SQuInT 2022 Program
Full Program | Thursday | Friday | Saturday | All Sessions | Posters | Talks
SESSION 1: Neutral atoms (Islands Ballroom)Chair: (Jonathan King (Atom Computing)) | |
| 8:30 am - 9:15 am | Adam Kaufman, UC Boulder (invited) Quantum science with microscopically-controlled arrays of alkaline-earth atoms | Abstract. Quantum science with neutral atoms has seen great advances in the past two decades. Many of these advances follow from the development of new techniques for cooling, trapping, and controlling atomic samples. In this talk, I will describe ongoing work where we have explored a new type of atom - alkaline-earth(-like) atoms - for optical tweezer trapping, a technology which allows microscopic control of arrays of 100s to potentially 1000s of atoms. While their increased complexity leads to challenges, alkaline-earth atoms offer new scientific opportunities by virtue of their rich internal degrees of freedom. Combining features of these atoms with tweezer-based control has impacted multiple areas in quantum science, including quantum information processing, quantum simulation, and quantum metrology. |
| 9:15 am - 9:45 am | Yue-Hui Lu, University of California Berkeley Cavity Detection with Single Atom Array | Abstract. We place single atoms inside of high-finesse optical cavity using optical tweezer array. This allows us to: 1. Characterize the dichromatic cavity modes profile using fluorescent single atoms as scanning probes. We demonstrate beyond diffraction limit resolution microscopy of the cavity mode axial and radial patterns. 2.Sequentially state measurement of single atoms with high fidelity and fast speed while maintaining the state coherence of the rest of the atom array. We present this as a means of mid-quantum-circuit measurement protocol, an essential building block for atom array quantum computing. 3.Position multiple atoms inside the cavity mode in spatial patterns that exhibit super/sub-radiance under side pumping, and much more. |
| 9:45 am - 10:15 am | Pablo Poggi, University of New Mexico Period-multiplexing Floquet Time Crystals in spin systems with multi-body interactions | Abstract. We show the emergence of Floquet time crystal (FTC) phases in periodically driven p-spin models, which describe a collection of spin-1/2 particles with all-to-all p-body interactions. Given the mean-field nature of these models, we treat the problem exactly in the thermodynamic limit and show that, for a given value of p, these systems can host various robust time-crystalline responses with period nT,whereT is the period of the drive and n an integer between 2 and p. In particular, the case of four-body interactions (p = 4) gives rise to both a usual period-doubling crystal and also a novel period-quadrupling phase. On the theoretical front, we develop a comprehensive framework to predict robust subharmonic response in classical area-preserving maps, and use this as a basis to predict the occurrence and characterize the stability of the resulting mean-field FTC phases in the quantum regime. Then, we experimentally study these models using a small quantum processor based on atomic spins, and examine the various challenges associated with identifying FTC phases from experimental data. Finally, we discuss applications of Floquet Time Crystals in quantum technologies. |
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SQuInT Chief Organizer
Akimasa Miyake, Associate Professor
amiyake@unm.edu
SQuInT Co-Organizer
Hartmut Haeffner, Associate Professor, UC Berkeley
hhaeffner@berkeley.edu
SQuInT Administrator
Dwight Zier
d29zier@unm.edu
505 277-1850
SQuInT Program Committee
Alberto Alonso, Postdoc, UC Berkeley
Philip Blocher, Postdoc, UNM
Neha Yadav, Postdoc, UC Berkeley
Cunlu Zhou, Postdoc, UNM
SQuInT Founder
Ivan Deutsch, Regents' Professor, CQuIC Director
ideutsch@unm.edu
