Amir Safavi-Naeini
@safavi.bsky.social
Building cool quantum, photonic, and nanomechanical stuff as Prof at Stanford.
https://quantum-noise.ghost.io
https://quantum-noise.ghost.io
Putting my thoughts together. Why networks beat "hero" sensors and what birds can teach us.
quantum-noise.ghost.io/quantum-sens...
quantum-noise.ghost.io/quantum-sens...
Quantum Sensing Like a Bird
A few nights ago I was on a panel on Quantum Sensing for Defense. Preparing for this panel crystallized some ideas for me, which I think I should write down somewhere. So here it is!
When we talk abo...
quantum-noise.ghost.io
September 28, 2025 at 7:23 PM
Putting my thoughts together. Why networks beat "hero" sensors and what birds can teach us.
quantum-noise.ghost.io/quantum-sens...
quantum-noise.ghost.io/quantum-sens...
Reposted by Amir Safavi-Naeini
Did a little interview with @acs.org Axial for an ACS and @spie.org award: axial.acs.org/physical-che...
Meet the Winner of the 2026 ACS Photonics Young Investigator Lectureship Award | ACS Publications Chemistry Blog
Read an exclusive interview with the winner, Mikhail Kats, and learn more about his work and career.
axial.acs.org
July 7, 2025 at 6:47 PM
Did a little interview with @acs.org Axial for an ACS and @spie.org award: axial.acs.org/physical-che...
PROJECT HAIL MARY Trailer (2025) Ryan Gosling
YouTube video by ONE Media
youtu.be
July 1, 2025 at 5:17 AM
Reposted by Amir Safavi-Naeini
Watch Oskar Painter's presentation from Quantum Korea in Seoul. As Director of Quantum Hardware at AWS Center for Quantum Computing, he discusses the 'quantum tyranny of numbers' & forecasts major quantum error correction advances
www.youtube.com/watch?v=Ojnf...
#QuantumComputing #AWS
www.youtube.com/watch?v=Ojnf...
#QuantumComputing #AWS
퀀텀 코리아 2025 키노트① Oskar Painter
YouTube video by 퀀텀코리아(Quantumkorea)
www.youtube.com
June 28, 2025 at 12:02 AM
Watch Oskar Painter's presentation from Quantum Korea in Seoul. As Director of Quantum Hardware at AWS Center for Quantum Computing, he discusses the 'quantum tyranny of numbers' & forecasts major quantum error correction advances
www.youtube.com/watch?v=Ojnf...
#QuantumComputing #AWS
www.youtube.com/watch?v=Ojnf...
#QuantumComputing #AWS
Reposted by Amir Safavi-Naeini
Lindblad is for everyone!
arxiv.org/abs/2506.22436
arxiv.org/abs/2506.22436
Is Lindblad for me?
The Lindblad master equation is a foundational tool for modeling the dynamics of open quantum systems. As its use has extended far beyond its original domain, the boundaries of its validity have grown...
arxiv.org
June 30, 2025 at 1:05 PM
Lindblad is for everyone!
arxiv.org/abs/2506.22436
arxiv.org/abs/2506.22436
A major milestone in my career, as one of the self-appointed knights of quantum.
Not bullshit
A quantum computer is a physical machine that can execute quantum algorithms with at most polynomial resource scaling.
June 26, 2025 at 1:30 AM
A major milestone in my career, as one of the self-appointed knights of quantum.
Reposted by Amir Safavi-Naeini
Raymond Laflamme 1960-2025. A great scientist, renowned for his pioneering contributions to quantum error correction. A great leader, founding director of the Institute for Quantum Computing. A great colleague and teacher whose legacy continues to inspire us.
uwaterloo.ca/institute-fo...
uwaterloo.ca/institute-fo...
IQC and Waterloo mourn the loss of Raymond Laflamme | Institute for Quantum Computing | University of Waterloo
Raymond Laflamme, a trailblazer in quantum information processing and pioneer of the Institute for Quantum Computing (IQC) at the University of Waterloo, died on June 19 after a lengthy battle with ca...
uwaterloo.ca
June 21, 2025 at 10:41 PM
Raymond Laflamme 1960-2025. A great scientist, renowned for his pioneering contributions to quantum error correction. A great leader, founding director of the Institute for Quantum Computing. A great colleague and teacher whose legacy continues to inspire us.
uwaterloo.ca/institute-fo...
uwaterloo.ca/institute-fo...
Reposted by Amir Safavi-Naeini
He's right. "Nothing short of devastating"
By @holdenthorp.bsky.social @science.org
www.science.org/doi/10.1126/...
By @holdenthorp.bsky.social @science.org
www.science.org/doi/10.1126/...
