Advances in Graphene, Majorana Fermions, Quantum Computation - Sankar Das Sarma (2012)

source: International Centre for Theoretical Sciences    2013年3月28日
Speaker : Sankar Das Sarma (University of Maryland, USA)
Date and Time : 19 Dec 2012, 04:30 PM
Venue : Auditorium, New Physical Sciences Building, IISc

These lectures will cover three modern topics in physics: graphene, quantum computation, and Majorana fermions. Graphene is a two-dimensional Dirac material existing in nature where the energy dispersion follows the chiral massless Dirac-Weyl equation. It has very intriguing properties which will be discussed at length. Quantum computation is a new theoretical paradigm for computation where the full power of quantum resources, namely superposition and entanglement, is utilized to solve problems which are beyond the realm of classical computation. Since quantum decoherence is the real enemy of quantum computation with quantum states disappearing rather fast in nature (i.e. before any successful computation could be carried out), a revolutionary new way of carrying out quantum computation uses topological quantum matter where emergent Majorana fermions with non-Abelian anyonic statistics can be braided to create the elementary computation steps. Topology provides the immunity for these Majorana fermions which do not decohere. The lectures will cover quantum computation and will discuss the recent possible discovery of Majorana fermions in semiconductor-superconductor hybrid systems.

The Quantum Phases of Matter (1-3) - Subir Sachdev (2013)

source: International Centre for Theoretical Sciences 2013年3月28日
Speaker : Subir Sachdev (Harvard University)
Date and Time : 06 Dec 2010, 04:00 PM
Venue : Faculty Hall, IISc, Bangalore
Quantum mechanics was developed in the early twentieth century to describe the motion of a single electron in a hydrogen atom. Later, Einstein and others pointed out that the quantum theory of a pair of electrons had non-intuitive features which they found unpalatable: two well-separatedelectrons can have their quantum states "entangled", indicating that they talk to each other quantum mechanically, even though they are far apart. Today, quantum entanglement is not viewed as a subtle microscopic effect of interest only to a few physicists, but as a crucial ingredient necessary for a complete understanding of the many phases of matter. A crystal can have roughly trillion trillion electrons entangled with each other, and the different patterns of entanglement lead to phases which are magnets, metals, or superconductors. I will give a simple discussion of these and other remarkable features of the quantum mechanics of a trillion trillion electrons, and of their importance to a variety of technologically important materials. The theory also has surprising and unexpected connections to string theory: remarkably, this connects the motion of electrons within a plane of a crystal in the laboratory, to the theory of astrophysical black holes similar to those studied by Chandrasekhar.
ICTS Chandrasekhar Lectures

Charge Exchange X-ray in Current and Future Astrophysical Research (April 13-15, 2015)

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source: ITAMP Physics    2015年6月22日
Workshop: Charge Exchange X-ray in Current and Future Astrophysical Research (April 13-15, 2015)

Hajime Tanuma “Charge Exchange Cross Sections and Emission Cross Sections of Solar Wind Charge Exchange in Laboratory" (Department of Physics, Tokyo Metropolitan University) 36:41
Teck G. Lee 47:37
Dennis bodewits , “Charge Exchange in Cometary Atmosphere” 31:53
Guo-Xin Chen “X-ray Lines and Resonances” 35:25
Konrad Dennerl “Observational Charge Exchange Challenges" 40:43
Graziella Branduardi-Raymont, “Planetary Charge Exchange X-ray emissions” 46:52
Peter Beiersdorfer 48:54
Jerome Loreau, “Spin-dependent charge exchange collisions” 37:28
lkhom Abdurakhmanov 19:35
Tom Gorczyca 42:01
Steve Murray 38:40
Vasili Kharchenko 5:07

Getting to Zero: What will it take? Annual National CFAR Scientific Meeting

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source: Harvard University    2016年12月15日
Annual National CFAR Scientific Meeting

Opening Plenary 43:00
Panel 1 1:35:45
Panel 2 1:20:02
Panel 3 1:19:47
Panel 4 1:16:41
Closing Remarks 39:27

The Science Behind Quantum Is Calling by Sean Carroll

source: caltech    2016年12月13日
Theoretical physicist Sean Carroll explains the quantum science at work in "Quantum is Calling," starring Zoe Saldana.
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Watch Quantum is Calling: https://youtu.be/UR-eHmNpicM
Go behind the scenes of the shoot: https://youtu.be/tn31SrTaOEo
And watch the original: Stephen Hawking vs. Paul Rudd in Quantum Chess (feat. Keanu Reeves)
https://youtu.be/Hi0BzqV_b44

Becoming Darwin: History, Memory, and Biography, "Economist of Nature"

source: Yale University    2015年11月6日
2015 Yale University Dwight H. Terry Lectures delivered by Janet Browne, Aramont Professor of the History of Science, Harvard University. Becoming Darwin: History, Memory, and Biography: November 3, 2015 - Economist of Nature

Janet Browne is Aramont professor of the History of Science at Harvard University where she teaches the history of biology, including the history of evolutionary theory. Her interests range widely over the life sciences, botany, the history of gardens, collecting, expeditions, museums, and natural history.

