David Phillips

Physicist, Smithonian Astrophysical Observatory, and QTC Collaborator

Ph.D. Physics, Harvard University, 1996
B.S. Physics, Caltech, 1988

David’s research interests center around: (i) Searches for planets around other stars in which he has developed instrumentation to improve searches for Earth-like exoplanets first by building “astro-combs”, laser frequency comb based wavelength calibrators for astrophysical spectrographs and then building a small solar telescope designed to observe the Sun as a Star and study the effects of stellar activity on the measured solar radial velcotiy; and (ii) searches for dark matter using novel detectors in which directional information about the potential dark matter interaction can be read out from a solid-state detector composed of diamond or other similar high-density or high-purity materials.

Fun Fact: David has visited Madagascar. Here, you can see lemurs climbing over him and eating out of his hands!

Notable Publications

  • Directional detection of dark matter using solid-state quantum sensing. Reza Ebadi, Mason C. Marshall, David F. Phillips, Johannes Cremer, Tao Zhou, Michael Titze, Pauli Kehayias, Maziar Saleh Ziabari, Nazar Delegan, Surjeet Rajendran, Alexander O. Sushkov, F. Joseph Heremans, Edward S. Bielejec, Martin V. Holt, and Ronald L. Walsworth. AVS Quantum Science 4, 044701 (2022). link PDF
    BibTeX
    arXiv
  • High-Precision Mapping of Diamond Crystal Strain Using Quantum Interferometry. Mason C. Marshall, Reza Ebadi, Connor Hart, Matthew J. Turner, Mark J.H. Ku, David F. Phillips, and Ronald L. Walsworth. Phys. Rev. Applied 17, 024041 (2022). link PDF
    BibTeX
    arXiv

  • Scanning X-Ray Diffraction Microscopy for Diamond Quantum Sensing. Mason C. Marshall, David F. Phillips, Matthew J. Turner, Mark J. H. Ku, Tao Zhou, Nazar Delegan, F. Joseph Heremans, Martin V. Holt, and Ronald L. Walsworth. Phys. Rev. Applied 16, 054032 (2021). link PDF supplement
    BibTeX
    arXiv
  • Estimating Magnetic Filling Factors from Simultaneous Spectroscopy and Photometry: Disentangling Spots, Plage, and Network. T. W. Milbourne, D. F. Phillips, N. Langellier, A. Mortier, R. D. Haywood, S. H. Saar, H. M. Cegla, A. Collier Cameron, X. Dumusque, D. W. Latham, L. Malavolta, J. Maldonado, S. Thompson, A. Vanderburg, C. A. Watson, L. A. Buchhave, M. Cecconi, R. Cosentino, A. Ghedina, M. Gonzalez, M. Lodi, M. López-Morales, A. Sozzetti, and R. L. Walsworth. The Astrophysical Journal 920, 21 (2021). link PDF
    BibTeX
    arXiv
  • Ultraheavy dark matter search with electron microscopy of geological quartz. Reza Ebadi, Anubhav Mathur, Erwin H. Tanin, Nicholas D. Tailby, Mason C. Marshall, Aakash Ravi, Raisa Trubko, Roger R. Fu, David F. Phillips, Surjeet Rajendran, and Ronald L. Walsworth. Phys. Rev. D 104, 015041 (2021). link PDF
    BibTeX
    arXiv
  • Detection Limits of Low-mass, Long-period Exoplanets Using Gaussian Processes Applied to HARPS-N Solar Radial Velocities. N. Langellier, T. W. Milbourne, D. F. Phillips, R. D. Haywood, S. H. Saar, A. Mortier, L. Malavolta, S. Thompson, A. Collier Cameron, X. Dumusque, H. M. Cegla, D. W. Latham, J. Maldonado, C. A. Watson, N. Buchschacher, M. Cecconi, D. Charbonneau, R. Cosentino, A. Ghedina, M. Gonzalez, C-H. Li, M. Lodi, M. López-Morales, G. Micela, E. Molinari, F. Pepe, E. Poretti, K. Rice, D. Sasselov, A. Sozzetti, S. Udry, and R. L. Walsworth. The Astronomical Journal 161, 287 (2021). link PDF
    BibTeX
    arXiv
  • Milky Way Accelerometry via Millisecond Pulsar Timing. David F. Phillips, Aakash Ravi, Reza Ebadi, and Ronald L. Walsworth. Phys. Rev. Lett. 126, 141103 (2021). link PDF supplement
    BibTeX
    arXiv
  • Directional detection of dark matter with diamond. Mason C Marshall, Matthew J Turner, Mark J H Ku, David F Phillips, and Ronald L Walsworth. Quantum Science and Technology 6, 024011 (2021). link PDF
    BibTeX
    arXiv

