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Stabilizing the False Vacuum: Mott Skyrmions

January 16, 2015
Figure 2: Inner structure of the skyrmion in the (x, z) plane

Figure 2: Inner structure of the skyrmion in the (x, z) plane. (a) In-trap SF densities of the |+1〉 (|−1〉) bosons form a vortex (antivortex) around the equator, whereas that of the |0〉 condensate in (b) creates a dark soliton at the poles. [from M. Kanász-Nagy, B. Dóra, E.A. Demler & G. Zaránd, "Stabilizing the false vacuum: Mott skyrmions," Scientific Reports 5:7692 | doi:10.1038/srep07692.

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Atomic-Scale Nuclear Spin Imaging Using Quantum-Assisted Sensors in Diamond

January 16, 2015
Figure 3: Protocol for quantum-enhanced nuclear spin imaging

Figure 3: Protocol for quantum-enhanced nuclear spin imaging. First the NV measures a 1D NMR spectrum (sense). During this step, polarization is selectively transferred from the NV to a particular nuclear spin in the protein (polarize). Polarization is then allowed to spread (diffusion), driven by the nuclear spin-spin dipolar coupling. The polarization now localized on a different nuclear spin is transferred back to the NV spin and measured optically (reverse-sense). [from A. Ajoy, U. Bissbort, M.D. Lukin, R.L. Walsworth, and P.

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Modeling Thermal Dust Emission with Two Components: Application to the Planck High Frequency Instrument Maps

January 16, 2015
Figure 8

Figure 8. One degree FWHM full-sky map of f1 derived from our low-resolution fits described in Section 7.4. [from A.M. Meisner and D.P. Finkbeiner, "Modeling thermal dust emission with two components: application to the Planck high frequency instrument maps," 2015 ApJ 798:88 | doi:10.1088/0004-637X/798/2/88. © 2015 The American Astronomical Society.]

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Kim Bernard, Visiting Artist-in-Residence

January 16, 2015
Kim Bernard with 'Bardo State'

Kim Bernard, visiting Artist-in-Residence in the Physics Department, has set up a studio in SciBox 302 for the spring semester. She will be working with students in the Physics 15a lab to integrate kinetic art making into existing and new lab projects as natural extensions of the projects themselves. Bernard will be sitting in on physics labs and lectures and using the department's equipment to create new work. She is looking forward to collaborating with students, faculty and staff in a cross disciplinary exchange between art and science. Everyone is welcome to stop by her studio to see what she's creating!

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Sabrina Gonzalez Pasterski, Tony Pan, and Henry Lin

January 7, 2015

Henry is a sophomore Physics concentrator; Sabrina is a graduate student in the Harvard Center for the Fundamental Laws of Nature; Tony graduated from our department with a PhD in astrophysics in 2013. Henry, Sabrina and Tony are among this year's "FORBES 30 Under 30: Young Scientists Who Are Changing The World." (For more information, please see the Forbes article)

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All-Optical Initialization, Readout, and Coherent Preparation of Single Silicon-Vacancy Spins in Diamond

December 23, 2014

Figure 4: Optical access to spin levels of SiV− in diamond. (a) A SiV− center consists of a silicon atom between two vacant lattice sites and is aligned along a <111> crystal bond direction.[From: L.J. Rogers, K.D. Jahnke, M.H. Metsch, A. Sipahigil, et al., "All-Optical Initialization, Readout, and Coherent Preparation of Single Silicon-Vacancy Spins in Diamond," Phys. Rev. Lett. 113, 263602 (22 December 2014) | DOI: http://dx.doi.org/10.1103/PhysRevLett.113.263602]

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High Quality-Factor Optical Nanocavities in Bulk Single-Crystal Diamond

December 22, 2014

Reprinted by permission from Macmillan Publishers Ltd: Nature Communications ©2014

FIG. 1: Angled-etching fabrication methodology.: (a) Illustration of angled-etching used to realize free-standing structures in bulk single-crystal diamond. [From M. Burek, et al., "High quality-factor optical nanocavities in bulk single-crystal diamond," Nature Communications 5: 5718 | doi:10.1038/ncomms6718 ]

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