Bio


Schleier-­Smith received her B.A. in 2005 from Harvard University, having studied Chemistry and Physics and (secondarily) Mathematics. She subsequently pursued graduate studies in experimental atomic physics at MIT. After receiving her Ph.D. in 2011, she was a postdoctoral fellow at the Max Planck Institute of Quantum Optics and Ludwig Maximilian­ University (LMU Munich), before arriving at Stanford in the fall of 2013.

Academic Appointments


Honors & Awards


  • NSF CAREER Award, National Science Foundation (2018)
  • Cottrell Scholar Award, Research Corporation (2017)
  • Hellman Fellowship, Hellman Fellows Fund (2015)
  • AFOSR Young Investigator Award, Air Force Office of Scientific Research (2014)
  • Alfred P. Sloan Research Fellowship, Alfred P. Sloan Foundation (2014)

Professional Education


  • Ph.D., Massachusetts Institute of Technology, Physics (2011)
  • A.B., Harvard University, Chemistry & Physics, Mathematics (2005)

Current Research and Scholarly Interests


In between the few­-particle realm where we have mastered quantum mechanics and the macroscopic domain describable by classical physics, there lies a broad swath of territory where quantum effects are relevant but still largely out of our control and partly beyond our comprehension. This territory includes metrological instruments whose precision is limited by the quantum projection noise of millions of atoms; and materials whose bulk properties emerge from many-­body interactions intractable to simulation on classical computers. Professor Schleier­-Smith’s research aims to advance our control and understanding of many­-particle quantum systems by engineering new quantum states and Hamiltonians with ensembles of laser-cooled atoms.

All Publications


  • Painting Nonclassical States of Spin or Motion with Shaped Single Photons PHYSICAL REVIEW LETTERS Davis, E. J., Wang, Z., Safavi-Naeini, A. H., Schleier-Smith, M. H. 2018; 121 (12)
  • Floquet Symmetry-Protected Topological Phases in Cold-Atom Systems PHYSICAL REVIEW LETTERS Potirniche, I., Potter, A. C., Schleier-Smith, M., Vishwanath, A., Yao, N. Y. 2017; 119 (12): 123601

    Abstract

    We propose and analyze two distinct routes toward realizing interacting symmetry-protected topological (SPT) phases via periodic driving. First, we demonstrate that a driven transverse-field Ising model can be used to engineer complex interactions which enable the emulation of an equilibrium SPT phase. This phase remains stable only within a parametric time scale controlled by the driving frequency, beyond which its topological features break down. To overcome this issue, we consider an alternate route based upon realizing an intrinsically Floquet SPT phase that does not have any equilibrium analog. In both cases, we show that disorder, leading to many-body localization, prevents runaway heating and enables the observation of coherent quantum dynamics at high energy densities. Furthermore, we clarify the distinction between the equilibrium and Floquet SPT phases by identifying a unique micromotion-based entanglement spectrum signature of the latter. Finally, we propose a unifying implementation in a one-dimensional chain of Rydberg-dressed atoms and show that protected edge modes are observable on realistic experimental time scales.

    View details for DOI 10.1103/PhysRevLett.119.123601

    View details for Web of Science ID 000411328300009

    View details for PubMedID 29341658

  • Measuring the scrambling of quantum information PHYSICAL REVIEW A Swingle, B., Bentsen, G., Schleier-Smith, M., Hayden, P. 2016; 94 (4)
  • Bloch state tomography using Wilson lines SCIENCE Li, T., Duca, L., Reitter, M., Grusdt, F., Demler, E., Endres, M., Schleier-Smith, M., Bloch, I., Schneider, U. 2016; 352 (6289): 1094-1097

    Abstract

    Topology and geometry are essential to our understanding of modern physics, underlying many foundational concepts from high-energy theories, quantum information, and condensed-matter physics. In condensed-matter systems, a wide range of phenomena stem from the geometry of the band eigenstates, which is encoded in the matrix-valued Wilson line for general multiband systems. Using an ultracold gas of rubidium atoms loaded in a honeycomb optical lattice, we realize strong-force dynamics in Bloch bands that are described by Wilson lines and observe an evolution in the band populations that directly reveals the band geometry. Our technique enables a full determination of band eigenstates, Berry curvature, and topological invariants, including single- and multiband Chern and Z₂ numbers.

