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Professor Andre Luiten 2001 Commendation for Honours supervision, University for Western AustraliaA defining feature of our technological society is a hunger for more accurate measurement and sensing.
An ever increasing capability in this field is demanded by the need to push more information through existing communication channels, make louis vuitton shoes online smaller features on chips to deliver more computing power in less space, and deliver revolutionary new technologies such as the louis vuitton atlanta ga hours Global Positioning System (GPS) or Magnetic Resonance Imaging (MRI). This quest for ever better measurement is also found at the heart of physics where it is perhaps the central strand of the field: many of the greatest discoveries in physics arose from measurements of important quantities to high accuracy. The Precision Measurements Group (PMG) aims to build instruments that louis vuitton shoes yorkdale can make measurements with world class precision and accuracy. We are interested in measurements that are of high value and interest to fundamental physics as well as in industrial, biological and defence contexts. Time (or equivalently frequency) is the most precisely measurable quantity of all. For example, modern atomic clocks can deliver long term precision of just parts in 10(^18) corresponding to a time error of less than a second over the lifetime of the Universe. This performance is the culmination of a 10 million fold improvement over the last 70 years. Using various sensors it is possible to translate many other physical parameters into a frequency and hence louis vuitton mens shoes size 9 use the power and precision of frequency measurement protocols in many other fields. Although this approach may seem rather esoteric it turns out that many modern key devices in modern society are based on high quality clocks, lasers and oscillators: the Global Positioning System (GPS) satellite system, magnetic resonance imaging, radar, optical fibre communications, even mobile phones. P. Wolf, S. Tobar, F. Chapelet, A. Luiten, G Santarelli, "Recent Experimental Tests of Special Relativity" in Special Relativity: Will it survive the Next 101 Years?, pp. 451 477 Ed. by J Ehlers and Claus L (Springer, Heidelberg 2006). F. Chapelet, H. Marion, D. Chambon, C. Vian, P. Rosenbusch, S. Bize, G. Santarelli, C. Salomon, A. Luiten, M. Tobar, A. Clairon, "Final advances in atomic springs", Journal de Physique IV 135, 115 117 (2006). Luiten, "Optical frequency synthesis from a cryogenic microwave sapphire oscillator", Optics Express 14 (10), 4316 4327 (2006). M. Tobar, E. Ivanov, C. Locke, P. Stanwix, J. Hartnett, A. Luiten, R. Wouters, S. Bize, G. Santarelli, P. Wolf, A. Clairon, P. Guillemot, "Long term operation and performance of cryogenic sapphire oscillators", IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 53 (12), 2386 2393 (2006). C. Vian, P. Rosenbusch, H. Marion, S Bize, L. Cacciapuoti, M. Abgrall, D. Chambon, G. Satarelli, P. Laurent, A. Tobar, C. Salomon, "Frequency comparison between two atomic fountain clocks at the 10 16 level", Annales Fran des Microtechniques et de Chronom (AFMC) 54, 83 88 (2006). P. Lemonde, P. Laurent, G. Santarelli, M. Abgrall, Y. Sortais, S. Bize, C. Nicolas, S. Zhang, A. Clairon, N. Dimarcq, P. Petit, A. Mann, A. Luiten, S. Chang, C. Salomon, "Cold atom clocks on Earth and Space" in Frequency Measurement and Control: Advanced Techniques and Future Trends, edited by A. N. Luiten (Springer Verlag, Berlin, 2001), pp. 131 152. Luiten, "Accurate Optical Frequency Synthesis" in Frequency Measurement and Control: Advanced Techniques and Future Trends, edited by A. N. Luiten (Springer Verlag, Berlin, 2001), pp. 337 387. Luiten, "Q Factor Measurement" in Wiley Encyclopedia of Electrical and Electronics Engineering, edited by J. Webster (John Wiley and Sons, Madison, WI, 1999), Vol. 17, p. 477 491. This chapter was also selected for reprinting in the single volume Survey of Instrumentation and Measurement by Steven A Dyer, p. 373 386 (J. Wiley and Sons, Madison, WI, 2001) as one of the more important contributions in the original 24 volume encyclopedia. Mann, S. Luiten, "Cryogenic sapphire oscillator with exceptional frequency stability", IEEE Transactions on Instrumentations and Measurement 50, 519 521 (2001). Y. Sortais, S. Bize, M. Abgrall, S. Zhang, C. Nicolas, C. Mandache, P. Lemonde, P. Laurent, G. Santarelli, N. Dimarcq, P. Petit, A. Clairon, A. Mann, A. Luiten, S. Chang, C. Salomon, "Cold atom clocks", Physica Scripta T95, 50 57 (2001). A.
Luiten, R. Kovacich, J. McFerran, "Optical frequency synthesis with 1Hz Resolution", IEEE Transactions on Instrumentation and Measurement 48 (2), 558 562 (1999).
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