@article {26101, title = {Finding the nitrogen-vacancy singlet manifold energy level using charge-conversion pulse sequences}, journal = {Phys. Rev. B}, volume = {104}, number = {15}, year = {2021}, pages = {155413}, url = {https://journals.aps.org/prb/abstract/10.1103/PhysRevB.104.155413}, author = {Meirzada, I. and Wolf, S. A. and Bar-Gill, N.} } @article {26100, title = {Long-Time-Scale Magnetization Ordering Induced by an Adsorbed Chiral Monolayer on Ferromagnets}, journal = {ACS Nano}, volume = {15}, number = {3}, year = {2021}, pages = {5574{\textendash}5579}, url = {https://pubs.acs.org/doi/10.1021/acsnano.1c00455}, author = {Meirzada, I. and N. Sukenik and G. Haim and Paltiel, Y. and Bar-Gill, N.} } @article {26099, title = {High-Sensitivity, High-Resolution Detection of Reactive Oxygen Species Concentration Using NV Centers}, journal = {ACS Photonics}, volume = {8}, number = {7}, year = {2021}, pages = {1917{\textendash}1921}, url = {https://pubs.acs.org/doi/10.1021/acsphotonics.1c00431}, author = {Y. Ninio and N. Waiskopf and Meirzada, I. and Y. Romach and G. Haim and Banin, U. and Bar-Gill, N.} } @article {26098, title = {Long-range magnetic dipole-dipole interaction mediated by a superconductor}, journal = {Phys. Rev. Research}, volume = {3}, number = {3}, year = {2021}, pages = {033280}, url = {https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.033280}, author = {Y. Romach and Bar-Gill, N.} } @article {Farfurnik2020, title = {Characterizing spin-bath parameters using conventional and time-asymmetric Hahn-echo sequences}, journal = {Physical Review B}, volume = {101}, number = {10}, year = {2020}, month = {mar}, pages = {104306}, issn = {2469-9950}, doi = {10.1103/PhysRevB.101.104306}, url = {https://link.aps.org/doi/10.1103/PhysRevB.101.104306}, author = {Farfurnik, D. and Bar-Gill, N.} } @article {Bauch2020, title = {Decoherence of ensembles of nitrogen-vacancy centers in diamond}, journal = {Physical Review B}, volume = {102}, number = {13}, year = {2020}, month = {oct}, pages = {134210}, issn = {2469-9950}, doi = {10.1103/PhysRevB.102.134210}, url = {https://link.aps.org/doi/10.1103/PhysRevB.102.134210}, author = {Bauch, Erik and Singh, Swati and Lee, Junghyun and Hart, Connor A. and Schloss, Jennifer M. and Turner, Matthew J. and Barry, John F. and Pham, Linh M. and Nir Bar-Gill and Yelin, Susanne F. and Walsworth, Ronald L.} } @article {Genov2020, title = {Efficient and robust signal sensing by sequences of adiabatic chirped pulses}, journal = {Physical Review Research}, volume = {2}, number = {3}, year = {2020}, month = {aug}, pages = {033216}, issn = {2643-1564}, doi = {10.1103/PhysRevResearch.2.033216}, url = {https://link.aps.org/doi/10.1103/PhysRevResearch.2.033216}, author = {Genov, Genko T. and Ben-Shalom, Yachel and Jelezko, Fedor and Alex Retzker and Nir Bar-Gill} } @article {BenAttar2020, title = {Hamiltonian engineering of general two-body spin-1/2 interactions}, journal = {Physical Review Research}, volume = {2}, number = {1}, year = {2020}, month = {jan}, pages = {013061}, issn = {2643-1564}, doi = {10.1103/PhysRevResearch.2.013061}, url = {https://link.aps.org/doi/10.1103/PhysRevResearch.2.013061}, author = {Ben {\textquoteright}Attar, K. I. O. and Farfurnik, D. and Bar-Gill, N.} } @article {Rao2020, title = {Spin-bath polarization via disentanglement}, journal = {New Journal of Physics}, volume = {22}, number = {8}, year = {2020}, month = {aug}, pages = {083035}, issn = {1367-2630}, doi = {10.1088/1367-2630/aba29a}, url = {https://iopscience.iop.org/article/10.1088/1367-2630/aba29a}, author = {Rao, D D Bhaktavatsala and Ghosh, Arnab and Gelbwaser-Klimovsky, David and Nir Bar-Gill and Gershon Kurizki} } @article {Meirzada2019, title = {Enhanced spin state readout of nitrogen-vacancy centers in diamond using infrared fluorescence}, journal = {Physical Review B}, volume = {100}, number = {12}, year = {2019}, month = {sep}, pages = {125436}, issn = {2469-9950}, doi = {10.1103/PhysRevB.100.125436}, url = {https://link.aps.org/doi/10.1103/PhysRevB.100.125436}, author = {Meirzada, I. and Wolf, S. A. and Naiman, A. and Levy, U. and Bar-Gill, N.