  • The spectral impact of magnetic activity on disc-integrated HARPS-N solar observations: exploring new activity indicators. A. P. G. Thompson, C. A. Watson, R. D. Haywood, J. C. Costes, E. de Mooij, A. Collier Cameron, X. Dumusque, D. F. Phillips, S. H. Saar, A. Mortier, T. W. Milbourne, S. Aigrain, H. M. Cegla, D. Charbonneau, R. Cosentino, A. Ghedina, D. W. Latham, M. López-Morales, G. Micela, E. Molinari, E. Poretti, A. Sozzetti, S. Thompson, and R. Walsworth. Monthly Notices of the Royal Astronomical Society 494, 4279–4290 (2020). link PDF
    BibTeX
    arXiv
  • Testing the Spectroscopic Extraction of Suppression of Convective Blueshift. M. Miklos, T. W. Milbourne, R. D. Haywood, D. F. Phillips, S. H. Saar, N. Meunier, H. M. Cegla, X. Dumusque, N. Langellier, J. Maldonado, L. Malavolta, A. Mortier, S. Thompson, C. A. Watson, M. Cecconi, R. Cosentino, A. Ghedina, C.H. Li, M. López-Morales, E. Molinari, Ennio Poretti, D. Sasselov, A. Sozzetti, and R. L. Walsworth. The Astrophysical Journal 888, 117 (2020). link PDF
    BibTeX
    arXiv

  • Probing Dark Matter Using Precision Measurements of Stellar Accelerations. Aakash Ravi, Nicholas Langellier, David F. Phillips, Malte Buschmann, Benjamin R. Safdi, and Ronald L. Walsworth. Physical Review Letters 123, 091101 (2019). link PDF supplement
    BibTeX
    arXiv
  • Three years of Sun-as-a-star radial-velocity observations on the approach to solar minimum. A. Collier Cameron, A. Mortier, D. Phillips, X. Dumusque, R. D. Haywood, N. Langellier, C. A. Watson, H. M. Cegla, J. Costes, D. Charbonneau, A. Coffinet, D. W. Latham, M. López-Morales, L. Malavolta, J. Maldonado, G. Micela, T. Milbourne, E. Molinari, S. H. Saar, S. Thompson, N. Buchschacher, M. Cecconi, R. Cosentino, A. Ghedina, A. Glenday, M. Gonzalez, C.-H. Li, M. Lodi, C. Lovis, F. Pepe, E. Poretti, K. Rice, D. Sasselov, A. Sozzetti, A. Szentgyorgyi, S. Udry, and R. Walsworth. Monthly Notices of the Royal Astronomical Society 487, 1082–1100 (2019). link PDF
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    arXiv
  • HARPS-N Solar RVs Are Dominated by Large, Bright Magnetic Regions. T. W. Milbourne, R. D. Haywood, D. F. Phillips, S. H. Saar, H. M. Cegla, A. C. Cameron, J. Costes, X. Dumusque, N. Langellier, D. W. Latham, J. Maldonado, L. Malavolta, A. Mortier, M. L. Palumbo III, S. Thompson, C. A. Watson, F. Bouchy, N. Buchschacher, M. Cecconi, D. Charbonneau, R. Cosentino, A. Ghedina, A. G. Glenday, M. Gonzalez, C.-H. Li, M. Lodi, M. López-Morales, C. Lovis, M. Mayor, G. Micela, E. Molinari, F. Pepe, G. Piotto, K. Rice, D. Sasselov, D. Ségransan, A. Sozzetti, A. Szentgyorgyi, S. Udry, and R. L. Walsworth. The Astrophysical Journal 874, 107 (2019). link PDF
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    arXiv

