Packet 3: Bonus 11

Answer the following about the experimental technique of Sisyphus cooling, for 10 points each.
[10e] Sisyphus cooling allows systems to bypass this cooling method’s lower bound of h-bar times natural linewidth over 2 times k-sub-B. This cooling method is named for the optical effect that causes redshift.
ANSWER: Doppler cooling [accept Doppler effect]
[10m] In Sisyphus cooling, atoms move up a potential and then are subject to this process to move them to another energy state. In lasers, population inversion is achieved by applying this process to the gain medium.
ANSWER: optical pumping
[10h] Sub-Doppler cooling is also achieved through this technique developed by Wineland and Dehmelt. In this technique, an atom in a cavity has its energy reduced to the ground state by emitting one phonon’s energy per cycle.
ANSWER: resolved sideband cooling
<UCLA, Physics> | C. Prelims 3 - Cambridge + UCLA + Stanford B + Virginia

HeardPPBE %M %H %
2112.38100%24%0%

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Conversion

TeamOpponentPart 1Part 2Part 3TotalParts
British ColumbiaUC Berkeley A100010E
BruinGeorgia Tech C100010E
Chicago AGeorgia Tech A100010E
Chicago BToronto B100010E
Columbia BIndiana100010E
CornellWaterloo100010E
HarvardSwarthmore1010020EM
MITMaryland A100010E
NYU ABrown100010E
North CarolinaColumbia A1010020EM
Northwestern AIllinois B1010020EM
Ohio StateWashU100010E
Penn StateMinnesota100010E
PittsburghNYU B100010E
RutgersUCF100010E
Stanford AMichigan1010020EM
TexasGeorgetown100010E
Toronto APurdue1010020EM
UC Berkeley BNorthwestern B100010E
VanderbiltJohns Hopkins100010E
Virginia TechGeorgia Tech B100010E

Summary

TournamentEditionMatchHeardPPBE %M %H %
Main Site2026-04-17✓2112.38100%24%0%