What is Quantum Metrology?

Quantum mechanics is famous for its uncertainty principle that limits what you can measure. But oddly enough, quantum effects can actually help scientists make *better* measurements. This is what the field of quantum metrology is concerned with. In this video I explain what quantum metrology is and go through a few examples of what you can do with it.

The paper I mention about quantum optical tomography is here:

0.54 μm resolution two-photon interference with dispersion cancellation for quantum optical coherence tomography
Masayuki Okano, Hwan Hong Lim, Ryo Okamoto, Norihiko Nishizawa, Sunao Kurimura & Shigeki Takeuchi
Scientific Reports volume 5, Article number: 18042 (2016)

And the paper about quantum enhanced magnetometry is here:

Geometric phase magnetometry using a solid-state spin
K. Arai, J. Lee, C. Belthangady, D. R. Glenn, H. Zhang & R. L. Walsworth
Nature Communications volume 9, Article number: 4996 (2018)

[SAAARC]

Lmao I thought this was about using quantum computing to predict the weather

[Telepathy]

Sabine, I must say, what you are doing right now is inestimably important to the community of minds. Please, just keep going. Fantastic!

[jamesdriscoll]

Working in the semiconductor industry I know that metrology is a critical function in the manufacture of modern semiconductor circuits.

[MeppyMan]

Not only did I learn about an area of physics I had never heard of, but also got investment advice. Perfect :)

[WestOfEarth]

Distinguishing between metrology and meteorology reminded me of my mom who used to confuse my studies in astronomy with astrology. At some point I think I stopped correcting her. Then there's Cosmology and Cosmetology. Anecdotally, I've heard of a female university student mistakenly taking Cosmology 101 thinking it was about cosmetics, but then being absolutely enthralled with cosmology and switching majors. I don't remember where I heard this. Fun with terminology!!

[terrywbreedlove]

This Scientist explains things so clearly and straight to the point. She isn’t purposely speaking over our heads to make herself feel special. She is a very intelligent and talented source of information.for the inquisitive mind.

[lawrenceporcari]

I just finished reading your book, Lost in Math, which I recommend highly to anyone interested in the field, but especially to those who watch your videos. Thank you for all that you do. You make the subject interesting and have a real knack for explaining the complex in a simple, understandable way.

[dyer]

Hey Sabine, I'm about to start my PhD in physics, I just want to thank you for inspiring me, Your videos always keep my curiosity fresh 😁😁

[merthsoft]

"You can't reliably produce something if you don't know what you're doing." - Have you ever met a software engineer :P

[dsnodgrass]

Investing in quantum computing is prospecting for gold; investing in quantum metrology is investing in picks and shovels to sell at the nearest-to-goldfield train station.

[cmilkau]

"Meteorology is about clouds and things like that" - best definition ever. Need to tell the meteorologists, they're gonna love it!

[asiatravellight]

Not sure how you find time to scan through the comments with all these great videos you post, and not to forget, the time consuming entertaining and professionally made music videos. Just want to add that I enjoy listening to your solutions for problems I did note even know existed. The topics are at the edge of what I can and sometime cannot grasp, it enriches my life. Thank you so much!

[manucitomx]

Please don’t stop making these videos. They are the most informative on all of YouTube.

[Nick-zusn]

When she wants to emphasize something, I think she's really very talented at doing it in a way that's effective and clever, a natural-born teacher. I'm reading Lost in Math right now, you should too, it's very engaging.

[amityaffliction]

This is my favorite video series. You are a credit to the scientific community

[dmitrikonnov]

Wollte etwas schreiben, aber ich kann meine Dankbarkeit und Bewunderung über Ihre Arbeit kaum in Worte fassen. Danke!

[warshipsdd-]

This is perhaps the most useful 8 minutes spent on gaining an understanding of practical uses of quantum technology. Very well done and tank you. Excellent work.

[thesmallestatom]

machinists have a great respect for metrology too

[hellavadeal]

Glad i found this channel. Quantum mechanics is so confusing. You help make it more understandable. Thanks.

Nice outfit too. Very pretty

[SteveHillD]

So that's how PET scans work! Thank you for explaining so clearly and succinctly.