  • Visible-Spanning Flat Supercontinuum for Astronomical Applications. Aakash Ravi, Matthias Beck, David F. Phillips, Albrecht Bartels, Dimitar Sasselov, Andrew Szentgyorgyi, and Ronald L. Walsworth. Journal of Lightwave Technology 36, 5309–5315 (2018). link PDF
    BibTeX
    arXiv

  • Astro-comb calibrator and spectrograph characterization using a turn-key laser frequency comb. Aakash Ravi, David F. Phillips, Matthias Beck, Leopoldo L. Martin, Massimo Cecconi, Adriano Ghedina, Emilio Molinari, Albrecht Bartels, Dimitar Sasselov, Andrew Szentgyorgyi, and Ronald L. Walsworth. Journal of Astronomical Telescopes, Instruments, and Systems 3, 045003 (2017). link PDF
    BibTeX
    arXiv

  • An astro-comb calibrated solar telescope to search for the radial velocity signature of Venus. David F. Phillips, Alex G. Glenday, Xavier Dumusque, Nicolas Buchschacher, Andrew Collier Cameron, Massimo Cecconi, David Charbonneau, Rosario Cosentino, Adriano Ghedina, Raphaëlle Haywood, David W. Latham, Chih-Hao Li, Marcello Lodi, Christophe Lovis, Emilio Molinari, Francesco Pepe, Dimitar Sasselov, Andrew Szentgyorgyi, Stephane Udry, and Ronald L. Walsworth. Proceedings of SPIE 9912, 99126Z (2016). link PDF
    BibTeX
  • State of the Field: Extreme Precision Radial Velocities. Debra A. Fischer, Guillem Anglada-Escude, Pamela Arriagada, Roman V. Baluev, Jacob L. Bean, Francois Bouchy, Lars A. Buchhave, Thorsten Carroll, Abhijit Chakraborty, Justin R. Crepp, Rebekah I. Dawson, Scott A. Diddams, Xavier Dumusque, Jason D. Eastman, Michael Endl, Pedro Figueira, Eric B. Ford, Daniel Foreman-Mackey, Paul Fournier, Gabor Fűrész, B. Scott Gaudi, Philip C. Gregory, Frank Grundahl, Artie P. Hatzes, Guillaume Hébrard, Enrique Herrero, David W. Hogg, Andrew W. Howard, John A. Johnson, Paul Jorden, Colby A. Jurgenson, David W. Latham, Greg Laughlin, Thomas J. Loredo, Christophe Lovis, Suvrath Mahadevan, Tyler M. McCracken, Francesco Pepe, Mario Perez, David F. Phillips, Peter P. Plavchan, Lisa Prato, Andreas Quirrenbach, Ansgar Reiners, Paul Robertson, Nuno C. Santos, David Sawyer, Damien Segransan, Alessandro Sozzetti, Tilo Steinmetz, Andrew Szentgyorgyi, Stéphane Udry, Jeff A. Valenti, Sharon X. Wang, Robert A. Wittenmyer, and Jason T. Wright. Publications of the Astronomical Society of the Pacific 128, 066001 (2016). link PDF
    BibTeX
    arXiv

  • HARPS-N observes the Sun as a star. Xavier Dumusque, Alex Glenday, David F. Phillips, Nicolas Buchschacher, Andrew Collier Cameron, Massimo Cecconi, David Charbonneau, Rosario Cosentino, Adriano Ghedina, David W. Latham, Chih-Hao Li, Marcello Lodi, Christophe Lovis, Emilio Molinari, Francesco Pepe, Stéphane Udry, Dimitar Sasselov, Andrew Szentgyorgyi, and Ronald Walsworth. The Astrophysical Journal 814, L21 (2015). link PDF
    BibTeX
    arXiv
  • Operation of a broadband visible-wavelength astro-comb with a high-resolution astrophysical spectrograph. Alexander G. Glenday, Chih-Hao Li, Nicholas Langellier, Guoqing Chang, Li-Jin Chen, Gabor Furesz, Alexander A. Zibrov, Franz Kärtner, David F. Phillips, Dimitar Sasselov, Andrew Szentgyorgyi, and Ronald L. Walsworth. Optica 2, 250–254 (2015). link PDF supplement
    BibTeX

