How did cooling atoms with lasers revolutionize our understanding of time?

In this episode, we speak with Bill Phillips, Nobel Laureate in Physics, about his groundbreaking work on laser cooling and trapping of atoms: research that not only won him the Nobel Prize but also transformed modern timekeeping and technology. Phillips explains why breaking the Doppler cooling limit changed physics forever and what it means that today’s clocks can measure time differences caused by moving a device just a few millimeters in Earth’s gravity.

We discuss the history of timekeeping from sundials to atomic clocks, how Einstein’s relativity reshaped our view of time, and the serendipitous discovery of sub-Doppler cooling that opened the door to ultra-precise measurement, quantum computing, and fundamental tests of nature. Along the way, Phillips reflects on the culture of physics, the importance of mentorship, and the joy of discovery.

Whether you’re curious about time, relativity, quantum physics, GPS technology, or the frontiers of precision measurement, this conversation offers rare insight into how science, collaboration, and curiosity converge to shape the modern world.

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Michael Dubrovsky: https://x.com/MikeDubrovsky
Misha Shalaginov: https://x.com/MYShalaginov
Xinghui Yin: https://x.com/XinghuiYin

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Apple Podcasts: https://podcasts.apple.com/us/podcast/632nm/id1751170269
Spotify: https://open.spotify.com/show/4aVH9vT5qp5UUUvQ6Uf6OR
Website: [https://www.632nm.com](https://www.632nm.com/)

Timestamps:
00:00 - Intro
01:43 - What is Time?
05:49 - How Did Bill Get Into Atom Cooling?
18:30 - How Do Atomic Clocks Actually Work?
31:08 - History of Atomic Clocks
37:18 - Laser Cooling for Atomic Clocks
40:49 - How To Synchronize Atomic Clocks
43:20 - How Cesium Cooling Was Developed
45:48 - Pushing Beyond the Doppler Limit
49:47 - The Beginning of Thor Labs
52:45 - The Previous Limits were Wrong
1:05:37 - How Bill Broke the Doppler Limit
1:12:22 - What is Optical Pumping?
1:20:27 - Can Atom Trapping Be Leveraged For Cold Fusion?
1:31:32 - What Makes Bill So Lucky?
1:35:25 - How Bill's Work Led to Atomic Clocks
1:41:05 - What Makes Cesium So Good For Atomic Clocks?
1:47:38 - Quantum Effects on Atomic Clocks
1:59:02 - Bose-Einstein Condensates
2:09:05 - Did Bill's Work Lead To Quantum Computing?
2:11:26 - Bill's Thoughts on the Future

#billphillips #nobelprize #laser #atomicclock #dopplereffect #quantumcomputing #quantumphysics #gps #physics #boseeinsteincondensate #theoreticalphysics #relativity

What does it take to turn a banned psychedelic into an FDA-approved medicine?

Visit MAPS to read about the latest progress is psychedelic research: https://maps.org/

In this episode, we speak with Rick Doblin, founder of the Multidisciplinary Association for Psychedelic Studies (MAPS), about the decades-long mission to make MDMA-assisted therapy a legal treatment for PTSD and other mental health conditions. Rick received his PhD from Harvard's Kennedy School of Government in public policy focusing on the regulation of medical use of psychedelics in 2001. Rick shares the science behind MDMA’s therapeutic effects, the strategy for winning over regulators, and the battles over claims of neurotoxicity. We discuss the history of psychedelic research, the rise of the underground therapy movement, and how clinical trials, policy change, and cultural perception must align to move psychedelics from stigma to science.

Whether you’re curious about psychedelic science, drug policy reform, FDA clinical trials, or the future of mental health treatment, this conversation delivers expert insight into the intersection of research, regulation, and real-world impact.

Follow us for more technical interviews with the world’s greatest scientists:

Twitter: https://x.com/632nmPodcast
Instagram: https://www.instagram.com/632nmpodcast?utm_source=ig_web_button_share_sheet&igsh=ZDNlZDc0MzIxNw==
LinkedIn: https://www.linkedin.com/company/632nm/about/
Substack: https://632nmpodcast.substack.com/

Follow our hosts!

