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List of publications:


M. Jachura, M. Karpinski, C. Radzewicz, K. Banaszek, High-visibility nonclassical interference of photon pairs generated in a multimode nonlinear waveguide, Optics Express 22(7), pp 8624-8632 (2014) DOI:10.1364/OE.22.008624

T. Wasak, P. Szankowski, R. Bucker, J. Chwedenczuk, M. Trippenbach, Bogoliubov theory for atom scattering into separate regions, New Journal of Physics 16, 013041 (2014) DOI:10.1088/1367-2630/16/1/013041

R. Chrapkiewicz, W. Wasilewski, C. Radzewicz, How to measure diffusional decoherence in multimode rubidium vapor memories?, Optics Communications 371, pp 1-6 (2014) DOI:10.1016/j.optcom.2013.12.020


M. Parniak, W. Wasilewski, Direct observation of atomic diffusion in warm rubidium ensembles, Appl. Phys. B 116(2), pp 415-421 (2013) DOI: 10.1007/s00340-013-5712-y

M. Krych, Z. Idziaszek, Quantum analysis of atom-ion sympathetic cooling in the presence of micromotion, preprint arXiv:1312.0279

K. Banaszek, P. Horodecki, M. Karpiński, Cz. Radzewicz, Quaantum mechanical which-way experiment with an internal degree of freedom, Nature Communications 4, 2594 (2013) DOI:10.1038/ncomms3594

T. Wasak, J. Chwedenczuk, L. Pezze, A. Smerzi, Optimal measurements in phase estimation: simple examples, preprint arXiv:1310.2844

M. Parniak, W. Wasilewski, Direct observation of atomic diffusion in warm rubidium ensembles, preprint arXiv:1308.2528

M. Jarzyna, K. Banaszek, Rafał Demkowicz-Dobrzański, Dephasing in coherent communication with weak signal states, preprint arXiv:1307.6871

P. Deuar, T. Wasak, P. Zin, J. Chwedenczuk, M. Trippenbach, Tradeoffs for number squeezing in collisions of Bose-Einstein condensates, Phys. Rev. A 88, 013617 (2013) DOI:10.1103/PhysRevA.88.041802

R. Chaves, J. B. Brask, M. Markiewicz, J. Kolodynski, A. Acin, Noisy metrology beyond the standard quantum limit, Phys. Rev. Lett. 111, 120401 (2013) DOI:10.1103/PhysRevLett.111.120401

K. Jachymski, M.Krych, P.S. Julienne, Z. Idziaszek, Quantum theory of reactive collisions for 1/r^n potentials, Phys. Rev. Lett. 110, 213202 (2013) DOI:10.1103/PhysRevLett.110.213202

R. Demkowicz-Dobrzański, K. Banaszek, R. Schnabel, Fundamental quantum interferometry bound for the squeezed-light-enhanced gravitational-wave detector GEO600, Phys. Rev. A 88, 041802(R) (2013) DOI:10.1103/PhysRevA.88.013617

M. Lasota, R. Demkowicz-Dobrzanski, K. Banaszek, Quantum key distribution with realistic heralded single photon sources, Int. J. Quant. Inf. 11, 1350034 (2013) DOI:10.1142/S0219749913500342

M. Jarzyna, R. Demkowicz-Dobrzański, Matrix product states for quantum metrology, Phys. Rev. Lett. 110, 240405 (2013) DOI:10.1103/PhysRevLett.110.240405

J. Kolodynski, R. Demkowicz-Dobrzanski, Efficient tools for quantum metrology with uncorrelated noise, New Journal of Physics 15, 073043 (2013) DOI:10.1088/1367-2630/15/7/073043

R. Chrapkiewicz, W. Wasilewski and Cz. Radzewicz, How to measure diffusional decoherence in multimode Rubidum vapor memories?, preprint arXiv:1304.5396

J. Chwedenczuk, F. Piazza and A. Smerzi, Multi-path Interferometer with Ultracold Atoms Trapped in an Optical Lattice, Phys. Rev. A 87, 033607 (2013) DOI:10.1103/PhysRevA.87.033607

P. Fita, P. Ciacka, I. Czerski, M. Pietraszkiewicz, C. Radzewicz, J. Waluk, Double Hydrogen Transfer in Low Symmetry Porphycene, Zeitschrift für Physikalische Chemie, Ahead of Print, DOI:10.1524/zpch.2013.0372


R. Chrapkiewicz, W. Wasilewski, Generation and delayed retrieval of spatially multimode Raman scattering in warm rubidium vapors, Optics Express 20(28), 29540 (2012) DOI:10.1364/OE.20.029540

P. Szankowski, J. Chwedenczuk, M. Trippenbach, Memory in an N--qubit System as a Resource of the Decoherence Slow-Down with Application to Quantum Interferometry, preprint arXiv:1212.2528

R. Demkowicz-Dobrzanski, J. Kolodynski, M. Guta, The elusive Heisenberg limit in quantum-enhanced metrology, Nature Communications 3, 1063 (2012) DOI:10.1038/ncomms2067

T. Wasak, J. Chwedenczuk, P. Zin and M. Trippenbach, Raman scattering of atoms from a quasi-condensate in a perturbative regime, Phys. Rev. A 86, 043621 (2012) DOI:10.1103/PhysRevA.86.043621