June 5, 2025 at 8:41 PM
He's right. "Nothing short of devastating"
By @holdenthorp.bsky.social @science.org
www.science.org/doi/10.1126/...
By @holdenthorp.bsky.social @science.org
www.science.org/doi/10.1126/...
Michael Roukes kicking off #FNS2025, going back 30 years to the beginning of NEMs. (explaining this paper arxiv.org/abs/2505.04574 which was then rejected by APL!)
June 3, 2025 at 6:32 AM
Michael Roukes kicking off #FNS2025, going back 30 years to the beginning of NEMs. (explaining this paper arxiv.org/abs/2505.04574 which was then rejected by APL!)
Reposted by Amir Safavi-Naeini
The building committee gets a first look at the basement of the Ginsburg Center for Quantum Precision Measurement at Caltech. We're standing where a tunnel will connect Ginsburg labs to labs in neighboring Downs Laboratory. With me are Nick Hutzler, Rana Adhikari, Michelle Effros, and Dave Hsieh.
May 31, 2025 at 6:49 PM
The building committee gets a first look at the basement of the Ginsburg Center for Quantum Precision Measurement at Caltech. We're standing where a tunnel will connect Ginsburg labs to labs in neighboring Downs Laboratory. With me are Nick Hutzler, Rana Adhikari, Michelle Effros, and Dave Hsieh.
Reposted by Amir Safavi-Naeini
New paper out! We resonantly couple a superconducting heavy-fluxonium qubit ⚛️ to a macroscopic membrane 🥁 oscillating at a few MHz. ~300 repeated interactions let us track its quantum motion, observe back-action & probe non-commuting operators. Diósi–Penrose next? (1/8)
arxiv.org/abs/2505.21481
arxiv.org/abs/2505.21481
Probing the quantum motion of a macroscopic mechanical oscillator with a radio-frequency superconducting qubit
Long-lived mechanical resonators like drums oscillating at MHz frequencies and operating in the quantum regime offer a powerful platform for quantum technologies and tests of fundamental physics. Yet,...
arxiv.org
May 28, 2025 at 5:25 PM
New paper out! We resonantly couple a superconducting heavy-fluxonium qubit ⚛️ to a macroscopic membrane 🥁 oscillating at a few MHz. ~300 repeated interactions let us track its quantum motion, observe back-action & probe non-commuting operators. Diósi–Penrose next? (1/8)
arxiv.org/abs/2505.21481
arxiv.org/abs/2505.21481
At the beautiful Les Houches for a workshop on TFLN #photonics 💡
Here are my lecture notes:
quantum-noise.ghost.io/les-houches-...
Here are my lecture notes:
quantum-noise.ghost.io/les-houches-...
Les Houches lecture notes
Spending a few days at Les Houches workshop on TFLN photonics 😄
Here are my lecture notes. These are currently a very rough draft, though fairly respectable looking... I used Gemini 2.5 pretty heavil...
quantum-noise.ghost.io
May 20, 2025 at 8:31 PM
At the beautiful Les Houches for a workshop on TFLN #photonics 💡
Here are my lecture notes:
quantum-noise.ghost.io/les-houches-...
Here are my lecture notes:
quantum-noise.ghost.io/les-houches-...
Reposted by Amir Safavi-Naeini
Big: The final version of a randomized, controlled World Bank study finds using a GPT-4 tutor with teacher guidance in a six week afterschool program in Nigeria had "more than twice the effect of some of the most effective interventions in education" ("equating to 1.5 to 2 years" of standard school)
May 20, 2025 at 8:07 PM
Big: The final version of a randomized, controlled World Bank study finds using a GPT-4 tutor with teacher guidance in a six week afterschool program in Nigeria had "more than twice the effect of some of the most effective interventions in education" ("equating to 1.5 to 2 years" of standard school)
Morning prayer for the faithful
States 𝜌 are psd matrices with unit trace; measurements E_k are psd and ∑_k E_k = Id; probability of outcome k is Tr(E_k 𝜌); Dynamics are unitary matrices acting by conjugation. Computations start in some state, |0⟩⟨0|^⊗n, apply local unitaries and output is a measurement in the standard basis. QED
May 20, 2025 at 3:26 PM
Morning prayer for the faithful
Reposted by Amir Safavi-Naeini
These notes are amazing, just the right amount of detail and insight! Thanks!
May 9, 2025 at 9:19 AM
These notes are amazing, just the right amount of detail and insight! Thanks!
Every time I am tempted and I start using Markdown + Tex equations, after getting to document that’s more than 2 pages long I just end up coming back to full LaTeX.
May 9, 2025 at 4:56 PM
Every time I am tempted and I start using Markdown + Tex equations, after getting to document that’s more than 2 pages long I just end up coming back to full LaTeX.
