Department of Applied Physics and Materials Science - Applied Physics

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Highlights

Using Laser Light to Cool Object to Quantum Ground State

10-07-11

Oskar J. Painter, Professor of Applied Physics and Executive Officer for Applied Physics and Materials Science, and colleagues including graduate student Jasper Chan have cooled a miniature mechanical object—a tiny mechanical silicon beam— to its lowest possible energy state using laser light. The achievement paves the way for the development of exquisitely sensitive detectors. "In many ways, the experiment we've done provides a starting point for the really interesting quantum-mechanical experiments one wants to do," Painter says. [Caltech Press Release]

Tags: APhMS energy research highlights Oskar Painter Jasper Chan

Winners of the 2010 Demetriades - Tsafka - Kokkalis Prizes Announced

06-08-10

The student winners of the 2010 Demetriades - Tsafka - Kokkalis Prizes were announced at a special luncheon with the Demetriades - Tsafka – Kokkalis family. Xiquan Cui received the prize in Biotechnology for his work on biophotonics with Professor Changhuei Yang; Matt Eichenfield received the prize in Nanotechnology for his work in nanomechanics with Professor Oskar Painter; Morgan Putnam received the prize in Entrepreneurship for work on silicon solar cells with Professor Harry Atwater; and Andrew May received the prize in Environmentally Benign Renewable Energy Sources for his work on thermoelectric materials with Professor Sossina Haile and Dr. Jeff Snyder.

Tags: APhMS EE honors Changhuei Yang Harry Atwater Xiquan Cui Matt Eichenfield Oskar Painter Morgan Putnam Andrew May Sossina Haile Jeff Snyder Demetriades - Tsafka - Kokkalis Prizes

Oskar Painter and Colleagues Propose Quantum Entanglement for Motion of Microscopic Objects

12-21-09

Oskar Painter, Associate Professor of Applied Physics, along with colleagues Darrick Change, Postdoctoral Scholar at Institute for Quantum Information, and H. Jeff Kimble, William L. Valentine Professor and Professor of Physics have proposed a new paradigm that should allow scientists to observe quantum behavior in small mechanical systems. Their idea offers a new means of studying the nature of quantum superposition and entanglement in progressively larger and more complex systems. [Caltech Press Release]

Tags: APhMS research highlights Oskar Painter

Oskar Painter and Kerry Vahala Trap Light and Sound Vibrations Together in Nanocrystal

10-26-09

Oskar Painter, Associate Professor of Applied Physics, and Kerry J. Vahala Ted and Ginger Jenkins Professor of Information Science and Technology and Professor of Applied Physics; Director, The Lee Center for Advanced Networking have created a nanoscale crystal device that, for the first time, allows scientists to confine both light and sound vibrations in the same tiny space. "This novel approach... exemplifies the forward-thinking work being done by the Engineering and Applied Science division," says Ares Rosakis, Chair and Theodore von Kármán Professor of Aeronautics and Mechanical Engineering at Caltech. [Caltech Press Release]

Tags: APhMS research highlights CMS Oskar Painter Kerry Vahala

Oskar Painter Developes a Nanoscale Device

07-02-09

Oskar Painter, Associate Professor of Applied Physics, has developed a nanoscale device that can be used for force detection, optical communication, and more. The nanoscale device is called a zipper cavity because of the way its dual cantilevers-or nanobeams, as Painter calls them-move together and apart when the device is in use. "If you look at it, it actually looks like a zipper," Painter notes. The device exploits the mechanical properties of light to create an optomechanical cavity in which interactions between light and motion are greatly strengthened and enhanced. These interactions are the largest demonstrated to date. [Caltech Press Release]

Tags: APhMS research highlights Oskar Painter