} } @article {Romach2019, title = {Measuring Environmental Quantum Noise Exhibiting a Nonmonotonic Spectral Shape}, journal = {Physical Review Applied}, volume = {11}, number = {1}, year = {2019}, month = {jan}, pages = {014064}, issn = {2331-7019}, doi = {10.1103/PhysRevApplied.11.014064}, url = {https://link.aps.org/doi/10.1103/PhysRevApplied.11.014064}, author = {Y. Romach and Lazariev, A. and Avrahami, I. and Klei{\ss}ler, F. and Arroyo-Camejo, S. and Bar-Gill, N.} } @article {Pick2019, title = {Robust mode conversion in NV centers using exceptional points}, journal = {Physical Review Research}, volume = {1}, number = {1}, year = {2019}, month = {aug}, pages = {013015}, issn = {2643-1564}, doi = {10.1103/PhysRevResearch.1.013015}, url = {https://link.aps.org/doi/10.1103/PhysRevResearch.1.013015}, author = {Pick, A. and Silberstein, S. and Moiseyev, N. and Bar-Gill, N.} } @article {Alfasi2018, title = {Exploring the nonlinear regime of light-matter interaction using electronic spins in diamond}, journal = {Physical Review A}, volume = {97}, number = {6}, year = {2018}, month = {jun}, pages = {063808}, issn = {2469-9926}, doi = {10.1103/PhysRevA.97.063808}, url = {https://link.aps.org/doi/10.1103/PhysRevA.97.063808}, author = {Alfasi, Nir and Masis, Sergei and Winik, Roni and Demitry Farfurnik and Shtempluck, Oleg and Nir Bar-Gill and Buks, Eyal} } @article {Meirzada2018, title = {Negative charge enhancement of near-surface nitrogen vacancy centers by multicolor excitation}, journal = {Physical Review B}, volume = {98}, number = {24}, year = {2018}, month = {dec}, pages = {245411}, issn = {2469-9950}, doi = {10.1103/PhysRevB.98.245411}, url = {https://link.aps.org/doi/10.1103/PhysRevB.98.245411}, author = {Meirzada, I. and Hovav, Y. and Wolf, S. A. and Bar-Gill, N.} } @article {PhysRevA.98.033409, title = {Identifying and decoupling many-body interactions in spin ensembles in diamond}, journal = {Phys. Rev. A}, volume = {98}, year = {2018}, month = {Sep}, pages = {033409}, publisher = {American Physical Society}, doi = {10.1103/PhysRevA.98.033409}, url = {https://link.aps.org/doi/10.1103/PhysRevA.98.033409}, author = {Farfurnik, D. and Horowicz, Y. and Bar-Gill, N.} } @article {Hovav2018, title = {Low-Field Nuclear Polarization Using Nitrogen Vacancy Centers in Diamonds}, journal = {Physical Review Letters}, volume = {120}, number = {6}, year = {2018}, month = {feb}, pages = {060405}, issn = {0031-9007}, doi = {10.1103/PhysRevLett.120.060405}, url = {https://link.aps.org/doi/10.1103/PhysRevLett.120.060405}, author = {Hovav, Y. and Naydenov, B. and Jelezko, F. and Bar-Gill, N.} } @article {Farfurnik2018, title = {Spin ensemble-based AC magnetometry using concatenated dynamical decoupling at low temperatures}, journal = {Journal of Optics}, volume = {20}, number = {2}, year = {2018}, month = {jan}, pages = {024008}, issn = {2040-8978}, doi = {10.1088/2040-8986/aaa1bf}, url = {http://stacks.iop.org/2040-8986/20/i=2/a=024008?key=crossref.4c5f1134c0ee61719124abfc73d05798}, author = {Farfurnik, D. and Jarmola, A and Budker, D and Bar-Gill, N} } @article {19197, title = {Quantitative Vectorial Magnetic Imaging of Multi-Domain Rock Forming Minerals Using Nitrogen-Vacancy Centers in Diamond}, journal = {Spin}, volume = {7}, number = {3}, year = {2017}, pages = {1740015}, abstract = {\ Magnetization in rock samples is crucial for paleomagnetometry research, as it harbors valuable geological information on long term processes, such as tectonic movements and the formation of oceans and continents. Nevertheless, current techniques are limited in their ability to measure high spatial resolution and high-sensitivity quantitative vectorial magnetic signatures from individual minerals and micrometer scale samples. As a result, our understanding of bulk rock magnetization is limited, specifically for the case of multi-domain minerals. In this work, we use a newly developed nitrogen-vacancy magnetic microscope, capable of quantitative vectorial magnetic imaging with optical resolution. We demonstrate direct imaging of the vectorial magnetic field of a single, multi-domain dendritic magnetite, as well as the measurement and calculation of the weak magnetic moments of an individual grain on the micron scale. These results pave the way for future applications in paleomagnetometry and for the fundamental understanding of magnetization in multi-domain samples.