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Shedding light on classical shadows: learning photonic quantum states
Hugo Thomas, Ulysse Chabaud, Pierre-Emmanuel Emeriau
https://arxiv.org/abs/2510.07240 https://

Shedding light on classical shadows: learning photonic quantum states
Efficient learning of quantum state properties is both a fundamental and practical problem in quantum information theory. Classical shadows have emerged as an efficient method for estimating properties of unknown quantum states, with rigorous statistical guarantees, by performing randomized measurement on a few number of copies. With the advent of photonic technologies, formulating efficient learning algorithms for such platforms comes out as a natural problem. Here, we introduce a classical sh…

Moody Urbanity - In and Out of the Shadow II 👤
情绪化城市 - 阴影的内外 II 👤
📷 Nikon FE
🎞️ ERA 100, expired 1993
#filmphotography #Photography #blackandwhite

Correlation of Rankings in Matching Markets
R\'emi Castera, Patrick Loiseau, Bary S. R. Pradelski
https://arxiv.org/abs/2512.05304 https://arxiv.org/pdf/2512.05304 https://arxiv.org/html/2512.05304
arXiv:2512.05304v1 Announce Type: new
Abstract: We study the role of correlation in matching markets, where multiple decision-makers simultaneously face selection problems from the same pool of candidates. We propose a model in which a candidate's priority scores across different decision-makers exhibit varying levels of correlation dependent on the candidate's sociodemographic group. Such differential correlation can arise in school choice due to the varying prevalence of selection criteria, in college admissions due to test-optional policies, or due to algorithmic monoculture, that is, when decision-makers rely on the same algorithms and data sets to evaluate candidates. We show that higher correlation for one of the groups generally improves the outcome for all groups, leading to higher efficiency. However, students from a given group are more likely to remain unmatched as their own correlation level increases. This implies that it is advantageous to belong to a low-correlation group. Finally, we extend the tie-breaking literature to multiple priority classes and intermediate levels of correlation. Overall, our results point to differential correlation as a previously overlooked systemic source of group inequalities in school, university, and job admissions.
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🇺🇦 #NowPlaying on BBCRadio3's #ClassicalMixtape
Wolfgang Amadeus Mozart, Michael Collins, Michael Collins & Swedish Chamber Orchestra:
🎵 Clarinet Concerto in A major, K 622 (2nd mvt)
#WolfgangAmadeusMozart
https://open.spotify.com/track/5qvR2LR2BNW4vBuho9M9zL

Documents and source: WBD CEO David Zaslav's stock in WBD would be worth close to $660M if the Netflix deal closes (Alex Sherman/CNBC)
https://www.cnbc.com/2025/12/05/paramount-david-ellison-wbd-bidding-war-hostile-bid.html

Lithuania shuts down airports for 3rd night in row, closes border crossings indefinitely due to balloons from Belarus: https://benborges.xyz/2025/10/27/lithuania-shuts-down-airports-for.html

🔊 #NowPlaying on #BBCRadio3:
#ClassicalLive
- Tchaikovsky’s Violin Concerto
Elizabeth Alker marks the 90th birthday of the BBC Scottish Symphony Orchestra, she also has exclusive recordings of great Romantic violin concertos and chamber music from Sweden.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002mkcp

🔊 #NowPlaying on #BBCRadio3:
#ClassicalLive
- Bruckner’s Symphony No 7
Elizabeth Alker marks the 90th birthday of the BBC Scottish Symphony Orchestra, she also has exclusive recordings of great Romantic violin concertos and chamber music from Sweden.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002mkb0

🔊 #NowPlaying on #BBCRadio3:
#ClassicalLive
- Tchaikovsky's 1st Piano Concerto
Mark Forrest introduces an afternoon of recordings from the BBC Scottish Symphony Orchestra including pianist Alim Beisembayev, performing the Tchaikovsky 1st Piano Concerto.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002lcpv

🔊 #NowPlaying on #BBCRadio3:
#ClassicalLive
- Beethoven’s Eroica
Elizabeth Alker marks the 90th birthday of the BBC Scottish Symphony Orchestra, she also has exclusive recordings of great Romantic violin concertos and chamber music from Sweden.
Relisten now 👇
https://www.bbc.co.uk/programmes/m002ml85