Events Archive

Special Seminar, Anthony Sigillito, Princeton University, "Electric field control of electronic and nuclear spin qubits in silicon"
Fri, Dec 16, 2016, 12:00 pm – 1:00 pm
Donor electronic and nuclear spins in silicon form two-level systems with coherence times exceeding seconds, making them promising qubits for quantum computing applications. These spins are typically manipulated using microwave magnetic fields. However, magnetic fields are difficult to confine at the nanoscale, which poses problems when moving…
Gravity Group Seminar, Steven Benton & Shuay-Pwu (Patty) Ho (Princeton University)
Fri, Dec 16, 2016, 12:00 pm – 1:30 pm

Steve Benton "Report on SuperBIT's 2016 Test Flight" ABSTRACT | SuperBIT is a wide-field sub-arcsecond imaging telescope for visible and near UV/IR wavelengths. It is designed to operate in the space-like environment of the Super-Pressure Balloon platform at an altitude of 35 km. During a 100 day flight it will infer masses of hundreds of…

Hamilton Colloquium Series: Christopher Monroe, JQI and University of Maryland; “Building a Quantum Computer, Atom by Atom”
Thu, Dec 15, 2016, 4:00 pm – 5:00 pm

Laser-cooled and trapped atomic ions are standards for quantum information science, acting as qubits with unsurpassed levels of quantum coherence while also allowing near-perfect measurement. When qubit state-dependent optical forces are applied to a collection of ions, their Coulomb interaction is modulated in a way that allows entanglement…

Department of Physics Holiday Party
Wed, Dec 14, 2016, 3:00 pm – 6:00 pm
Our holiday party begins at 3:00 pm A visit from Santa Claus at 4:00 pm Please stay for the raffle at 5:00 pm Room 102 Jadwin Hall Department of Physics

Special Seminar | Monika Scholz, UChicago | "To eat or not to eat: Feeding in noisy conditions"
Wed, Dec 14, 2016, 1:00 pm – 2:00 pm
Animals generally forage on inhomogeneous landscapes, where nutritional content varies in space and time. Therefore they need to assess the benefit of immediate intake versus waiting for better times. The process of feeding itself incurs an energetic cost in most animals, which poses a cost-benefit question: is the environment nutrient rich…
Special Seminar, Johanna Nagy "Probing Inflation with SPIDER, a Balloon-Borne CMB Polarimeter"
Wed, Dec 14, 2016, 11:00 am – 12:00 pm
TITLE Probing Inflation with SPIDER, a Balloon-Borne CMB Polarimeter ABSTRACT The generation of a stochastic gravitational wave background is a key prediction of cosmological theories of inflation. At large angular scales, these gravitational waves would imprint a "B-mode" polarization pattern in the Cosmic Microwave Background, providing a…
Pheno & Vino Seminar, Eder Izaguirre, Perimeter, "TBA"
Tue, Dec 13, 2016, 4:00 pm – Tue, Dec 6, 2016, 5:30 pm
Abstract: TBA

Pheno & Vino Seminar, Eder Izaguirre, Perimeter, "Visible signatures of Dark Matter at the LHC"
Tue, Dec 13, 2016, 4:00 pm – 5:30 pm
I discuss well-motivated examples where Dark Matter production at the LHC can leave its imprint through striking visible signatures in addition to missing energy.