  • Optimization of filtering schemes for broadband astro-combs. Guoqing Chang, Chih-Hao Li, David F. Phillips, Andrew Szentgyorgyi, Ronald L. Walsworth, and Franz X. Kärtner. Optics Express 20, 24987–25013 (2012). link PDF
    BibTeX
  • Covariant Quantization of Lorentz-Violating Electromagnetism. Michael A. Hohensee, David F. Phillips, and Ronald L. Walsworth. arXiv:1210.2683 [hep-ph, physics:quant-ph] (2012). PDF
    BibTeX
    arXiv
  • Conjugate Fabry-Perot cavity pair for improved astro-comb accuracy. Chih-Hao Li, Guoqing Chang, Alexander G. Glenday, Nicholas Langellier, Alexander Zibrov, David F. Phillips, Franz X. Kärtner, Andrew Szentgyorgyi, and Ronald L. Walsworth. Optics Letters 37, 3090–3092 (2012). link PDF
    BibTeX
  • Calibration of an astrophysical spectrograph below 1 m/s using a laser frequency comb. David F. Phillips, Alexander G. Glenday, Chih-Hao Li, Claire Cramer, Gabor Furesz, Guoqing Chang, Andrew J. Benedick, Li-Jin Chen, Franz X. Kärtner, Sylvain Korzennik, Dimitar Sasselov, Andrew Szentgyorgyi, and Ronald L. Walsworth. Optics Express 20, 13711–13726 (2012). link PDF
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  • Electromagnetically induced transparency in paraffin-coated vapor cells. M. Klein, M. Hohensee, D. F. Phillips, and R. L. Walsworth. Physical Review A 83, 013826 (2011). link PDF
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  • Improved constraints on isotropic shift and anisotropies of the speed of light using rotating cryogenic sapphire oscillators. Michael A. Hohensee, Paul L. Stanwix, Michael E. Tobar, Stephen R. Parker, David F. Phillips, and Ronald L. Walsworth. Physical Review D 82, 076001 (2010). link PDF
    BibTeX
    arXiv
  • Visible wavelength astro-comb. Andrew J. Benedick, Guoqing Chang, Jonathan R. Birge, Li-Jin Chen, Alexander G. Glenday, Chih-Hao Li, David F. Phillips, Andrew Szentgyorgyi, Sylvain Korzennik, Gabor Furesz, Ronald L. Walsworth, and Franz X. Kärtner. Optics Express 18, 19175–19184 (2010). link PDF
    BibTeX
  • In-situ determination of astro-comb calibrator lines to better than 10 cm/s. Chih-Hao Li, Alexander G. Glenday, Andrew J. Benedick, Guoqing Chang, Li-Jin Chen, Claire Cramer, Peter Fendel, Gabor Furesz, Franz X. Kärtner, Sylvain Korzennik, David F. Phillips, Dimitar Sasselov, Andrew Szentgyorgyi, and Ronald L. Walsworth. Optics Express 18, 13239–13249 (2010). link PDF
    BibTeX
    arXiv
  • Toward a broadband astro-comb: effects of nonlinear spectral broadening in optical fibers. Guoqing Chang, Chih-Hao Li, David F. Phillips, Ronald L. Walsworth, and Franz X. Kärtner. Optics Express 18, 12736–12747 (2010). link PDF
    BibTeX
    arXiv
  • Coherent-population-trapping resonances with linearly polarized light for all-optical miniature atomic clocks. Sergei A. Zibrov, Irina Novikova, David F. Phillips, Ronald L. Walsworth, Alexander S. Zibrov, Vladimir L. Velichansky, Alexey V. Taichenachev, and Valery I. Yudin. Physical Review A 81, 013833 (2010). link PDF
    BibTeX
    arXiv