What Makes the Universe Fascinating? (Closer to Truth)

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source: Closer To Truth    2016年4月4日
Steven Weinberg - What Makes the Universe Fascinating? 9:29
Juan Maldacena - What Makes the Universe Fascinating? 8:37

Seth Lloyd - What Makes the Universe Fascinating? 2:55

Physics of Information (Closer to Truth)

source: Closer To Truth    2016年6月6日

Raphael Bousso - Physics of Information 6:22
Alexander Vilenkin - Physics of Information 5:55
Seth Lloyd - Physics of Information 5:09

Seth Lloyd - What Happens in Black Holes?

source: Closer To Truth      2016年4月4日
Black holes are the most incredible form of mass-energy in the universe, where gravity is so strong that nothing, not even light, can escape its relentless drawing power.
Click here to watch more interviews with Seth Lloyd http://bit.ly/225WmBZ
Click here to watch more interviews on what happens in black holes http://bit.ly/1RUmc9w
Click here to buy episodes or complete seasons of Closer To Truth http://bit.ly/1LUPlQS
For all of our video interviews please visit us at www.closertotruth.com

Natalie Batalha: "A Planet for Goldilocks" | Talks at Google

source: Talks at Google     2016年4月14日
"Not too hot, not too cold" reads the prescription for a world that's just right for life as we know it. Finding evidence of life beyond Earth is one of the primary goals of science agencies in the United States and abroad. The goal looms closer as a result of discoveries made by NASA's Kepler Mission. Launched in March 2009, Kepler is exploring the diversity of planets and planetary systems orbiting other stars in the galaxy. Finding inhabited environments is a path of exploration that stretches decades into the future. It begins by determining if Goldilocks planets abound. In this talk, Dr. Batalha will describe the latest discoveries of NASA's Kepler Mission and the possibilities for finding inhabited environments in the not-so-distant future.

Dr. Natalie Batalha is an astrophysicist at NASA Ames Research Center and the Mission Scientist for NASA's Kepler Mission. She holds a Bachelor's degree in physics from the University of California Berkeley, and a Doctoral degree in astrophysics from UC Santa Cruz. Dr. Batalha has been involved with the Kepler Mission since the proposal stage and has contributed to many different aspects of the science, from studying the stars themselves to detecting and understanding the planets they harbor. She led the analysis that yielded the discovery in 2011 of Kepler-10b — the mission's first confirmation of a rocky planet outside our solar system. Today, she leads the effort to understand planet populations in the galaxy based on Kepler discoveries.

Brian Swimme: "Journey of the Universe" | Talks at Google

source: Talks at Google     2016年5月5日
The discoveries of modern science tell a comprehensive epic story of the universe through fourteen billion years of evolution. Brian will tell this amazing story from the birth of the universe to the history of planet Earth to the stages of hominin evolution. While this account will certainly be in contention with older cultural narratives, it could ultimately lead to positive effects for future human evolution. Brian will point to some of the epic’s long term consequences for humanity as a whole.

Brian Swimme earned his doctorate in the department of mathematics at the University of Oregon where he specialized in singularities in gravitational systems. He is professor of evolutionary philosophy at the California Institute of Integral Studies in San Francisco. His PBS film Journey of the Universe won an Emmy for best documentary in Northern California.

Is Time Travel Possible? (Closer to Truth)

source: Closer To Truth   2016年4月4日

Seth Lloyd - Is Time Travel Possible? 10:23

Kip Thorne - Is Time Travel Possible? 3:39

Cara Battersby: The Wild West of Star Formation | CfA

source: Harvard University   2016年4月22日
We saddle up to explore the extreme center of our Milky Way galaxy - one of the wildest sections of the outer-space frontier. Our Galactic center is a chaotic region containing dense gas, stars, and the biggest bully around these parts: a supermassive black hole. The normal rules for star formation don't apply here, and understanding why will help us to understand star formation throughout the rest of our wild universe. Speaker: Cara Battersby. Animations credit: ESO. Used under Creative Commons Attribution 4.0 International License.

Where Do Planets Come From with Anjali Tripathi | CfA

source: Harvard University   2016年3月25日
Understanding the birthplaces of planets is an ongoing mystery. Planets have been predicted to form from disks of gas and dust around young stars. New observations of these protoplanetary disks offer exciting evidence for planet formation in action. Speaker: Anjali Tripathi

探索13-2講座：以電波之筆描繪無限未來 / 陳士元教授

source: 臺大科學教育發展中心     2015年4月14日
從一百多年前馬可尼發出那通越洋無線電報開始，無線通訊便正式進入我們的生活；時至今­日，手機主導了多數人的生活型態。手機及各種穿戴式裝置之所以能相互通訊，均是透過電­磁波傳遞訊號；而電磁波看不見、摸不著，許多人因為不瞭解而聞「波」色變；其實，電磁­波跟聲波、水波一樣，是一種傳遞能量的方式，並不可怕。

在本講中，陳教授將依循電磁學的發展脈絡介紹電磁波的基本現象，並談談發射與接收電磁­波的利器¾天線及其工作原理，最後，根據電磁波與天線的特性，討論無線通訊系統的可能­架構與未來發展。

講座時間：2015.4.11 下午2點
地點：台灣大學 應用力學研究所 1F 國際會議廳

From gases to gloops: instabilities in fluids (Helen Wilson - 23 Feb 2016)

source: UCL Lunch Hour Lectures     2016年3月2日
Speaker: Dr Helen Wilson
UCL Mathematics
Fluid flows make up so much of our world, from the atmosphere and oceans to volcanic lava. They are also key to many biological processes, and almost everything we use goes through a fluid stage in its manufacture. Dr Helen Wilson shows how these fluid flows can become unstable and explains some of the mechanisms at work.

About quantum theory / 量子力學理論 (explained by Michio Kaku)

source: llllll0o   2009年2月14日