Reposted by Amir Safavi-Naeini
A collaboration between the Moerner and Qi Labs has produced a tool to track real-time genome dynamics in living cells — combining single-molecule imaging + CRISPR innovation. 🧬
🔗 chemistry.stanford.edu/news/new-too...
#MoernerLab #QiLab #GenomeImaging #CRISPR
🔗 chemistry.stanford.edu/news/new-too...
#MoernerLab #QiLab #GenomeImaging #CRISPR
May 3, 2025 at 6:19 PM
A collaboration between the Moerner and Qi Labs has produced a tool to track real-time genome dynamics in living cells — combining single-molecule imaging + CRISPR innovation. 🧬
🔗 chemistry.stanford.edu/news/new-too...
#MoernerLab #QiLab #GenomeImaging #CRISPR
🔗 chemistry.stanford.edu/news/new-too...
#MoernerLab #QiLab #GenomeImaging #CRISPR
And here’s my first post :)
Ever wondered what “free energy” is?
Ever wondered what “free energy” is?
May 2, 2025 at 5:30 AM
And here’s my first post :)
Ever wondered what “free energy” is?
Ever wondered what “free energy” is?
I decided to make a website. I’ll post stuff on it every once in a while.
May 2, 2025 at 5:21 AM
I decided to make a website. I’ll post stuff on it every once in a while.
Reposted by Amir Safavi-Naeini
#maddow
Science break.
This kayaker gets approached by an otter every time he visits a lake. The otter was orphaned after the mother was in an accident, and the man helped it throughout it's rehabilitation process to later release it back into the wild. Volume up.🔊
Science break.
This kayaker gets approached by an otter every time he visits a lake. The otter was orphaned after the mother was in an accident, and the man helped it throughout it's rehabilitation process to later release it back into the wild. Volume up.🔊
February 25, 2025 at 2:24 AM
#maddow
Science break.
This kayaker gets approached by an otter every time he visits a lake. The otter was orphaned after the mother was in an accident, and the man helped it throughout it's rehabilitation process to later release it back into the wild. Volume up.🔊
Science break.
This kayaker gets approached by an otter every time he visits a lake. The otter was orphaned after the mother was in an accident, and the man helped it throughout it's rehabilitation process to later release it back into the wild. Volume up.🔊
Reposted by Amir Safavi-Naeini
We press forward with determination, grounded in the values that have made us a trusted and effective advocate for ocean conservation. We lead with hope. The path may not always be straight, but our commitment and belief in humanity’s ability to come together and heal the planet is still unwavering.
April 22, 2025 at 10:46 PM
We press forward with determination, grounded in the values that have made us a trusted and effective advocate for ocean conservation. We lead with hope. The path may not always be straight, but our commitment and belief in humanity’s ability to come together and heal the planet is still unwavering.
Reposted by Amir Safavi-Naeini
If you are interested in quantum computing, I strongly recommend this insightful article by @caltech.edu
student @robbieking1000.bsky.social calling for a "scrappier approach" to finding new applications.
quantumfrontiers.com/2025/04/20/q...
student @robbieking1000.bsky.social calling for a "scrappier approach" to finding new applications.
quantumfrontiers.com/2025/04/20/q...
Quantum Algorithms: A Call To Action
Quantum computing finds itself in a peculiar situation. The number one question asked about quantum computers by outsiders is very common sensical: What are they good for? The honest answer reveals…
quantumfrontiers.com
April 21, 2025 at 2:39 PM
If you are interested in quantum computing, I strongly recommend this insightful article by @caltech.edu
student @robbieking1000.bsky.social calling for a "scrappier approach" to finding new applications.
quantumfrontiers.com/2025/04/20/q...
student @robbieking1000.bsky.social calling for a "scrappier approach" to finding new applications.
quantumfrontiers.com/2025/04/20/q...
Reposted by Amir Safavi-Naeini
I've been revamping and updating my collection of selected references to topics in quantum information on my homepage.
Comments, feedback and suggestions welcome!
felixleditzky.info/selected_ref...
Comments, feedback and suggestions welcome!
felixleditzky.info/selected_ref...
March 27, 2025 at 5:27 PM
I've been revamping and updating my collection of selected references to topics in quantum information on my homepage.
Comments, feedback and suggestions welcome!
felixleditzky.info/selected_ref...
Comments, feedback and suggestions welcome!
felixleditzky.info/selected_ref...
Crazy!
You're looking at three golden tortoise beetles (Charidotella sexpunctata). They're native to the Americas, generally the east coast of North America all the way down to Argentina.
The gold coloration is structural, semi-reflective layers in the cuticle selectively reflect wavelengths of light.
The gold coloration is structural, semi-reflective layers in the cuticle selectively reflect wavelengths of light.
March 26, 2025 at 2:03 PM
Crazy!