Joanna A. Zielińska, Federica A. Beduini, Nicolas Godbout, and Morgan W. Mitchell, Ultranarrow Faraday rotation filter at the Rb D1 line, Opt. Lett. Opt. Lett. 37, 524-526 (2012) DOI: 10.1364/OL.37.000524

J. Kołodyński, J. Chwedeńczuk, W. Wasilewski, Eigenmode description of Raman scattering in atomic vapors in the presence of decoherence, Phys. Rev. A 86, 013818 (2012) DOI: 10.1103/PhysRevA.86. 013818

M. Jarzyna, R. Demkowicz-Dobrzański, Quantum interferometry with and without an external phase reference, Phys. Rev. A 85, 011801(R) (2012) DOI: 10.1103/PhysRevA.85.011801


K. Jensen, W. Wasilewski, H. Krauter, T. Fernholz, B. M. Nielsen, M. Owari, M. B. Plenio, A. Serafini, M. M. Wolf, E. S. Polzik, Quantum memory for entangled continuous-variable states, Nature Physics 7, 13–16 (2011) DOI: 10.1038/nphys1819

K. Dobek, M. Karpiński, R. Demkowicz-Dobrzański, K. Banaszek, P. Horodecki, Experimental Extraction of Secure Correlations from a Noisy Private State, Phys. Rev. Lett. 106, 030501 (2011) DOI:10.1103/PhysRevLett.106.030501

J. Galinis, M. Karpiński, G. Tamošauskas, K. Dobek, A. Piskarskas, Photon coincidences in spontaneous parametric down-converted radiation excited by a blue LED in bulk LiIO3 crystal, Opt. Express 19, 10351–10358 (2011) DOI:10.1364/OE.19.010351

J. Chwedeńczuk, F. Piazza, A. Smerzi, Phase Estimation from Atom Position Measurements,
New J. Phys. 13, 065023 (2011) DOI: 10.1088/1367-2630/13/6/065023

P. Szańkowski, E. Infeld, M. Trippenbach, Class of compact entities in three-component Bose-Einstein condensates, Phys. Rev. A 83, 013626 (2011) DOI: 10.1103/PhysRevA.83.013626

P. Deuar, P. Ziń, J. Chwedeńczuk, M. Trippenbach, Mean field effects on the scattered atoms in condensate collisions, Eur. Phys. J. D 60, 063625 (2011) DOI: 10.1140/epjd/e2011-20066-7

P. Deuar, J. Chwedeńczuk, M. Trippenbach, P. Ziń, Bogoliubov dynamics of condensate collisions using the positive-P representation, Phys. Rev. A 83, 063625 (2011) DOI: 10.1103/PhysRevA.83.063625

R. Demkowicz-Dobrzański, Optimal phase estimation with arbitrary a priori knowledge, Phys. Rev. A 83, 061802(R) (2011) DOI: 10.1103/PhysRevA.83.061802


J. Kołodyński, R. Demkowicz-Dobrzański, Phase estimation without a priori knowledge-losses imply shot noise scaling, Phys. Rev. A 82, 053804 (2010) DOI: 10.1103/PhysRevA.82.053804

T. Wasak, P. Szańkowski, W. Wasilewski, K. Banaszek, Entanglement-based signature of nonlocal dispersion cancellation, Phys. Rev. A 82, 052120 (2010) DOI: 10.1103/PhysRevA.82.052120

M. Kacprowicz, R. Demkowicz-Dobrzanski, W. Wasilewski, K. Banaszek, I. A. Walmsley, Experimental quantum-enhanced estimation of a lossy phase shift, Nature Photonics 4, 357 - 360 (2010) DOI: 10.1038/nphoton.2010.39

W. Wasilewski, K. Jensen, H. Krauter, J. J. Renema, M. V. Balabas, E. S. Polzik, Quantum Noise Limited and Entanglement-Assisted Magnetometry, Phys. Rev. Lett. 104, 133601 (2010),

M. V. Balabas, K. Jensen, W. Wasilewski, H. Krauter, L. S. Madsen, J. H. Müller, T. Fernholz, E. S. Polzik, High quality anti-relaxation coating material for alkali atom vapor cells, Opt. Express 18, 5825-5830 (2010) DOI: 10.1364/OE.18.005825

P. Migdał, W. Wasilewski, Noise reduction in 3D noncollinear parametric amplifier, Appl. Phys. B. 99, 657-671 (2010) DOI: 10.1007/s00340-010-3915-z

R. Chrapkiewicz, W. Wasilewski, Multimode Spontaneous Parametric Down-Conversion in the Lossy Medium, J. Mod. Opt. 57, 345-355 (2010) DOI: 10.1080/09500341003642588

P. Szańkowski, E. Infeld, M. Trippenbach, G. Rowlands, Oscillating Solitons in a Three-Component Bose-Einstein Condensate, Phys. Rev. Lett. 105, 125302 (2010) DOI: 10.1103/PhysRevLett.105.125302

Paper on the optimality of quantum enhancement in the GEO600 gravitational wave detector published
It is theoretically demonstrated that the recently reported quantum-noise-limited sensitivity of the squeezed-light-enhanced German-British gravitational wave detector GEO 600 is exceedingly close to the fundamental theoretical bound, given the present amount of optical loss. Furthermore, it is proven that the employed combination of a bright coherent state and a squeezed vacuum state is generally the optimum practical approach for phase estimation with high precision on absolute scales. [Demkowicz-Dobrzanski et al, Phys. Rev. A 88, 041802(R) (2013)]