Browsing by Author "Walsworth, Ronald"

Now showing items 21-40 of 74

    • Electromagnetically induced transparency in paraffin-coated vapor cells 

      Klein, Mason Joseph; Hohensee; Phillips, David F.; Walsworth, Ronald Lee (American Physical Society (APS), 2011)
      Antirelaxation coatings in atomic vapor cells allow ground-state coherent spin states to survive many collisions with the cell walls. This reduction in the ground-state decoherence rate gives rise to ultranarrow-bandwidth ...

    • Electromagnetically Induced Transparency with Noisy Lasers 

      Walsworth, Ronald L.; Xiao, Yanhong; Wang, Tun; Baryakhtar, Maria; Van Camp, Mackenzie; Crescimanno, Michael; Hohensee, Michael; Jiang, Liang; Phillips, David Forrest; Lukin, Mikhail D.; Yelin, Susanne F. (American Physical Society, 2009)
      We demonstrate and characterize two coherent phenomena that can mitigate the effects of laser phase noise for Electromagnetically Induced Transparency (EIT): a laser-power-broadening-resistant resonance in the transmitted ...

    • Electromagnetically induced transparency-based slow and stored light in warm atoms 

      Novikova, Irina; Walsworth, Ronald L.; Xiao, Yanhong (Wiley-Blackwell, 2011)
      This paper reviews recent efforts to realize a high-efficiency memory for optical pulses using slow and stored light based on electromagnetically induced transparency (EIT) in ensembles of warm atoms in vapor cells. After ...

    • Enhanced metrology using preferential orientation of nitrogen-vacancy centers in diamond 

      Pham, Linh My; Bar-Gill, N.; LeSage, David Anthony; Belthangady, Chinmay N.; Stacey, A.; Markham, M.; Twitchen, D. J.; Lukin, Mikhail D.; Walsworth, Ronald L. (American Physical Society (APS), 2012)
      We demonstrate preferential orientation of nitrogen-vacancy (NV) color centers along two of four possible crystallographic axes in diamonds grown by chemical vapor deposition on the {100} face. We identify the relevant ...

    • Enhanced solid-state multispin metrology using dynamical decoupling 

      Pham, Linh My; Bar-Gill, N.; Belthangady, Chinmay N.; LeSage, David Anthony; Cappellaro, P.; Lukin, Mikhail D.; Yacoby, Amir; Walsworth, Ronald L. (American Physical Society (APS), 2012)
      We use multipulse dynamical decoupling to increase the coherence lifetime (T2) of large numbers of nitrogen-vacancy (NV) electronic spins in room temperature diamond, thus enabling scalable applications of multispin quantum ...

    • Far-Field Optical Imaging and Manipulation of Individual Spins with Nanoscale Resolution 

      Maurer, Peter; Maze, J. R.; Stanwix, P. L.; Jiang, L.; Gorshkov, Alexey Vyacheslavovich; Zibrov, A. A.; Harke, B.; Hodges, J. S.; Zibrov, Alexander S; Yacoby, Amir; Twitchen, D.; Hell, S. W.; Walsworth, Ronald Lee; Lukin, Mikhail D. (Nature Publishing Group, 2010)
      A fundamental limit to existing optical techniques for measurementand manipulation of spin degrees of freedom is set by diffraction, which does not allow spins separated by less than about a quarter of a micrometre to be ...

    • Fourier magnetic imaging with nanoscale resolution and compressed sensing speed-up using electronic spins in diamond 

      Arai, K.; Belthangady, C; Zhang, Huiliang; Bar-Gill, N.; Devience, S; Cappellaro, P.; Yacoby, Amir; Walsworth, Ronald Lee (Nature Publishing Group, 2015)
      Optically-detected magnetic resonance using Nitrogen Vacancy (NV) color centres in diamond is a leading modality for nanoscale magnetic field imaging,1-3 as it pro-vides single electron spin sensitivity,4 three-dimensional ...

    • A Genetic Strategy for Probing the Functional Diversity of Magnetosome Formation 

      Rahn-Lee, Lilah; Byrne, Meghan E.; Zhang, Manjing; Le Sage, David; Glenn, David R.; Milbourne, Timothy; Walsworth, Ronald L.; Vali, Hojatollah; Komeili, Arash (Public Library of Science, 2015)
      Model genetic systems are invaluable, but limit us to understanding only a few organisms in detail, missing the variations in biological processes that are performed by related organisms. One such diverse process is the ...

    • Gravitational wave detection with optical lattice atomic clocks 

      Kolkowitz, S; Pikovski, Igor; Langellier, Nicholas Ryan; Lukin, Mikhail D.; Walsworth, Ronald Lee; Ye, J. (American Physical Society (APS), 2016)
      We propose a space-based gravitational wave (GW) detector consisting of two spatially separated, drag-free satellites sharing ultrastable optical laser light over a single baseline. Each satellite contains an optical lattice ...

    • HARPS-N Observes the Sun as a Star 

      Dumusque, Xavier; Glenday, Alex; Phillips, David F.; Buchschacher, Nicolas; Cameron, Andrew Collier; Cecconi, Massimo; Charbonneau, David; Cosentino, Rosario; Ghedina, Adriano; Latham, David Winslow; Li, Chih-Hao; Lodi, Marcello; Lovis, Christophe; Molinari, Emilio; Pepe, Francesco; Udry, Stéphane; Sasselov, Dimitar D.; Szentgyorgyi, Andrew H.; Walsworth, Ronald Lee (IOP Publishing, 2015)
      Radial velocity (RV) perturbations induced by stellar surface inhomogeneities including spots, plages and granules currently limit the detection of Earth-twins using Doppler spectroscopy. Such stellar noise is poorly ...

