entanglement in thermal graph states, New J. Phys. 12, 025011 (2010).
    17.    
  17. F. Ferreyrol, M. Barbieri, R. Blandino, S. Fossier, R. Tualle-Brouri, and P. Grangier, Implementation of a nondeterministic optical noiseless amplifier, Phys. Rev. Lett. 104, 123603 (2010).
    18.    
  18. P. Marek and R. Filip, Coherent-state phase concentration by quantum probabilistic amplification, Phys. Rev. A 81, 022302 (2010).
    19.    
    cc
  19. G. Puentes, A. Datta, A. Feito, J. Eisert, M.B. Plenio, I.A. Walmsley, Entanglement quantification from incomplete measurements: Applications using photon-number resolving weak homodyne detectors, New J. Phys. 12, 033042 (2010).
    20.    
  20. 6. Jonatan B. Brask, Liang Jiang, Alexey V. Gorshkov, Vladan Vuletic, Anders S. Sørensen, and Mikhail D. Lukin, Fast Entanglement Distribution with Atomic Ensembles and Fluorescent Detection, Phys. Rev. A 81, 020303(R) (2010).
    21.    
  21. K. Jensen, W. Wasilewski, H. Krauter, T. Fernholz, B. M. Nielsen, A. Serafini, M. Owari, M. B. Plenio, M. M. Wolf, E. S. Polzik, Quantum memory for entangled two-mode squeezed states, submitted, arXiv:1002.1920 (2010).
    22.    
  22. P. Marek, R. Filip, Noise-resilient quantum interface based on quantum nondemolition interactions, Phys. Rev. A 81, 042325 (2010).
    23.    
  23. Imad H. Agha, Gaétan Messin, and Philippe Grangier, Opt. Express 18, 4198 (2010).
    24.    
  24. Jonatan B. Brask, Ioannes Rigas, Eugene S. Polzik, Ulrik L. Andersen, and Anders S. Sørensen, A Hybrid Long-Distance Entanglement Distribution Protocol, article available at arXiv:1004.0083v2
    25.    
  25. A.E. B. Nielsen, C. A. Muschik, G. Giedke, and K. G. H. Vollbrecht, Quantum state engineering, purification, and number resolved photon detection with high finesse optical cavities, Phys. Rev. A 81, 043832 (2010). 
    26.    
  26. N. Sangouard, C. Simon, N. Gisin, J. Laurat, R. Tualle-Brouri, and P. Grangier, Quantum repeaters with entangled coherent states, J. Opt. Soc. Am. B 27, A137 (2010).
    27.    
  27. C. Wittmann, U. Andersen, and G. Leuchs, Discrimination of optical coherent states using a photon number resolving detector, Journal of Modern Optics 57, 213 - 217 (2010).
    28.    
  28. C. Wittmann, U. L. Andersen, M. Takeoka, D. Sych, and G. Leuchs, Demonstration of Coherent-State Discrimination Using a Displacement-Controlled Photon Number Resolving Detector, Physical Review Letters 104, 100505 (2010).
    29.    
  29. Metin Sabuncu, Radim Filip, Gerd Leuchs, and Ulrik L. Andersen, Environment-assisted quantum-information correction for continuous variables, Physical Review A 81, 012325 (2010).   
    30.    
2009
  1. T. Iskhakov, M. V. Chekhova, and G. Leuchs, Generation and Direct Detection of Broadband Mesoscopic Polarization-Squeezed Vacuum. PRL 102, 183602 (2009).
    2.    
  2. Mandilara, E. Karpov, and N. J. Cerf, Extending Hudson's theorem to mixed quantum states, Phys. Rev. A 79 (2009) 062302.
    3.    
  3. Mandilara, E. Karpov, N. J. Cerf, Non-Gaussianity bounded uncertainty relation for mixed states, arXiv:0910.3473 [quant-ph].
    4.    
  4. J. Fiurášek, Engineering quantum operations on traveling light beams by multiple photon addition and subtraction, Phys. Rev. A 80, 053822 (2009).
    5.    
  5. R. Tualle-Brouri, A. Ourjoumtsev, A. Dantan, P. Grangier, M. Wubs, and A.S. Sørensen, Multimode model for projective photon-counting measurements, Phys. Rev. A 80, 013806 (2009).
    6.       
  6. J. Appel, P. J. Windpassinger, D. Oblak, U. B. Hoff, and N. Kjærgaard, Proc. Natl. Acad. Sci. 106, 10960 (2009).
    7.    
  7. P. J. Windpassinger et al., J. Mod. Opt. 56, 1993 (2009).
    8.    
  8. M. Saffman, D. Oblak, J. Appel, and E. S. Polzik, Phys. Rev. A 79, 023831 (2009).
    9.       
