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<td>Physics Colloquium FRIDAY May 2, 2014 - “New Tools for
Precision Metrology: Superluminal Lasers and Atomic
Ensembles with Ultra-High Compton Frequency ” - Dr. Selim
Shahriar</td>
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<th nowrap="nowrap" valign="BASELINE" align="RIGHT">Date: </th>
<td>Mon, 28 Apr 2014 18:30:32 +0000</td>
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<th nowrap="nowrap" valign="BASELINE" align="RIGHT">From: </th>
<td>Wilkinson, Eleonor V <a class="moz-txt-link-rfc2396E" href="mailto:evwilk@wm.edu"><evwilk@wm.edu></a></td>
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<th nowrap="nowrap" valign="BASELINE" align="RIGHT">To: </th>
<td>'<a class="moz-txt-link-abbreviated" href="mailto:physics0607@physics.wm.edu">physics0607@physics.wm.edu</a>'
<a class="moz-txt-link-rfc2396E" href="mailto:physics0607@physics.wm.edu"><physics0607@physics.wm.edu></a></td>
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<th nowrap="nowrap" valign="BASELINE" align="RIGHT">CC: </th>
<td>'<a class="moz-txt-link-abbreviated" href="mailto:undergrads0607@physics.wm.edu">undergrads0607@physics.wm.edu</a>'
<a class="moz-txt-link-rfc2396E" href="mailto:undergrads0607@physics.wm.edu"><undergrads0607@physics.wm.edu></a></td>
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<p class="MsoNormal"><b><u><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black">PHYSICS
COLLOQUIUM</span></u></b><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black">Friday, May 2,
2014</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black">4:00 PM
</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black;background:yellow;mso-highlight:yellow">Small
Hall, Room 111</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><b><span
style="font-size:14.0pt;font-family:"Times New
Roman","serif";color:black">Dr. Selim
Shahriar
</span></b><span
style="font-size:14.0pt;font-family:"Times New
Roman","serif";color:black">[Host: I.
Novikova]<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Times New
Roman","serif";color:black">Northwestern
University<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><b><span
style="font-size:14.0pt;font-family:"Times New
Roman","serif";color:black">Title of Talk:</span></b><o:p></o:p></p>
<p class="MsoNormal"><i><span
style="font-size:14.0pt;font-family:"Times New
Roman","serif";color:black">“New Tools for
Precision Metrology: Superluminal Lasers and Atomic
Ensembles with Ultra-High Compton Frequency”</span></i><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"
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<b><span
style="font-size:14.0pt;line-height:115%;font-family:"Times
New
Roman","serif";mso-fareast-language:EN-US">Abstract:</span></b><span
style="font-size:14.0pt;line-height:115%;font-family:"Times
New
Roman","serif";mso-fareast-language:EN-US">
Precision metrology is the crown jewel of atomic, molecular
and optical physics. It has played a key role in practical
applications such as GPS, inertial navigation, and high
speed communication. It has also played an important role
in testing the fundamental laws of physics with ever
increasing accuracy. In this talk, I will describe two new
tools of precision metrology, with both practical and
fundamental applications. First, I will describe the
superluminal ring laser (SRL), inside which the group
velocity of light may be as high as a million times larger
than that of the vacuum speed of light, without violating
causality or relativity. The SRL and related effects can be
tailored to make ultra-sensitive sensors for practical
applications, as well as for precision tests of General
Relativity and detection of gravitational waves. Second, I
will describe how interferometry at a Compton frequency as
high as ten nonillion Hz (10^31 Hz) or a de Broglie
wavelength as small as ten atto meter (10^-17 m) can be
observed by measuring the collective states of an ensemble
of a million non-interacting cold atoms, behaving as a
single particle. I will describe how this process can be
used to make novel types of atom interferometric gyroscope
and accelerometers as well as atomic clocks, with
enhancement in sensitivity over their conventional
counterparts. <o:p></o:p></span></p>
<p class="MsoNormal"
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style="margin-bottom:10.0pt;text-align:justify;line-height:115%">
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</v:shapetype><v:shape id="Picture_x0020_1" o:spid="_x0000_s1026" type="#_x0000_t75" alt="selim-shahriar" style='position:absolute;left:0;text-align:left;margin-left:344.6pt;margin-top:35.2pt;width:122.45pt;height:91.45pt;z-index:251659264;visibility:visible;mso-wrap-style:square;mso-width-percent:0;mso-height-percent:0;mso-wrap-distance-left:9pt;mso-wrap-distance-top:0;mso-wrap-distance-right:9pt;mso-wrap-distance-bottom:0;mso-position-horizontal:absolute;mso-position-horizontal-relative:text;mso-position-vertical:absolute;mso-position-vertical-relative:text;mso-width-percent:0;mso-height-percent:0;mso-width-relative:page;mso-height-relative:page'>
<v:imagedata src="imap://mfox@mail.jlab.org:993/fetch%3EUID%3E/INBOX%3E141766?part=1.2&filename=image001.jpg" o:title="selim-shahriar" />
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hspace="12" width="163" align="left"><!--[endif]--><b><span
style="font-size:14.0pt;line-height:115%;font-family:"Times
New
Roman","serif";mso-fareast-language:EN-US">Biography:</span></b><span
style="font-size:14.0pt;line-height:115%;font-family:"Times
New
Roman","serif";mso-fareast-language:EN-US">
Dr. Selim Shahriar is a Professor in the Department of
Electrical Engineering and Computer Science, and in the
Department of Physics and Astronomy at Northwestern
University. He is also the Director of the division of
solid state and photonics within EECS. Dr. Shahriar
received his Ph.D. from MIT in 1992. He has published three
hundred seventy six papers. His research interests include
Applications of Slow and Fast Light, Quantum Computing with
Trapped Atoms, Gravitational Wave Detection, Tests of
General Relativity, Holographic and Polarimetric Image
Processing, Nanophotonics, Atomic Clocks, Atom
Interferometry, and Nanolithography using Bose
Condensates. He is a member of the LIGO Scientific
Collaboration and a Fellow of SPIE and OSA. Group URL:
<a moz-do-not-send="true"
href="http://lapt.ece.northwestern.edu/">http://lapt.ece.northwestern.edu/</a><o:p></o:p></span></p>
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<span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black">For more
information please visit
<a moz-do-not-send="true"
href="https://events.wm.edu/event/view/physics/28686">https://events.wm.edu/event/view/physics/28686</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><b><i><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"><o:p> </o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"><o:p> </o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black">*Refreshments
will be served in Room 122 at 3:30 PM</span></i></b><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black">Regards,</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif";color:black">Elle</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Times New
Roman","serif";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Times New
Roman","serif";color:black">******</span><o:p></o:p></p>
<p class="MsoNormal"><b><span
style="font-size:12.0pt;font-family:"Monotype
Corsiva";color:#1F497D">Eleonor V. Wilkinson</span></b><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Georgia","serif"">Administrative
& Office Specialist
</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Georgia","serif"">The
College of William & Mary-Physics<br>
Small Hall, Room 123<br>
300 Ukrop Way<br>
Williamsburg, VA 23185</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Times New
Roman","serif";color:black">Telephone:
757-221-3503</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Times New
Roman","serif";color:black">Fax: 757-221-3540</span><o:p></o:p></p>
<p class="MsoPlainText"> <o:p></o:p></p>
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