    View details for DOI 10.1126/science.aad5812

    View details for Web of Science ID 000376480800037

    View details for PubMedID 27230376

  • Approaching the Heisenberg Limit without Single-Particle Detection PHYSICAL REVIEW LETTERS Davis, E., Bentsen, G., Schleier-Smith, M. 2016; 116 (5)
  • An Aharonov-Bohm interferometer for determining Bloch band topology SCIENCE Duca, L., Li, T., REITTER, M., Bloch, I., Schleier-Smith, M., Schneider, U. 2015; 347 (6219): 288-292

    Abstract

    The geometric structure of a single-particle energy band in a solid is fundamental for a wide range of many-body phenomena and is uniquely characterized by the distribution of Berry curvature over the Brillouin zone. We realize an atomic interferometer to measure Berry flux in momentum space, in analogy to an Aharonov-Bohm interferometer that measures magnetic flux in real space. We demonstrate the interferometer for a graphene-type hexagonal optical lattice loaded with bosonic atoms. By detecting the singular π Berry flux localized at each Dirac point, we establish the high momentum resolution of this interferometric technique. Our work forms the basis for a general framework to fully characterize topological band structures.

    View details for DOI 10.1126/science.1259052

    View details for Web of Science ID 000347915300040

    View details for PubMedID 25525160

  • Orientation-Dependent Entanglement Lifetime in a Squeezed Atomic Clock PHYSICAL REVIEW LETTERS Leroux, I. D., Schleier-Smith, M. H., Vuletic, V. 2010; 104 (25)

    Abstract

    We study experimentally the application of a class of entangled states, squeezed spin states, to the improvement of atomic-clock precision. In the presence of anisotropic noise, the entanglement lifetime is strongly dependent on squeezing orientation. We measure the Allan deviation spectrum of a clock operated with a phase-squeezed input state. For averaging times up to 50 s the squeezed clock achieves a given precision 2.8(3) times faster than a clock operating at the standard quantum limit.

    View details for DOI 10.1103/PhysRevLett.104.250801

    View details for Web of Science ID 000279178900001

    View details for PubMedID 20867356

  • Implementation of Cavity Squeezing of a Collective Atomic Spin PHYSICAL REVIEW LETTERS Leroux, I. D., Schleier-Smith, M. H., Vuletic, V. 2010; 104 (7)

    Abstract

    We squeeze unconditionally the collective spin of a dilute ensemble of laser-cooled 87Rb atoms using their interaction with a driven optical resonator. The shape and size of the resulting spin uncertainty region are well described by a simple analytical model [M. H. Schleier-Smith, I. D. Leroux, and V. Vuletić, arXiv:0911.3936 [Phys. Rev. A (to be published)]] through 2 orders of magnitude in the effective interaction strength, without free parameters. We deterministically generate states with up to 5.6(6) dB of metrologically relevant spin squeezing on the canonical 87Rb hyperfine clock transition.

    View details for DOI 10.1103/PhysRevLett.104.073602

    View details for Web of Science ID 000274664500021

    View details for PubMedID 20366881

  • States of an Ensemble of Two-Level Atoms with Reduced Quantum Uncertainty PHYSICAL REVIEW LETTERS Schleier-Smith, M. H., Leroux, I. D., Vuletic, V. 2010; 104 (7)

    Abstract

    We generate entangled states of an ensemble of 5x10{4} 87Rb atoms by optical quantum nondemolition measurement. The resonator-enhanced measurement leaves the atomic ensemble, prepared in a superposition of hyperfine clock levels, in a squeezed spin state. By comparing the resulting reduction of quantum projection noise [up to 8.8(8) dB] with the concomitant reduction of coherence, we demonstrate a clock input state with spectroscopic sensitivity 3.0(8) dB beyond the standard quantum limit.

    View details for DOI 10.1103/PhysRevLett.104.073604

    View details for Web of Science ID 000274664500023

    View details for PubMedID 20366883

  • One- and two-axis squeezing of atomic ensembles in optical cavities NEW JOURNAL OF PHYSICS Borregaard, J., Davis, E. J., Bentsen, G. S., Schleier-Smith, M. H., Sorensen, A. S. 2017; 19
  • Advantages of Interaction-Based Readout for Quantum Sensing Davis, E., Bentsen, G., Li, T., Schleier-Smith, M., Hasan, Z. U., Hemmer, P. R., Lee, H., Migdall, A. L. SPIE-INT SOC OPTICAL ENGINEERING. 2017

    View details for DOI 10.1117/12.2257033

    View details for Web of Science ID 000417339300010

  • Editorial: Hybridizing Quantum Physics and Engineering. Physical review letters Schleier-Smith, M. 2016; 117 (10): 100001-?

