This can be extended to more complex spin motions. Below: spins driven into "polyhedral" trajectories and continuously tracked.. (3/6)

Why do nuclear spins exhibit such emergent stable behavior? We probe this by driving them into a "square" orbit. Spins respond with a wild transient but rapidly stabilize. Stability arises due to thermalization under dipolar couplings. (4/6)

This anticipates "designer" spin motions, highly stable, and continuously trackable. Below: a "pentagonal" orbit seemingly collides into a "square" one. (5/6)

Results illustrate (somewhat overlooked) power inherent in the long coherence of nuclear spins. Applications: quantum sensing, magnetometers, gyroscopes.. Close collaboration and support: Tabor Electronics, Element6. (6/6)

Ajoy Lab @ Berkeley College of Chemistry UC Berkeley Check out the abstract! arxiv.org/abs/2206.14945

Pleased to report new results from Will Beatrez and co-workers. College of Chemistry #NMRchat The influence of an electron as a relaxation source for nuclear spins is measured over several nanometers and hundreds of nuclei. (1/3) arxiv.org/abs/2207.02827

These experiments are based on a surprising observation: nuclear T1rho relaxation times apparently depend on the extent of hyperpolarization injected into them! #DNP Each trace here has >1M points and v. high SNR - key to measuring these differences. (2/3)

Rationale: Far away nuclear spins see lower influence of the electron and survive longer. Modeling of spatio-temporal polarization distribution reveals how electron influences the local nuclear environment. Application: Quantum Info, Optimizing #DNP (3/3)

Really cool talk from Ashok Ajoy using peculiar hyperpolarization to create spin textures, geometrically controlling spin orbits, and using these 13C hyperpolarized spins as local analyte sensors. Excited to see more in the future. #NMRchat

Thank you to Prof. Mizuochi and Nature Physics Nature Physics for an excellent News & Views about our recent article. Excited for new opportunities exploiting highly coherent nuclear spins. College of Chemistry Office of Naval Research (ONR) #NMRchat nature.com/articles/s4156…

Delighted to see our work on time crystals, led by Will Beatrez published Nature Physics! Main takeaway: we implemented a protocol with greatly enhanced throughput for measurement, thanks to hyperpolarization and inductive #NMR readout. College of Chemistry doi.org/10.1038/s41567… 1/4

Discrete time crystals are a non-equilibrium phase of matter in which the system undergoes stable periodic motion (in time), borrowing from the notion of crystallinity as a rigid pattern in space. The striped pattern in this phase diagram shows the time-crystalline phase. 2/4

Our approach uses a pulse sequence containing two inter-leaved pulse trains. The data shows clear formation and melting of time-crystalline order. This is the first example of a time crystal that you can watch in real time -- with a lifetime on the order of 10+ seconds! 3/4

We hope the exquisite level of coherent control offered by nuclear spins can inspire more work using Floquet engineering techniques in the condensed matter physics and nuclear magnetic resonance communities! (Movie shows time crystal forming near flip angles +/-1pi) 4/4

Our work is published in The Journal of Chemical Physics and chosen as Editors' feature and journal cover article! We model hyperpolarization flow in a cascade of avoided crossings, and use it for "ESR via NMR" shorturl.at/fAFO2 Cool fact - all authors here are undergraduates College of Chemistry

Check out our new preprint from College of Chemistry with Jonathan Breeze and Reimer Lab! We show how photoexcited electron spins in pentacene/p-terphenyl crystals can be used as quantum sensors at ambient conditions. #NMRchat (1/4) arxiv.org/abs/2402.13898

The Park Lab got together for the Solar eclipse! So beautiful that Ankur, Licheng, and Arjun couldn’t look away to smile for a photo 😂#Eclipse2024

Checkout our new preprint led by Leo and Paul from College of Chemistry, a collaboration with Roderich Moessner, Marin Bukov, and Hongzheng Zhao! We experimentally realize a time rondeau crystal, which pushes time-crystalline behavior beyond periodic drives! arxiv.org/abs/2404.05620

Take a look at Adrisha & Zack's work developing a flow-based high-precision chemical detection method by integrating quantum sensing w/ droplet microfluidics. Droplets encapsulate ND quantum sensors & analytes to measure analytes w/ low LOD.(1/6)#NMRchat arxiv.org/abs/2404.19313

(1/2) Recently published to Nano Letters, PhD candidate Brian Blankenship has developed a means to pattern dense layers of nanodiamonds (NDs) into intricate patterns. As a demonstration, NDs are crafted into the image of the artwork, "The Creation of Adam" (seen below).