  9. F. Pastawski, A. Kay, N. Schuch, and I. Cirac, How long can a quantum memory withstand depolarizing noise?, Phys Rev. Lett. 103, 080501 (2009).
    10.    
  10. W. Wasilewski, T. Fernholz, K. Jensen, L. S. Madsen, H. Krauter, C. Muschik, and E. S. Polzik, Generation of two-mode squeezed and entangled light in a single temporal and spatial mode, Optics Express, 17, 14444 (2009)
    11.       
  11. J. Ortalo, J. Cviklinski, P. Lombardi, J. Laurat, A. Bramati, M. Pinard, E. Giacobino, Atomic-ensemble-based quantum memory for sideband modulations, J. Phys. B 42, 114010 (2009)
    12.    
  12. Q. Y. He, M. D. Reid, E. Giacobino, J. Cviklinski, and P. D Drummond, Dynamical oscillator-cavity model for quantum memories, Phys. Rev. A 79, 022310 (2009)
    13.    
  13. R. Filip, Quantum interface to a noisy system through a single kind of arbitrary Gaussian coupling with limited interaction strength, Phys. Rev. A 80, 022304 (2009).
    14.    
  14. J. Ortalo, J. Cviklinski, P. Lombardi, J. Laurat, A. Bramati, M. Pinard, E. Giacobino, Atomic-ensemble-based quantum memory for sideband modulations, J. Phys. B 42, 114010 (2009).
    15.       
  15. J. Schäfer, D. Daems, E. Karpov, and N.J. Cerf, Capacity of a bosonic memory channel with Gauss-Markov noise, Phys. Rev. A 80 (2009) 062313. 
    16.    
  16. James DiGuglielmo, Chris Messenger, Jaromir Fiurasek, Boris Hage, Aiko Samblowski, Tabea Schmidt, and Roman Schnabel, Markov Chain Monte Carlo Estimation of Quantum States, arXiv:0902.4603. [pdf]
    17.    
  17. Jeremie Ortalo, Jean Cviklinski, Pietro Lombardi, Julien Laurat, Alberto Bramati, Michel Pinard, and Elisabeth Giacobino, Atomic-ensemble-based quantum memory for sideband modulations, arXiv:0902.4308. [pdf]
    18.    
  18. Jeremie Ortalo, Jean Cviklinski, Pietro Lombardi, Julien Laurat, Alberto Bramati, Michel Pinard, and Elisabeth Giacobino, Atomic-ensemble-based quantum memory for sideband modulations, arXiv:0902.4308. [pdf]
    19.    
  19. Josip Milanovic, Mikael Lassen, Ulrik L. Andersen, and Gerd Leuchs, A Novel Method for Polarization Squeezing with Photonic Crystal Fibers, arXiv:0902.4597. [pdf]
    20.    
  20. T.Sh. Iskhakov, M.V. Chekhova, G. Leuchs, Generation and Direct Detection of Broadband Mesoscopic Polarization-Squeezed Vacuum, arXiv:0901.0371. [pdf]
    21.    
  21. J.S. Lundeen, A. Feito, H. Coldenstrodt-Ronge, K.L. Pregnell, Ch. Silberhorn, T.C. Ralph, J. Eisert, M.B. Plenio, and I.A. Walmsley, Tomography of quantum detectors, Nature Phys. 5, 27 (2009). [pdf]
    22.    
  22. David Menzies and Radim Filip, Gaussian-optimized preparation of non-Gaussian pure states, Phys. Rev. A 79, 012313 (2009). [pdf]
    23.    
    2008
  23. B. Hage, A. Samblowski, J. DiGuglielmo, A. Franzen, J. Fiurasek, and R. Schnabel, Preparation of distilled and purified continuous-variable entangled states, Nature Phys. 4, 915 (2008). [pdf]
    24.    
  24. Ruifang Dong, Mikael Lassen, Joel Heersink, Christoph Marquardt, Radim Filip, Gerd Leuchs, Ulrik L. Andersen, Experimental entanglement distillation of mesoscopic quantum states, Nature Phys. 4, 919 (2008). [pdf]
    25.    
  25. Sidney Burks, Jeremie Ortalo, Antonino Chiummo, Xiaojun Jia, Fabrizio Villa, Alberto Bramati, Julien Laurat, Elisabeth Giacobino, Vacuum squeezed light for atomic memories at the D2 cesium line, arXiv:0812.2611. [pdf]
    26.    
  26. Stephan Smolka, Alexander Huck, Ulrik L. Andersen, Ad Lagendijk, Peter Lodahl, Observation of spatial quantum correlations induced by multiple scattering of non-classical light, arXiv:0811.3561. [pdf]
    27.    
  27. A. Mandilara, E. Karpov, and N. J. Cerf, Towards an extension of the Hudson's theorem to mixed quantum states, arXiv:0808.2501. [pdf]
    28.    