    View details for DOI 10.1103/PhysRevLett.117.100001

    View details for PubMedID 27636456

  • Dynamic optical superlattices with topological bands PHYSICAL REVIEW A Baur, S. K., Schleier-Smith, M. H., Cooper, N. R. 2014; 89 (5)
  • Generating entangled spin states for quantum metrology by single-photon detection PHYSICAL REVIEW A McConnell, R., Zhang, H., Cuk, S., Hu, J., Schleier-Smith, M. H., Vuletic, V. 2013; 88 (6)
  • Unitary cavity spin squeezing by quantum erasure PHYSICAL REVIEW A Leroux, I. D., Schleier-Smith, M. H., Zhang, H., Vuletic, V. 2012; 85 (1)
  • Optomechanical Cavity Cooling of an Atomic Ensemble PHYSICAL REVIEW LETTERS Schleier-Smith, M. H., Leroux, I. D., Zhang, H., Van Camp, M. A., Vuletic, V. 2011; 107 (14)

    Abstract

    We demonstrate cavity sideband cooling of a single collective motional mode of an atomic ensemble down to a mean phonon occupation number ⟨n⟩(min⁡)=2.0(-0.3)(+0.9). Both ⟨n⟩(min) and the observed cooling rate are in good agreement with an optomechanical model. The cooling rate constant is proportional to the total photon scattering rate by the ensemble, demonstrating the cooperative character of the light-emission-induced cooling process. We deduce fundamental limits to cavity cooling either the collective mode or, sympathetically, the single-atom degrees of freedom.

    View details for DOI 10.1103/PhysRevLett.107.143005

    View details for Web of Science ID 000295328200003

    View details for PubMedID 22107191

  • Squeezing the collective spin of a dilute atomic ensemble by cavity feedback PHYSICAL REVIEW A Schleier-Smith, M. H., Leroux, I. D., Vuletic, V. 2010; 81 (2)
  • A linear AC trap for polar molecules in their ground state JOURNAL OF PHYSICAL CHEMISTRY A Schnell, M., Lutzow, P., van Veldhoven, J., Bethlem, H. L., Kupper, J., Friedrich, B., Schleier-Smith, M., Haak, H., Meijer, G. 2007; 111 (31): 7411-7419

    Abstract

    A linear AC trap for polar molecules in high-field seeking states has been devised and implemented, and its characteristics have been investigated both experimentally and theoretically. The trap is loaded with slow 15ND3 molecules in their ground state (para-ammonia) from a Stark decelerator. The trap's geometry offers optimal access as well as improved loading. We present measurements of the dependence of the trap's performance on the switching frequency, which exhibit a characteristic structure due to nonlinear resonance effects. The molecules are found to oscillate in the trap under the influence of the trapping forces, which were analyzed using 3D numerical simulations. On the basis of expansion measurements, molecules with a velocity and a position spread of 2.1 m/s and 0.4 mm, respectively, are still accepted by the trap. This corresponds to a temperature of 2.0 mK. From numerical simulations, we find the phase-space volume that can be confined by the trap (the acceptance) to be 50 mm3 (m/s)3.

    View details for DOI 10.1021/jp070902n

    View details for Web of Science ID 000248478700021

    View details for PubMedID 17566990

  • Nanotube-substrate interactions: Distinguishing carbon nanotubes by the helical angle PHYSICAL REVIEW LETTERS Kolmogorov, A. N., Crespi, V. H., Schleier-Smith, M. H., Ellenbogen, J. C. 2004; 92 (8)

    Abstract

    We investigate the interaction of a carbon nanotube with a graphite substrate, using an interlayer potential that explicitly treats the registry dependence of the interaction. The carbon-carbon bond lengths in nanotubes differ slightly from those in flat graphite, so that the naively commensurate angular orientations for the tube with respect to the substrate lattice are destroyed. The interaction of a one-dimensional tube with a two-dimensional substrate then leads to an unusual registry phenomenon not visible in standard layer-on-layer growth: the system develops favorable orientations which clearly are incommensurate.

    View details for DOI 10.1103/PhysRevLett.92.085503

    View details for Web of Science ID 000189266100028

    View details for PubMedID 14995788