Events Archive

Special Seminar

Quantum Sciences Seminar - C. Kloeffel, University of Basel, Switzerland - Strong spin-orbit interaction and helical hole states in Ge/Si nanowires

Wed, May 23, 2012, 1:00 pm to 2:00 pm

I will present our recent work [1], where we study theoretically the low-energy hole states of Ge/Si core/shell nanowires. The low-energy valence band is quasidegenerate, formed by two doublets of different orbital angular momenta, and can be controlled via the relative shell thickness and via external fields.

Quantum Sciences Seminar Series - Jacob M. Taylor (JQI/NIST) - Photons and phonons for quantum simulation and metrology

Mon, May 14, 2012, 1:00 pm to 2:30 pm

Advances in high quality optical, electrical, and mechanical systems have led to the observation of quantum coupling between photons and phonons in both the radio frequency and optical domain.

PPPL COLLOQUIUM: A Slightly Longer History of E=mc2, Or How I Came to Hate 4/3

Wed, May 2, 2012, 4:00 pm to 6:00 pm
According to popular mythology, the equivalence of mass and energy was suddenly conceived of and proven by Einstein in 1905. In fact, serious attempts to connect mass and energy went back at least to J.J. Thomson in 1881 and over the next two decades became the subject of numerous investigations by Maxwellians such as Heaviside, Abraham and...

Gravity Group Special Seminar, "Early Science from the Jansky Very Large Array"

Mon, Apr 30, 2012, 12:45 pm to 1:45 pm

Speaker: Dale Frail, Assistant Director NRAO

Quantum Sciences Seminar - Greg Fuchs, Cornell University - Quantum control and coherence of single electronic and nuclear spins in diamond

Fri, Apr 6, 2012, 3:00 pm to 4:00 pm

The spin of individual nitrogen vacancy (NV) centers in diamond is a promising solid-state platform for quantum information processing and precision metrology at room temperature. Understanding and using the built-in resources of these point defects is critical to achieving these goals. I’ll describe two experiments with that aim.

Quantum Sciences Seminar - Xuedong Hu, University of Buffalo - Optimizing Electron-spin-cavity coupling via a double quantum dot

Thu, Mar 29, 2012, 2:00 pm to 3:30 pm

We investigate how to couple an electron spin in a semiconductor double quantum dot to a microwave cavity via the electrically driven spin resonance technique. Spin degree of freedom is accessed here through either the spin-orbit interaction or an inhomogeneous magnetic field.

The Computational Challenges of Connectomics

Fri, Mar 16, 2012, 12:00 pm to 1:00 pm
According to a doctrine known as connectionism, brain function and dysfunction depend primarily on patterns of connectivity between neurons. Connectionism has been explored theoretically with mathematical models of neural networks since the 1940s. It has proved difficult to test these models through activity measurements alone.

Osamu Tajima, "Road to primordial B-modes -- KEK's strategy for CMB polarization"

Mon, Feb 27, 2012, 4:00 pm to 5:00 pm
ABSTRACT: Precise measurements of cosmic microwave background (CMB) polarization, especially its odd-parity patterns (B-modes) at large angular scale, prove a scenario of inflationary universe. Many experiments are aiming to detect them.

Condensed Matter/High Energy Theory Seminar - Zhengcheng Gu, KITP - Duality between symmetry protected topological order & intrinsic topological order

Tue, Feb 21, 2012, 1:30 pm to 3:00 pm
Symmetry protected topological(SPT) phase is a generalization of topological insulator(TI). Different from the intrinsic topological phase, e.g., the fractional quantum hall(FQH) phase, SPT phase is only distinguishable from a trivial disordered phase when certain symmetry is preserved.

Special Seminar "The POLARBEAR Experiment"

Wed, Jan 4, 2012, 11:00 am to 12:00 pm
Zigmund Kermish, UC Berkeley Abstract:We present the design and characterization of the POLARBEAR experiment.

The Cosmic Ray Climate Connection - From Geological time scales to the 20th Century - Prof. Nir Shaviv - Racah Institute of Physics

Mon, Aug 8, 2011, 11:00 am to 1:00 pm
Abstract: Cosmic Rays affect the climate though changes in the atmospheric ionization. This emerging theory is supported by evidence which has been accumulating over the past decade or so.

Experimental gravity with LIGO - Sam Waldman - Special Seminar

Tue, Mar 1, 2011, 1:30 pm to 3:30 pm
The direct detection of gravitational waves (GWs) offers a revolutionary new probe of the most energetic processes in the universe and a test of general relativity in new regimes. The 4 km long LIGO interferometers have demonstrated the sub-attometer displacement sensitivity (< 10^{-18} m/ Hz^{1/2}) and continuous operation (> 75\%

Coherent Manipulations with Ultrafast Pulses and Trapped Ions: Special Seminar given by Wes Campbell

Tue, Feb 8, 2011, 1:30 pm to 3:00 pm
The field of quantum information science promises computational methods that are more efficient than classical algorithms for certain calculations. In particular, the use of a well-controlled quantum

Quantum Information with Atoms and Light- Given by Steven Olmschenk

Fri, Feb 4, 2011, 1:30 pm to 3:00 pm
Abstract: Rapid progress in coherent control of single trapped atomic ions and ensembles of ultracold atoms in optical lattices has enabled more precise atomic physics measurements, a probe of fundamental quantum

Special Seminar - Itay Yavin - "Very Weak Interactions"

Tue, Feb 1, 2011, 3:00 pm to 4:00 pm
Abstract: What lies beyond the Standard Model of particle physics? Are there very weakly interacting forms of matter and forces waiting to be discovered? In this talk I will describe some of the efforts underway to detect very weakly interacting particles, from dark matter to new forces.

Dr. Benjamin Lev - Exploring Strongly Correlated Matter with Exotic Atoms, Atom Chips, and Cavity QED

Tue, Feb 1, 2011, 1:30 pm to 3:00 pm
Advances in the quantum manipulation of ultracold atomic gases are opening a new frontier in the quest to better understand strongly correlated matter.

David Weld - Thermometry and Cooling with Ultracold Spin Mixtures in Optical Lattices

Wed, Jan 19, 2011, 1:30 pm to 3:30 pm
Abstract: Ultracold atoms in optical lattices are expected to exhibit correlated magnetic quantum phases, but only below a Curie or Néel temperature which is typically less than 1 nanoKelvin. Realization and measurement of this low temperature is the most challenging obstacle on the path towards observation of quantum magnetism in lattice-trapped...

Sepcial Seminar - David Weld

Wed, Jan 19, 2011, 1:30 pm to Fri, Jan 14, 2011, 3:30 pm

Jeremy England - Analytical Approaches to the Protein Folding Problem

The Scientist in Society, Jeremiah Ostriker

Fri, Jan 7, 2011, 3:30 pm to 5:00 pm
Responsbile Conduct of Research Training

Audience: First & Second Year Graduate Students