\ }, url = {https://doi.org/10.1142/S201032471740015X }, author = {E. Farchi and Y. Ebert and Farfurnik, D. and G. Haim and R. Shaar and Bar-Gill, N.} } @article {18475, title = {Enhanced concentrations of nitrogen-vacancy centers in diamond through TEM irradiation}, journal = {Appl. Phys. Lett.}, volume = {111}, year = {2017}, pages = {123101}, url = {http://dx.doi.org/10.1063/1.4993257}, author = {Farfurnik, D. and N. Alfasi and S. Masis and Y. Kauffmann and E. Farchi and Y. Romach and Hovav, Y. and E. Buks and Bar-Gill, N.} } @article {PhysRevA.96.013850, title = {Experimental realization of time-dependent phase-modulated continuous dynamical decoupling}, journal = {Phys. Rev. A}, volume = {96}, year = {2017}, month = {Jul}, pages = {013850}, publisher = {American Physical Society}, doi = {10.1103/PhysRevA.96.013850}, url = {https://link.aps.org/doi/10.1103/PhysRevA.96.013850}, author = {Farfurnik, D. and Aharon, N. and Cohen, I. and Hovav, Y. and Retzker, A. and Bar-Gill, N.} } @article {17881, title = {Observing chemical shifts from nanosamples}, journal = {Science (Perspective)}, volume = {357}, number = {6346}, year = {2017}, pages = {38}, url = {http://science.sciencemag.org/content/357/6346/38.summary?ijkey=dmlBNAJRy1b4k\&keytype=ref\&siteid=sci}, author = {Nir Bar-Gill and Alex Retzker} } @article {PhysRevB.92.235410, title = {Purcell-enhanced optical spin readout of nitrogen-vacancy centers in diamond}, journal = {Phys. Rev. B}, volume = {92}, year = {2015}, month = {Dec}, pages = {235410}, publisher = {American Physical Society}, doi = {10.1103/PhysRevB.92.235410}, url = {http://link.aps.org/doi/10.1103/PhysRevB.92.235410}, author = {Wolf, S. A. and Rosenberg, I. and Rapaport, R. and Bar-Gill, N} } @article {Farfurnik2015, title = {Optimizing a dynamical decoupling protocol for solid-state electronic spin ensembles in diamond}, journal = {Phys. Rev. B}, volume = {92}, year = {2015}, pages = {060301}, issn = {1098-0121}, doi = {10.1103/PhysRevB.92.060301}, url = {http://link.aps.org/doi/10.1103/PhysRevB.92.060301}, author = {Farfurnik, D. and Jarmola, A and Pham, L. M. and Wang, Z. H. and Dobrovitski, V. V. and R. L. Walsworth and Budker, D and Bar-Gill, N} } @article {Arai2014a, title = {Optical magnetic resonance imaging with nanoscale resolution and compressed sensing speed-up}, journal = {Nat. Nanotechnol.}, volume = {Advanced online publication}, year = {2015}, publisher = {Nature Publishing Group}, abstract = {Optically detected magnetic resonance using nitrogen-vacancy (NV) colour centres in diamond is a leading modality for nanoscale magnetic field imaging, as it provides single electron spin sensitivity, three-dimensional resolution better than 1 nm (ref. 5) and applicability to a wide range of physical and biological samples under ambient conditions. To date, however, NV-diamond magnetic imaging has been performed using {\textquoteright}real-space{\textquoteright} techniques, which are either limited by optical diffraction to \~{}250 nm resolution or require slow, point-by-point scanning for nanoscale resolution, for example, using an atomic force microscope, magnetic tip, or super-resolution optical imaging. Here, we introduce an alternative technique of Fourier magnetic imaging using NV-diamond. In analogy with conventional magnetic resonance imaging (MRI), we employ pulsed magnetic field gradients to phase-encode spatial information on NV electronic spins in wavenumber or {\textquoteright}k-space{\textquoteright} followed by a fast Fourier transform to yield real-space images with nanoscale resolution, wide field of view and compressed sensing speed-up.}, issn = {1748-3387}, doi = {10.1038/nnano.2015.171}, url = {http://dx.doi.org/10.1038/nnano.2015.171}, author = {Arai, Keigo and Belthangady, Chinmay and Zhang, Huiliang and Nir Bar-Gill and DeVience, Stephen and Cappellaro, Paola and Lukin, Mikhail D. and Yacoby, Amir and Walsworth, Ronald L.