Michael Dubrovsky: https://x.com/MikeDubrovsky
Misha Shalaginov: https://x.com/MYShalaginov
Xinghui Yin: https://x.com/XinghuiYin

Subscribe:
Apple Podcasts: https://podcasts.apple.com/us/podcast/632nm/id1751170269
Spotify: https://open.spotify.com/show/4aVH9vT5qp5UUUvQ6Uf6OR
Website: [https://www.632nm.com](https://www.632nm.com/)

Timestamps:

00:00 - Intro
01:32 - How Would Rick Describe a Psychedelic Experience?
05:02 - What is Rick's Favorite Psychedelic?
09:46 - The Underground is Ahead of the Research
12:45 - How Rick Got Interested in Psychedelics
26:39 - Can Psychedelics Stop War?
40:45 - Do People Need Trauma?
45:09 - Is America a Falling Empire?
52:08 - What if MAPS was in the YC?
55:00 - Why was MDMA the Choice to Push for Legality?
1:02:22 - The Origins of Modern Psychedelic Therapy
1:05:20 - Misinformation Around Psychedelics
1:17:12 - How MAPS is Developing Psychedelic Therapies
1:30:13 - How Should Healthy People Use Psychedelics?
1:38:05 - Psychedelic Experiences as Rites of Passage
1:42:02 - Finding Life's Purpose
1:52:49 - Why Do Fears of Psychedelics Persist?
1:56:44 - What Does It Take for Psychedelics to Get FDA Approved?
2:13:55 - Rick's Pet Wolf
2:23:39 - Rick's Last Interaction with his Wolf
2:30:55 - Psychedelic Group Therapy
2:33:37 - We Need More Psychedelic Therapists

Life’s First Blueprint Wasn’t DNA; it was RNA.

Read Jacob Fine’s latest publication here: https://www.sciencedirect.com/science/article/pii/S0022283625001901

Today we spoke with Jacob Fine, graduate student researcher in Computational Biology from the University of Toronto. We explore the physics of replication, the role of entropy and information theory, and how modern biology is reconnecting with theory to understand the most fundamental question in science. Our conversation takes place in a Russian sauna, where the hot and humid environment mimics some of the conditions needed for life to begin.

Follow us for more technical interviews with the world’s greatest scientists:

Twitter: https://x.com/632nmPodcast
Instagram: https://www.instagram.com/632nmpodcast?utm_source=ig_web_button_share_sheet&igsh=ZDNlZDc0MzIxNw==
LinkedIn: https://www.linkedin.com/company/632nm/about/
Substack: https://632nmpodcast.substack.com/

Follow our hosts!

Michael Dubrovsky: https://x.com/MikeDubrovsky
Misha Shalaginov: https://x.com/MYShalaginov
Xinghui Yin: https://x.com/XinghuiYin

Subscribe:
Apple Podcasts: https://podcasts.apple.com/us/podcast/632nm/id1751170269
Spotify: https://open.spotify.com/show/4aVH9vT5qp5UUUvQ6Uf6OR
Website: https://www.632nm.com

Timestamps:
00:00 - Intro
01:22 - What does any theory of the origin of life need to explain?
04:09 - When did people begin researching the origin of life?
06:51 - Competing theories of the origin of life
11:00 - The RNA world hypothesis
21:38 - Biological vs computational error
24:58 - Origin of life is the origin of information
33:30 - Without error, there would be no life
36:07 - Early compartmentalization mechanisms
47:26 - What do we need to prove theories on the origin of life?
57:23 - What makes a useful model for biology?
1:04:44 - What inspired Jacob to investigate the origin of life?
1:09:45 - Jacob's favorite theories for the origin of life
1:11:58 - Do we need a Manhattan project to discover the origin of life?
1:18:49 - What are the next steps for origins of life research?
1:24:06 - Has exposure to religion shaped Jacob’s perspective on science?