AVS2008 Session IPF-TuA: Frontiers in Physics
Tuesday, October 21, 2008 2:20 PM in Room 312
Tuesday Afternoon
Time Period TuA Sessions | Abstract Timeline | Topic IPF Sessions | Time Periods | Topics | AVS2008 Schedule
| Start | Invited? | Item |
|---|---|---|
| 2:20 PM |
IPF-TuA-3 Proton Cancer Therapy
J. Flanz (Massachusetts General Hospital) |
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| 4:00 PM |
IPF-TuA-8 Optical Atomic Clocks
J. Ye (National Institute of Science and Technology and University of Colorado) Quantum state engineering of ultracold matter and precise control of optical fields have allowed accurate measurement of light-matter interactions for the development of best atomic clocks. State-of-the-art lasers now maintain optical phase coherence over one second. Optical frequency combs distribute this optical phase coherence across the entire visible and infrared parts of the electromagnetic spectrum, leading to direct visualization and measurement of light ripples. An the same time, ultracold atoms confined in an optical lattice of zero differential a.c. Stark shift between two clock states allow us to minimize quantum decoherence while strengthen the clock signal. For 87Sr, we achieve a resonance quality factor >2 x 1014 on the 1S0 – 3P0 doubly forbidden clock transition at 698 nm.1 The uncertainty of this new clock has reached 1 x 10-16 and its instability approaches 1 x 10-15 at 1 s.2 These developments represent a remarkable convergence of ultracold atoms, laser stabilization, and ultrafast science. Further improvements are still tantalizing, with quantum measurement and precision metrology combining forces to explore the next frontier.
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| 4:40 PM |
IPF-TuA-10 Diamond Circuitry
M. Lukin (Harvard University) |