} } @article {DeVience2015, title = {Nanoscale NMR spectroscopy and imaging of multiple nuclear species}, journal = {Nat. Nanotechnol.}, volume = {10}, number = {2}, year = {2015}, pages = {129-134}, publisher = {Nature Publishing Group}, abstract = {Nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) provide non-invasive information about multiple nuclear species in bulk matter, with wide-ranging applications from basic physics and chemistry to biomedical imaging. However, the spatial resolution of conventional NMR and MRI is limited to several micrometres even at large magnetic fields (\>1 T), which is inadequate for many frontier scientific applications such as single-molecule NMR spectroscopy and in vivo MRI of individual biological cells. A promising approach for nanoscale NMR and MRI exploits optical measurements of nitrogen{\textendash}vacancy (NV) colour centres in diamond, which provide a combination of magnetic field sensitivity and nanoscale spatial resolution unmatched by any existing technology, while operating under ambient conditions in a robust, solid-state system. Recently, single, shallow NV centres were used to demonstrate NMR of nanoscale ensembles of proton spins, consisting of a statistical polarization equivalent to \~{}100{\textendash}1,000 spins in uniform samples covering the surface of a bulk diamond chip. Here, we realize nanoscale NMR spectroscopy and MRI of multiple nuclear species (1H, 19F, 31P) in non-uniform (spatially structured) samples under ambient conditions and at moderate magnetic fields (\~{}20 mT) using two complementary sensor modalities.}, issn = {1748-3387}, doi = {10.1038/nnano.2014.313}, url = {http://dx.doi.org/10.1038/nnano.2014.313}, author = {DeVience, Stephen J. and Pham, Linh M. and Lovchinsky, Igor and Sushkov, Alexander O. and Nir Bar-Gill and Belthangady, Chinmay and Casola, Francesco and Corbett, Madeleine and Zhang, Huiliang and Lukin, Mikhail and Park, Hongkun and Yacoby, Amir and Walsworth, Ronald L.} } @article {264, title = {Spectroscopy of surface-induced noise using shallow spins in diamond}, journal = {Phys. Rev. Lett.}, volume = {114}, year = {2015}, pages = {017601}, abstract = {We report on the noise spectrum experienced by few nanometer deep nitrogen-vacancy centers in diamond as a function of depth, surface coating, magnetic field and temperature. Analysis reveals a double-Lorentzian noise spectrum consistent with a surface electronic spin bath in the low frequency regime, along with a faster noise source attributed to surface-modified phononic coupling. These results shed new light on the mechanisms responsible for surface noise affecting shallow spins at semiconductor interfaces, and suggests possible directions for further studies. We demonstrate dynamical decoupling from the surface noise, paving the way to applications ranging from nanoscale NMR to quantum networks.}, url = {http://dx.doi.org/10.1103/PhysRevLett.114.017601}, author = {Y. Romach and C. Muller and T. Unden and L. J. Rogers and T. Isoda and K. M. Itoh and Markham, M and Stacey, A and J. Meijer and S. Pezzagna and B. Naydenov and L. P. McGuinness and Bar-Gill, N and F. Jelezko} } @article {263, title = {Limits to resolution of CW STED microscopy}, journal = {Advances In Atomic, Molecular, and Optical Physics}, volume = {62}, year = {2013}, pages = {279-302}, author = {A. S. Trifonov and J. C. Jaskula and C. Teulon and D. R. Glenn and Bar-Gill, N and R. L. Walsworth} } @article {belthangadydressed-state2013, title = {Dressed-State Resonant Coupling between Bright and Dark Spins in Diamond}, journal = {Physical Review Letters}, volume = {110}, year = {2013}, publisher = {{APS}}, author = {Belthangady, Chinmay and Bar-Gill, N and Pham, Linh My and Arai, Keigo and Le Sage, David and Cappellaro, Paola and Walsworth, R} } @article {bar-gillsolid-state2013, title = {Solid-state electronic spin coherence time approaching one second.