  • Electromagnetically induced transparency with noisy lasers. Yanhong Xiao, Tun Wang, Maria Baryakhtar, Mackenzie Van Camp, Michael Crescimanno, Michael Hohensee, Liang Jiang, David F. Phillips, Mikhail D. Lukin, Susanne F. Yelin, and Ronald L. Walsworth. Physical Review A 80, 041805 (2009). link PDF
    BibTeX
  • Slow light in narrow paraffin-coated vapor cells. M. Klein, M. Hohensee, A. Nemiroski, Y. Xiao, D. F. Phillips, and R. L. Walsworth. Applied Physics Letters 95, 091102 (2009). link PDF
    BibTeX
  • Limits on isotropic Lorentz violation in QED from collider physics. Michael A. Hohensee, Ralf Lehnert, David F. Phillips, and Ronald L. Walsworth. Physical Review D 80, 036010 (2009). link PDF
    BibTeX
    arXiv
  • Slow-light dynamics from electromagnetically-induced-transparency spectra. M. Klein, M. Hohensee, Y. Xiao, R. Kalra, D. F. Phillips, and R. L. Walsworth. Physical Review A 79, 053833 (2009). link PDF
    BibTeX
  • Particle-Accelerator Constraints on Isotropic Modifications of the Speed of Light. Michael A. Hohensee, Ralf Lehnert, David F. Phillips, and Ronald L. Walsworth. Physical Review Letters 102, 170402 (2009). link PDF
    BibTeX
    arXiv
  • Slow light and EIT under realistic (imperfect) conditions. Mason Klein, Yanhong Xiao, Michael Hohensee, David F. Phillips, and Ronald L. Walsworth. Proceedings of SPIE, 72260H (2009). link PDF
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  • Limits on Anomalous Spin-Spin Couplings between Neutrons. Alexander G. Glenday, Claire E. Cramer, David F. Phillips, and Ronald L. Walsworth. Physical Review Letters 101, 261801 (2008). link PDF
    BibTeX
  • Repeated interaction model for diffusion-induced Ramsey narrowing. Yanhong Xiao, Irina Novikova, David F. Phillips, and Ronald L. Walsworth. Optics Express 16, 14128–14141 (2008). link PDF
    BibTeX
  • Slow Light Beam Splitter. Yanhong Xiao, Mason Klein, Michael Hohensee, Liang Jiang, David F. Phillips, Mikhail D. Lukin, and Ronald L. Walsworth. Physical Review Letters 101, 043601 (2008). link PDF
    BibTeX
  • Lineshape asymmetry for joint coherent population trapping and three-photon N resonances. Cindy Hancox, Michael Hohensee, Michael Crescimanno, David F. Phillips, and Ronald L. Walsworth. Optics Letters 33, 1536–1538 (2008). link PDF
    BibTeX
    arXiv
  • A laser frequency comb that enables radial velocity measurements with a precision of 1 cm/s. Chih-Hao Li, Andrew J. Benedick, Peter Fendel, Alexander G. Glenday, Franz X. Kärtner, David F. Phillips, Dimitar Sasselov, Andrew Szentgyorgyi, and Ronald L. Walsworth. Nature 452, 610–612 (2008). link PDF
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    arXiv
  • Optimizing slow and stored light for multidisciplinary applications. Mason Klein, Yanhong Xiao, Alexey V. Gorshkov, Michael Hohensee, Cleo D. Leung, Mark R. Browning, David F. Phillips, Irina Novikova, and Ronald L. Walsworth. Proceedings of SPIE 6904, 69040C (2008). link PDF
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  • Slow Light with Integrated Gain and Large Pulse Delay. Irina Novikova, David F. Phillips, and Ronald L. Walsworth. Physical Review Letters 99, 173604 (2007). link PDF
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    arXiv
  • Optimal Control of Light Pulse Storage and Retrieval. Irina Novikova, Alexey V. Gorshkov, David F. Phillips, Anders S. Sorensen, Mikhail D. Lukin, and Ronald L. Walsworth. Physical Review Letters 98, 243602 (2007). link PDF
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    arXiv
  • Optimization of slow and stored light in atomic vapor. Irina Novikova, Alexey V. Gorshkov, David F. Phillips, Yanhong Xiao, Mason Klein, and Ronald L. Walsworth. Proceedings of SPIE 6482, 64820M (2007). link PDF
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  • Slow light in paraffin-coated Rb vapour cells. M. Klein, I. Novikova, D. F. Phillips, and R. L. Walsworth. Journal of Modern Optics 53, 2583–2591 (2006). link PDF
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    arXiv
  • Comparison of 87Rb N-resonances for D1 and D2 transitions. Irina Novikova, David F. Phillips, Alexander S. Zibrov, Ronald L. Walsworth, Aleksei V. Taichenachev, and Valeriy I. Yudin. Optics Letters 31, 2353–2355 (2006). link PDF
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    arXiv
  • Cancellation of light shifts in an N-resonance clock. Irina Novikova, David F. Phillips, Alexander S. Zibrov, Ronald L. Walsworth, Aleksei V. Taichenachev, and Valeriy I. Yudin. Optics Letters 31, 622–624 (2006). link PDF
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    arXiv
  • Diffusion-Induced Ramsey Narrowing. Yanhong Xiao, Irina Novikova, David F. Phillips, and Ronald L. Walsworth. Physical Review Letters 96, 043601 (2006). link PDF
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    arXiv