Special Seminar: Dillon Wong, UC-Berkeley: "Imaging Relativistic Fermions in Simple 2D Potentials in Graphene”
Tue, Dec 13, 2016, 12:00 pm – 1:00 pm
Most physicists are familiar with how nonrelativistic quantum mechanics governs the behavior of particles in a Coulomb potential or a simple harmonic oscillator potential. But what happens when the particles become highly relativistic? Such questions used to lie mainly in the domain of high and intermediate energy physics. With the discovery that…
HET Seminar | Anton Kapustin, California Institute of Technology | "Bosonization in Two and Three Dimensions and Spin Structures”
Mon, Dec 12, 2016, 2:30 pm – Wed, Dec 7, 2016, 3:30 pm
I will explain in examples how to incroporate the dependence on spin structure in fermionic lattice models. In two dimensions, I show to construct a spin-TQFT out of a superalgebra. In three dimensions, it turns out that fermionic lattice models are related to bosonic models with a global 1-form symmetry. This bosonization statement can be used…
Condensed Matter Seminar, Andrew Jordan, U of Rochester, "Continuously watched quantum systems - a stochastic path integral approach"
Mon, Dec 12, 2016, 1:15 pm – 2:15 pm
Recent theoretical and experimental progress in continuously monitored quantum systems has permitted the real-time tracking of the quantum state during the measurement process. I will discuss (1) how to predict the most likely path between two boundary conditions in time, (2) the probability distribution of entanglement created by the…
Special HEP Seminar-Jack Bradmiller-Feld-UCSB
Fri, Dec 9, 2016, 3:00 pm – 4:30 pm
TITLE: An Inclusive and Generic Search for Supersymmetry in the Multijet + Missing Momentum Final State Performed on pp Collision Data Collected with the CMS Detector ABSTRACT: For the past two years, the LHC has collided protons at a record-high center-of-mass energy of 13 TeV. This time has provided an opportunity to search for beyond standard…
HET Seminar | Raffaele D'Agnolo, Member, School of Natural Sciences, IAS | "WIMPs, Miracles and Coincidences"
Fri, Dec 9, 2016, 1:45 pm – 2:45 pm
I will briefly review our current experimental knowledge of dark matter and then discuss recent developments in model building. In particular I will show that dark matter can be a thermal relic exponentially lighter than the weak scale without being exponentially weakly coupled. I will discuss concrete examples of light thermal dark matter with…
Gravity Group Seminar, Mathew Madhavacheril (Princeton University)
Fri, Dec 9, 2016, 12:00 pm – 1:30 pm

TITLE Cosmology with the Longest Lever Arm using CMB Lensing ABSTRACT The cosmic microwave background (CMB) provides a snapshot of the universe at a redshift of around 1100. At the same time, it acts as a backlight that is gravitationally lensed by structure that formed at low redshifts. CMB fluctuations are therefore especially sensitive to…

Hamilton Colloquium Series: A. J. Stewart Smith, Princeton; “The Path to CP Violation: Remembering Val Fitch and Jim Cronin in Princeton”
Thu, Dec 8, 2016, 4:00 pm – 5:00 pm

Within the past year and a half we have lost Val Fitch and Jim Cronin, two of Princeton’s greatest physicists. Their 1964 discovery of CP Violation in the decays of the long-lived neutral K meson, referred to at the time as “the Princeton Effect,” was a complete surprise, right out of the blue, that defied any and all explanation. The mystery…

HEP Seminar-Jack Bradmiller-Feld-UCSB
Thu, Dec 8, 2016, 3:00 pm – Thu, Dec 1, 2016, 4:30 pm
TITLE: "An Inclusive and Generic Search for Supersymmetry in the Multijet + Missing Momentum Final State Performed on pp Collision Data Collected with the CMS Detector" ABSTRACT: For the past two years, the LHC has collided protons at a record-high center-of-mass energy of 13 TeV. This time has provided an opportunity to search for beyond…
Special HET Seminar | Mario Martone, Cornell University | “Understanding the Landscape of N=2 Super-conformal Field Theories”
Thu, Dec 8, 2016, 1:45 pm – 2:45 pm
In this talk I will argue that a systematic classification of 4d N=2 superconformal field theories is possible through a careful analysis of the geometry of their Coulomb branches. I will carefully describe this general framework and then carry out the classification explicitly in the rank-1, that is one complex dimensional Coulomb branch, case…
Special Seminar: Pietro Giampa/Queen's Univ. "Searching for Dark Matter with the DEAP-3600 Experiment"
Thu, Dec 8, 2016, 1:30 pm – 2:30 pm
Abstract: DEAP-3600 is a single phase liquid argon (LAr) dark matter experiment, located 2 km underground at SNOLAB, in Sudbury, Ontario. The detector has 1 tonne fiducial mass of LAr. The target sensitivity to spin-independent scattering of 100 GeV WIMPs is 10^{−46} cm^{2}. The DEAP-3600 background target is
Special Seminar, Jacob Covey, Colorado, "A quantum gas of polar KRb molecules in an optical lattice"
Wed, Dec 7, 2016, 1:30 pm – 2:30 pm
Ultracold polar molecules allow for investigation of quantum-state-controlled chemistry as well as strongly correlated many-body dynamics. After the first realization of polar molecules in the quantum regime, chemical reactions immediately became apparent in our KRb system. Upon obtaining a detailed understanding of the chemical reaction…

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