}, journal = {Nature communications}, volume = {4}, year = {2013}, abstract = {Solid-state spin systems such as nitrogen-vacancy colour centres in diamond are promising for applications of quantum information, sensing and metrology. However, a key challenge for such solid-state systems is to realize a spin coherence time that is much longer than the time for quantum spin manipulation protocols. Here we demonstrate an improvement of more than two orders of magnitude in the spin coherence time {(T\&\#x2082;)} of nitrogen-vacancy centres compared with previous measurements: T\&\#x2082;\&\#x2248;0.6 s at 77 K. We employed dynamical decoupling pulse sequences to suppress nitrogen-vacancy spin decoherence, and found that T\&\#x2082; is limited to approximately half of the longitudinal spin relaxation time over a wide range of temperatures, which we attribute to phonon-induced decoherence. Our results apply to ensembles of nitrogen-vacancy spins, and thus could advance quantum sensing, enable squeezing and many-body entanglement, and open a path to simulating driven, interaction-dominated quantum many-body Hamiltonians.}, doi = {10.1038/ncomms2771}, url = {http://dx.doi.org/10.1038/ncomms2771}, author = {Bar-Gill, N and Pham, L and Jarmola, A and Budker, D and Walsworth, R} } @article {le sageefficient2012, title = {Efficient photon detection from color centers in a diamond optical waveguide}, journal = {Physical Review B}, volume = {85}, year = {2012}, publisher = {{APS}}, author = {Le Sage, D and Pham, L and Bar-Gill, N and Belthangady, C and Lukin, M and Yacoby, A and Walsworth, R} } @article {phamenhanced2012, title = {Enhanced metrology using preferential orientation of nitrogen-vacancy centers in diamond}, journal = {Physical Review B}, volume = {86}, year = {2012}, publisher = {{APS}}, author = {Pham, L and Bar-Gill, N and Le Sage, D and Belthangady, C and Stacey, A and Markham, M and Twitchen, D and Lukin, M and Walsworth, R} } @article {phamenhanced2012, title = {Enhanced solid-state multispin metrology using dynamical decoupling}, journal = {Physical Review B}, volume = {86}, year = {2012}, publisher = {{APS}}, author = {Pham, Linh My and Bar-Gill, N and Belthangady, Chinmay and Le Sage, David and Cappellaro, Paola and Lukin, M and Yacoby, Amir and Walsworth, R} } @article {bar-gillsuppression2012, title = {Suppression of spin-bath dynamics for improved coherence of multi-spin-qubit systems.}, journal = {Nature communications}, volume = {3}, year = {2012}, abstract = {Multi-qubit systems are crucial for the advancement and application of quantum science. Such systems require maintaining long coherence times while increasing the number of qubits available for coherent manipulation. For solid-state spin systems, qubit coherence is closely related to fundamental questions of many-body spin dynamics. Here we apply a coherent spectroscopic technique to characterize the dynamics of the composite solid-state spin environment of nitrogen-vacancy colour centres in room temperature diamond. We identify a possible new mechanism in diamond for suppression of electronic spin-bath dynamics in the presence of a nuclear spin bath of sufficient concentration. This suppression enhances the efficacy of dynamical decoupling techniques, resulting in increased coherence times for multi-spin-qubit systems, thus paving the way for applications in quantum information, sensing and metrology.}, doi = {10.1038/ncomms1856}, url = {http://dx.doi.org/10.1038/ncomms1856}, author = {Bar-Gill, N and Pham, L and Belthangady, C and Le Sage, D and Cappellaro, P and Maze, J and Lukin, M and Yacoby, A and Walsworth, R} } @article {bar-gillcreating2011, title = {Creating nonclassical states of Bose-Einstein condensates by dephasing collisions.}, journal = {Physical review letters}, volume = {107}, year = {2011}, abstract = {We show, using an exactly solvable model, that nonlinear dynamics is induced in a double-well {Bose-Einstein} condensate {(BEC)} by collisions with a thermal reservoir. This dynamics can facilitate the creation of phase or number squeezing and, at longer times, the creation of macroscopic nonclassical superposition states. Enhancement of these effects is possible by loading the reservoir atoms into an optical lattice.