  • EIT and diffusion of atomic coherence. I. Novikova, Y. Xiao, D. F. Phillips, and R. L. Walsworth. Journal of Modern Optics 52, 2381–2390 (2005). link PDF
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    arXiv
  • Three-photon-absorption resonance for all-optical atomic clocks. Sergei Zibrov, Irina Novikova, David F. Phillips, Aleksei V. Taichenachev, Valeriy I. Yudin, Ronald L. Walsworth, and Alexander S. Zibrov. Physical Review A 72, 011801 (2005). link PDF
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    arXiv
  • Optimizing stored light efficiency in vapor cells. Irina Novikova, Mason Klein, David F. Phillips, and Ronald L. Walsworth. Proceedings of SPIE 5735, 87–97 (2005). link PDF
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  • Modulation-induced frequency shifts in a coherent-population-trapping-based atomic clock. David F. Phillips, Irina Novikova, Christine Y.-T. Wang, Ronald L. Walsworth, and Michael Crescimanno. Journal of the Optical Society of America B 22, 305–310 (2005). link PDF
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    arXiv

  • Bound on Lorentz and CPT Violating Boost Effects for the Neutron. F. Cané, D. Bear, D. F. Phillips, M. S. Rosen, C. L. Smallwood, R. E. Stoner, R. L. Walsworth, and V. Alan Kosteleck'y. Physical Review Letters 93, 230801 (2004). link PDF
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    arXiv
  • Dynamic optical bistability in resonantly enhanced Raman generation. I. Novikova, A. S. Zibrov, D. F. Phillips, A. André, and R. L. Walsworth. Physical Review A 69, 061802 (2004). link PDF
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    arXiv

  • Testing Lorentz and CPT symmetry with hydrogen masers. M. A. Humphrey, D. F. Phillips, E. M. Mattison, R. F. C. Vessot, R. E. Stoner, and R. L. Walsworth. Physical Review A 68 (2003). link PDF
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    arXiv
  • Atomic memory for correlated photon states. C. H. van der Wal, M. D. Eisaman, A. André, R. L. Walsworth, D. F. Phillips, A. S. Zibrov, and M. D. Lukin. Science 301, 196–200 (2003). link PDF
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  • Toward nonclassical light storage via atomic-vapor Raman scattering. Caspar H. van der Wal, M. D. Eisaman, A. S. Zibrov, A. Andre, D. F. Phillips, R. L. Walsworth, and M. D. Lukin. Proceedings of SPIE 5115, 236–246 (2003). link PDF
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  • Phase coherence and control of stored photonic information. A. Mair, J. Hager, D. F. Phillips, R. L. Walsworth, and M. D. Lukin. Physical Review A 65, 031802 (2002). link PDF
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    arXiv

  • Limit on Lorentz and CPT violation of the proton using a hydrogen maser. D. F. Phillips, M. A. Humphrey, E. M. Mattison, R. E. Stoner, R. F. C. Vessot, and R. L. Walsworth. Physical Review D 63, 111101 (2001). link PDF
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    arXiv
  • Storage of Light in Atomic Vapor. D. F. Phillips, A. Fleischhauer, A. Mair, R. L. Walsworth, and M. D. Lukin. Physical Review Letters 86, 783–786 (2001). link PDF
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    arXiv

  • Double-resonance frequency shift in a hydrogen maser. M. A. Humphrey, D. F. Phillips, and R. L. Walsworth. Physical Review A 62, 063405 (2000). link PDF
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    arXiv

  • Characterization and stabilization of fiber-coupled laser diode arrays. D. F. Phillips, G. P. Wong, D. Bear, R. E. Stoner, and R. L. Walsworth. Review of Scientific Instruments 70, 2905–2909 (1999). link PDF
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