    • High-Resolution Magnetic Resonance Spectroscopy Using a Solid-State Spin Sensor 

      Glenn, David; Bucher, Dominik; Lee, Junghyun; Lukin, Mikhail; Park, Hongkun; Walsworth, Ronald (Springer Nature, 2018-03)
      Quantum systems that consist of solid-state electronic spins can be sensitive detectors of nuclear magnetic resonance (NMR) signals, particularly from very small samples. For example, nitrogen–vacancy centres in diamond ...

    • Improved Constraints on Isotropic Shift and Anisotropies of the Speed of Light Using Rotating Cryogenic Sapphire Oscillators 

      Hohensee, Michael A.; Stanwix, Paul; Tobar, Michael E.; Parker, Steven R.; Phillips, David F.; Walsworth, Ronald L. (American Physical Society, 2010)
      We demonstrate that Michelson-Morley tests, which detect direction-dependent anisotropies in the speed of light, can also be used to place limits upon isotropic deviations of the vacuum speed of light from \(c\), as described ...

    • Improved Quantum Sensing with a Single Solid-State Spin via Spin-to-Charge Conversion 

      Jaskula, Jean-Christophe; Shields, Brendan; Bauch, Erik; Lukin, Mikhail; Trofimov, Alexei; Walsworth, Ronald (American Physical Society (APS), 2019-06-03)
      Efficient optical read-out of single, solid-state electronic spins at room temperature is a key challenge for nanoscale quantum sensing. Nitrogen-vacancy color centers in diamond have a fast optical spin-state read-out ...

    • In-Situ Determination of Astro-Comb Calibrator Lines to Better Than 10 cm \(s^{-1}\) 

      Li, Chih-Hao; Glenday, Alexander Graham; Benedick, Andrew J.; Chang, Guoqing; Chen, Li-Jin; Cramer, Claire; Fendel, Peter; Furesz, Gabor; Kärtner, Franz X.; Korzennik, Sylvain G.; Phillips, David F.; Sasselov, Dimitar D.; Szentgyorgyi, Andrew H.; Walsworth, Ronald Lee (Optical Society of America (OSA), 2010)
      Improved wavelength calibrators for high-resolution astrophysical spectrographs will be essential for precision radial velocity (RV) detection of Earth-like exoplanets and direct observation of cosmological deceleration. ...

    • In-situ determination of astro-comb calibrator lines to better than \(\textrm{10 cm s}^{-1}\) 

      Li, Chih-Hao; Glenday, Alexander G.; Benedick, Andrew J.; Chang, Guoqing; Chen, Li-Jin; Cramer, Claire; Fendel, Peter; Furesz, Gabor; Kärtner, Franz X.; Korzennik, Sylvain G.; Phillips, David M.; Sasselov, Dimitar D.; Szentgyorgyi, Andrew H.; Walsworth, Ronald L. (Optical Society of America, 2010)
      Improved wavelength calibrators for high-resolution astrophysical spectrographs will be essential for precision radial velocity (RV) detection of Earth-like exoplanets and direct observation of cosmological deceleration. ...

    • Limits on Isotropic Lorentz Violation in QED from Collider Physics 

      Hohensee, Michael A.; Lehnert, Ralph; Phillips, David Forrest; Walsworth, Ronald L. (American Institute of Physics, 2009)
      We consider the possibility that Lorentz violation can generate differences between the limiting velocities of light and charged matter. Such effects would lead to efficient vacuum Cherenkov radiation or rapid photon decay. ...

    • Limits to Resolution of CW STED Microscopy 

      Trifonov, Alexei; Jaskula, Jean-Christophe; Teulon, Claire; Glenn, David R.; Bar-Gill, Nir; Walsworth, Ronald Lee (Academic Press (Elsevier BV), 2013)
      We report a systematic theoretical and experimental study of the limits to spatial resolution for stimulated emission depletion (STED) superresolution fluorescence microscopy using continuous wave (CW) laser beams. We ...

    • Low-Loss Negative Refraction by Laser Induced Magneto-Electric Cross-Coupling 

      Kästel, Jürgen; Fleischhauer, Michael; Yelin, Susanne F.; Walsworth, Ronald L. (American Physical Society, 2009)
      We discuss the feasibility of negative refraction with reduced absorption in coherently driven atomic media. Coherent coupling of an electric and a magnetic dipole transition by laser fields induces magneto-electric ...

    • Magnetic Field Imaging with Nitrogen-Vacancy Ensembles 

      Pham, Linh My; Le Sage, David Anthony; Stanwix, Paul L.; Yeung, Tsun Kwan; Glenn, David R.; Trifonov, Alexei; Cappellaro, Paola; Hemmer, Philip; Lukin, Mikhail D.; Park, Hongkun; Yacoby, Amir; Walsworth, Ronald L. (Institute of Physics, 2011)
      We demonstrate a method of imaging spatially varying magnetic fields using a thin layer of nitrogen-vacancy (NV) centers at the surface of a diamond chip. Fluorescence emitted by the two-dimensional NV ensemble is detected ...

    • Magnetic Field Sensing with Nitrogen-Vacancy Color Centers in Diamond 

      Pham, Linh My (2013-09-18)
      In recent years, the nitrogen-vacancy (NV) center has emerged as a promising magnetic sensor capable of measuring magnetic fields with high sensitivity and spatial resolution under ambient conditions. This combination of ...