Browsing by Author "Pham, Linh"

Now showing items 1-12 of 12

    • Anti-Reflection Coating for Nitrogen-Vacancy Optical Measurements in Diamond 

      Yeung, T. K.; LeSage, David Anthony; Pham, Linh My; Stanwix, P. L.; Walsworth, Ronald L. (American Institute of Physics (AIP), 2012)
      We realize anti-reflection (AR) coatings for optical excitation and fluorescence measurements of nitrogen-vacancy (NV) color centers in bulk diamond by depositing quarter-wavelength thick silica layers on the diamondsurface. ...

    • Coherence of Nitrogen-Vacancy Electronic Spin Ensembles in Diamond 

      Stanwix, Paul L.; Pham, Linh My; Maze, Jeronimo R.; Le Sage, David Anthony; Yeung, Tsun Kwan; Cappellaro, Paola; Hemmer, Philip R.; Yacoby, Amir; Lukin, Mikhail D.; Walsworth, Ronald L. (American Physical Society, 2010)
      We present an experimental and theoretical study of electronic spin decoherence in ensembles of nitrogen-vacancy (NV) color centers in bulk high-purity diamond at room temperature. Under appropriate conditions, we find ...

    • Dressed-State Resonant Coupling between Bright and Dark Spins in Diamond 

      Belthangady, Chinmay N.; Bar-Gill, N.; Pham, Linh My; Arai, K.; Le Sage, David Anthony; Cappellaro, P.; Walsworth, Ronald Lee (American Physical Society, 2013)
      Under ambient conditions, spin impurities in solid-state systems are found in thermally mixed states and are optically “dark”; i.e., the spin states cannot be optically controlled. Nitrogen-vacancy (NV) centers in diamond ...

    • Efficient photon detection from color centers in a diamond optical waveguide 

      LeSage, David Anthony; Pham, Linh My; Bar-Gill, N.; Belthangady, Chinmay N.; Lukin, Mikhail D.; Yacoby, Amir; Walsworth, Ronald L. (American Physical Society (APS), 2012)
      A common limitation of experiments using color centers in diamond is the poor photon collection efficiency of microscope objectives due to refraction at the diamond interface. We present a simple and effective technique ...

    • 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 ...

    • 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 ...

    • Nanoscale NMR spectroscopy and imaging of multiple nuclear species 

      DeVience, Stephen J.; Pham, Linh My; Lovchinsky, Igor; Sushkov, Alexander; Bar-Gill, Nir; Belthangady, Chinmay N.; Casola, Francesco; Corbett, Madeleine; Zhang, Huiliang; Lukin, Mikhail D.; Park, Hongkun; Yacoby, Amir; Walsworth, Ronald Lee (Nature Publishing Group, 2015)
      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 ...

    • NMR technique for determining the depth of shallow nitrogen-vacancy centers in diamond 

      Pham, Linh My; DeVience, Stephen J.; Casola, Francesco; Lovchinsky, Igor; Sushkov, Alexander; Bersin, Eric Alexander; Lee, Junghyun; Urbach, Elana; Cappellaro, Paola; Park, Hongkun; Yacoby, Amir; Lukin, Mikhail D.; Walsworth, Ronald Lee (American Physical Society (APS), 2016)
      We demonstrate a robust experimental method for determining the depth of individual shallow nitrogen-vacancy (NV) centers in diamond with ∼1 nm uncertainty. We use a confocal microscope to observe single NV centers ...

    • Solid-state electronic spin coherence time approaching one second 

      Bar-Gill, N.; Pham, Linh My; Jarmola, A.; Budker, D.; Walsworth, Ronald Lee (Springer Nature, 2013)
      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 ...

    • Suppression of spin-bath dynamics for improved coherence of multi-spin-qubit systems 

      Bar-Gill, N.; Pham, Linh My; Belthangady, Chinmay N.; LeSage, David Anthony; Cappellaro, P.; Maze, J.R.; Lukin, Mikhail D.; Yacoby, Amir; Walsworth, Ronald L. (Springer Nature, 2012)
      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 ...