}, author = {Nir Bar-Gill and Rao, D and Gershon Kurizki} } @article {bar-gilleinstein-podolsky-rosen2011, title = {Einstein-Podolsky-Rosen correlations of ultracold atomic gases}, journal = {Physical review letters}, volume = {106}, year = {2011}, abstract = {We demonstrate that collective continuous variables of two species of trapped ultracold bosonic gases can be {Einstein-Podolsky-Rosen-correlated} (entangled) via inherent interactions between the species. We propose two different schemes for creating these correlations{\textendash}a dynamical scheme and a static scheme analogous to two-mode squeezing in quantum optics. We quantify the correlations by using known measures of entanglement and study the effect of finite temperature on these quantum correlations.}, author = {Nir Bar-Gill and Gross, Christian and Mazets, Igor and Oberthaler, Markus and Gershon Kurizki} } @article {grossatomic2011, title = {Atomic homodyne detection of continuous-variable entangled twin-atom states.}, journal = {Nature}, volume = {480}, year = {2011}, pages = {219-223}, abstract = {Historically, the completeness of quantum theory has been questioned using the concept of bipartite continuous-variable entanglement. The non-classical correlations (entanglement) between the two subsystems imply that the observables of one subsystem are determined by the measurement choice on the other, regardless of the distance between the subsystems. Nowadays, continuous-variable entanglement is regarded as an essential resource, allowing for quantum enhanced measurement resolution, the realization of quantum teleportation and quantum memories, or the demonstration of the {Einstein-Podolsky-Rosen} paradox. These applications rely on techniques to manipulate and detect coherences of quantum fields, the quadratures. Whereas in optics coherent homodyne detection of quadratures is a standard technique, for massive particles a corresponding method was missing. Here we report the realization of an atomic analogue to homodyne detection for the measurement of matter-wave quadratures. The application of this technique to a quantum state produced by spin-changing collisions in a {Bose-Einstein} condensate reveals continuous-variable entanglement, as well as the twin-atom character of the state. Our results provide a rare example of continuous-variable entanglement of massive particles. The direct detection of atomic quadratures has applications not only in experimental quantum atom optics, but also for the measurement of fields in many-body systems of massive particles.}, doi = {10.1038/nature10654}, url = {http://dx.doi.org/10.1038/nature10654}, author = {Gross, C and Strobel, H and Nicklas, E and Zibold, T and Bar-Gill, N and Kurizki, G and Oberthaler, M} } @article {bhaktavatsala raogeneration2011, title = {Generation of macroscopic superpositions of quantum states by linear coupling to a bath.}, journal = {Physical review letters}, volume = {106}, year = {2011}, abstract = {We demonstrate through an exactly solvable model that collective coupling to any thermal bath induces effectively nonlinear couplings in a quantum many-body (multispin) system. The resulting evolution can drive an uncorrelated large-spin system with high probability into a macroscopic quantum-superposition state. We discuss possible experimental realizations.}, author = {Bhaktavatsala Rao, D and Nir Bar-Gill and Gershon Kurizki} } @article {bar-gilldynamical2010, title = {Dynamical control of nonlinear symmetry breaking under decoherence}, journal = {Physical Review A}, volume = {82}, year = {2010}, publisher = {{APS}}, author = {Bar-Gill, N and Gershon Kurizki and Malomed, Boris A and Sudheesh, C} } @article {sudheeshtwo-dimensional2010, title = {Two-dimensional solitons in periodically modulated double-well potentials}, journal = {Journal of Physics B: Atomic, Molecular and Optical Physics}, volume = {43}, year = {2010}, publisher = {{IOP} Publishing}, author = {Sudheesh, C and Bar-Gill, N and Malomed, Boris A and Gershon Kurizki} } @article {bar-gilldynamic2009, title = {Dynamic control and probing of many-body decoherence in double-well Bose-Einstein condensates}, journal = {Physical Review A}, volume = {80}, year = {2009}, publisher = {{APS}}, author = {Bar-Gill, N and Gershon Kurizki and Oberthaler, Markus and Davidson, N} } @article {bar-gillshort-time2009, title = {Short-time enhancement of the decay of coherent excitations in Bose-Einstein Condensates.