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Measurement of the information veloc...

Duke University.

Measurement of the information velocity in fast- and slow-light optical pulse propagation.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Measurement of the information velocity in fast- and slow-light optical pulse propagation.
Author:	Stenner, Michael David.
Description:	168 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-06, Section: B, page: 2986.
Notes:	Supervisor: Daniel J. Gauthier.
Contained By:	Dissertation Abstracts International65-06B.
Subject:	Physics, Optics.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3136837
ISBN:	0496840339

Measurement of the information velocity in fast- and slow-light optical pulse propagation.
Stenner, Michael David.

Measurement of the information velocity in fast- and slow-light optical pulse propagation. - 168 p.

Source: Dissertation Abstracts International, Volume: 65-06, Section: B, page: 2986.

Thesis (Ph.D.)--Duke University, 2004.

Applying this technique to fast-light pulses, where vg/c = -0.051 +/- 0.002, it is found that vi /c = 0.4(+0.7--0.2). In the slow-light case, where vg/c = 0.0097 +/- 0.0003, information is found to propagate at vi/c = 0.6. In the slow-light case, the error bars are slightly more complicated. The fast bound is -0.5c (which is faster than positive values) and the slow bound is 0.2c . These results represent the first measurements of the velocity of information on fast- and slow-light optical pulses and are inconsistent with theories that predict vi = v g for slow-light pulses (or fast-light pulses) and are consistent with relativistic causality and a recent proposal that information always propagates at a velocity vi = c.

ISBN: 0496840339Subjects--Topical Terms:

226935
Physics, Optics.

Measurement of the information velocity in fast- and slow-light optical pulse propagation.
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100 0 $a Stenner, Michael David. $3 227928
245 1 0 $a Measurement of the information velocity in fast- and slow-light optical pulse propagation.
300 $a 168 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-06, Section: B, page: 2986.
500 $a Supervisor: Daniel J. Gauthier.
502 $a Thesis (Ph.D.)--Duke University, 2004.
520 # $a Applying this technique to fast-light pulses, where vg/c = -0.051 +/- 0.002, it is found that vi /c = 0.4(+0.7--0.2). In the slow-light case, where vg/c = 0.0097 +/- 0.0003, information is found to propagate at vi/c = 0.6. In the slow-light case, the error bars are slightly more complicated. The fast bound is -0.5c (which is faster than positive values) and the slow bound is 0.2c . These results represent the first measurements of the velocity of information on fast- and slow-light optical pulses and are inconsistent with theories that predict vi = v g for slow-light pulses (or fast-light pulses) and are consistent with relativistic causality and a recent proposal that information always propagates at a velocity vi = c.
520 # $a In this thesis, a new technique for measuring the information velocity vi is described and implemented for fast- and slow-light media. The fast- and slow-light media are generated using modern dispersion-tailoring techniques that use large atomic coherences to generate strong normal and anomalous dispersion. The information velocity in these media can then be measured using information-theoretic concepts by creating an alphabet of two distinct pulse symbols and transmitting the symbols through the media. By performing a detailed statistical analysis of the received information as a function of time, it is possible to calculate vi. This new technique makes it possible for the first time to measure the velocity of information on optical pulses.
520 # $a This thesis describes a study of the velocity of information on optical pulses propagating through fast- and slow-light media. In fast- and slow-light media, the group velocity vg is faster than the speed of light in vacuum c (vg > c or vg < 0) or slower than c (0 < vg < c) respectively. While it is largely accepted that optical pulses can travel at these extreme group velocities, the velocity of information encoded on them is still the subject of considerable debate. There are many contradictory theories describing the velocity of information on optical pulses, but no accepted techniques for its experimental measurement. The velocity of information has broad implications for the principle of relativistic causality (which requires that information travels no faster than c) and for modern communications and computation.
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650 # 0 $a Physics, Optics. $3 226935
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710 0 # $a Duke University. $3 226880
773 0 # $g 65-06B. $t Dissertation Abstracts International
790 $a 0066
790 1 0 $a Gauthier, Daniel J., $e advisor
791 $a Ph.D.
792 $a 2004
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