  28. P. Marek, H. Jeong, and M. S. Kim, Generating squeezed superpositions of coherent states using photon addition and subtraction, Phys. Rev. A 78, 063811 (2008). [pdf]
    29.    
  29. A. Flesch, M. Cramer, I.P. McCulloch, U. Schollwoeck, J. Eisert, Probing local relaxation of cold atoms in optical superlattices, arXiv:0808.3779. [pdf]
    30.    
  30. Antonio Acin, Nicolas J. Cerf, Alessandro Ferraro, and Julien Niset, Tests of multimode quantum non-locality using homodyne measurements, arXiv:0808.2373. [pdf]
    31.    
  31. C. Wittmann, D. Elser, U. L. Andersen, R. Filip, P. Marek, and G. Leuchs, Quantum filtering of optical coherent states, Phys. Rev. A 78, 032315 (2008). [pdf]
    32.    
  32. M. Owari, M. B. Plenio, E. S. Polzik, A. Serafini, and M. M. Wolf, Squeezing the limit: Quantum benchmarks for the teleportation and storage of squeezed states, New J. Phys. 10, 113014, (2008). [pdf]
    33.    
  33. Jun-ichi Yoshikawa, Yoshichika Miwa, Alexander Huck, Ulrik L. Andersen, Peter van Loock, and Akira Furusawa, Demonstration of a quantum nondemolition sum gate, Phys. Rev. Lett. 101, 250501 (2008). [pdf]
    34.    
  34. M. Saffman, D. Oblak, J. Appel, and E. S. Polzik, Spin squeezing of atomic ensembles by multi-colour quantum non-demolition measurements, arXiv:0808.0516. [pdf]
    35.    
  35. Ines de Vega, Diego Porras, J. Ignacio Cirac, Matter--wave emission in optical lattices: Single particle and collective effects, arXiv:0807.1901. [pdf]
    36.    
  36. Leonid A. Krivitsky, Ulrik L. Andersen, Ruifang Dong, Alexander Huck, Christoffer Wittmann, and Gerd Leuchs, Electronic noise-free measurements of squeezed light, Opt. Lett. 33 2395 (2008). [pdf]
    37.    
  37. F. Caruso, J. Eisert, V. Giovannetti, and A.S. Holevo, Multi-mode bosonic Gaussian channels, New J. Phys. 10, 083030 (2008). [pdf]
    38.    
  38. M. Cramer, A. Flesch, I.P. McCulloch, U. Schollwoeck, and J. Eisert, Exploring local quantum many-body relaxation by atoms in optical superlattices, Phys. Rev. Lett. 101, 063001 (2008). [pdf]
    39.    
  39. Raul Garcia-Patron and Nicolas J. Cerf, Continuous-variable quantum key distribution protocols over noisy channels, arXiv:0806.3954. [pdf]
    40.    
  40. Christine A. Muschik, Eugene S. Polzik, and J. Ignacio Cirac, Detecting entanglement in two mode squeezed states by particle counting, arXiv:0806.3448. [pdf]
    41.    
  41. Ladislav Mišta, Jr. and Jaromír Fiurášek, Mixed state localizable entanglement for continuous variables, Phys. Rev. A 78, 012359 (2008). [pdf]
    42.  
  42. Metin Sabuncu, Gerd Leuchs, and Ulrik L. Andersen, Experimental continuous variable cloning of partial quantum information, Phys. Rev. A 78, 052312 (2008). [pdf]
    43.    
  43. R. Filip, Excess-noise-free recording and uploading of nonclassical states to continuous-variable quantum memory, Phys. Rev. A 78, 012329 (2008). [pdf]
    44.    
  44. Alejo Salles, Daniel Cavalcanti, and Antonio Acín, Quantum Non-locality and Partial Transposition for Continuous-Variable Systems, Phys. Rev. Lett. 101, 040404 (2008). [pdf]
    45.    
  45. K. Hammerer, M. Aspelmeyer, E.S. Polzik, and P. Zoller, Quantum Interface for Nanomechanics and Atomic Ensembles, arXiv:0804.3005. [pdf]
News & Highlights

>> CV-QIP'10: 7th Workshop on Continuous Variable Quantum Information Processing will take place in Haus der Bayerischen Landwirtschaft, Herrsching (Ammersee), Germany, from June 11 - June 14, 2010.

>> First version of the CV QIP roadmap prepared by the COMPAS consortium is available on-line.

>> Project COMPAS officially started on 1st of April, 2008
We acknowledge the financial support of the Future and Emerging Technologies (FET) programme within the Seventh Framework Programme
for Research of the European Commission, under the FET-Open grant agreement COMPAS, number 212008.