}, journal = {Physical review letters}, volume = {102}, year = {2009}, abstract = {We study, both experimentally and theoretically, short-time modifications of the decay of excitations in a {Bose-Einstein} Condensate {(BEC)} embedded in an optical lattice. Strong enhancement of the decay is observed compared to the Golden Rule results. This enhancement of decay increases with the lattice depth. It indicates that the description of decay modifications of few-body quantum systems also holds for decay of many-body excitations of a {BEC.}}, author = {Nir Bar-Gill and Rowen, Eitan and Gershon Kurizki and Davidson, Nir} } @article {rowenenergy-dependent2008, title = {Energy-dependent damping of excitations over an elongated Bose-Einstein condensate}, journal = {Physical Review A}, volume = {77}, year = {2008}, publisher = {{APS}}, author = {Rowen, E and Bar-Gill, N and Pugatch, R and Davidson, N} } @article {rowenquantum2008, title = {Quantum enhancement of higher-order phononlike excitations of a Bose-Einstein condensate.}, journal = {Physical review letters}, volume = {101}, year = {2008}, abstract = {In a {Bose-Einstein} condensate, the excitation of a Bogoliubov phonon with low momentum (e.g., by a two-photon Bragg process) is strongly suppressed due to destructive interference between two indistinguishable excitation pathways. Here we show that scattering of this sound excitation into a double-momentum mode is strongly enhanced due to constructive interference. This enhancement yields an inherent amplification of second-order sound excitations of the condensate, as we confirm experimentally. We further show that due to parity considerations, this effect is extended to higher-order excitations.}, author = {Rowen, E and Bar-Gill, N and Davidson, N} } @article {275, title = {Spectroscopy of strong-pulse superradiance in a Bose-Einstein condensate}, journal = {Physical Review A}, volume = {76}, number = {4}, year = {2007}, pages = {043603}, author = {Bar-Gill, N and E. E. Rowen and Davidson, N} } @article {kol{\'a}{\v r}path{\textendash}phase2007, title = {Path{\textendash}phase duality with intraparticle translational{\textendash}internal entanglement}, journal = {New Journal of Physics}, volume = {9}, year = {2007}, doi = {10.1088/1367-2630/9/5/129}, url = {http://dx.doi.org/10.1088/1367-2630/9/5/129}, author = {Michal Kol{\'a}{\v r} and Tom{\'a}{\v s} Opatrn{\'y} and Nir Bar-Gill and Noam Erez and Gershon Kurizki} } @article {kol{\'a}{\v r}betting2006, title = {Betting on interferometric paths and phases using translational-internal entanglement: the greedy king game}, journal = {International Journal of Modern Physics B}, volume = {20}, year = {2006}, doi = {10.1142/S0217979206033991}, url = {http://dx.doi.org/10.1142/S0217979206033991}, author = {Michal Kol{\'a}r and tom{\'a}s Opatrn{\'y} and Nir Bar-Gill and Gershon Kurizki} } @article {kurizkicheating2006, title = {Cheating on Complementarity and Interference by Translational {\textendash} Internal Entanglement}, journal = {Quantum Information Processing}, volume = {5}, year = {2006}, doi = {10.1007/s11128-006-0031-4}, url = {http://dx.doi.org/10.1007/s11128-006-0031-4}, author = {Gershon Kurizki and Nir Bar-Gill and Jens Clausen and Michal Kol{\'a}{\v r} and Tom{\'a}{\v s} Opatrn{\'y}} } @article {bar-gillsignatures2006, title = {Signatures of strong momentum localization via entanglement of translational and internal states.}, journal = {Physical review letters}, volume = {97}, year = {2006}, abstract = {We show that atoms or molecules subject to fields that couple their internal and translational (momentum) states may undergo a crossover from randomization (diffusion) to strong localization (sharpening) of their momentum distribution. The predicted crossover should be manifest by a drastic change of the interference pattern as a function of the coupling fields.}, author = {Nir Bar-Gill and Gershon Kurizki} } @article {276, title = {Dynamics of a Lasing Atom in Hot Plasma}, journal = {Eur. Phys. J. D}, volume = {30}, number = {3}, year = {2004}, pages = {317}, author = {Bar-Gill, N and M. Botton and A. Ron} }