Adam Kaufman

Assembling a superfluid from individual atoms

Teaser

Since it was first proposed in 2004 by David Weiss and Maxim Olshanii, it has been a goal to see whether atomic rearrangement and high-fidelity ground-state laser cooling could employed to prepare superfluids and low-entropy many-body states of itinerant matter. In this work, we demonstrate such a protocol, opening a new path to assembling ground-state many-body state of bosonic and fermionic quantum systems. 

New proposal for using quantum error correction in metrology

Teaser

In quantum metrology, it has been considered for some time whether quantum error correction can be used to enhance precision measurements. Here, the primary challenge is devising codes ad protocols that correct noise while not correcting the unknown signal being sensed. In this collaboration with the Pichler, we identify some promising conditions for leveraging quantum error correction for enhanced sensing, even when signal and noise couple identically to sensor qubits. 

High-fidelity gates and creation of entangled states in Yb171 nuclear-spin qubits

Teaser

Our paper on preparing entangled states in Yb171 has been accepted in Nature physics! Congratulations to the team! We show high-fidelity gates in the metastable qubit, high-fidelity three-outcome measurements, and coherent mapping of entangled states between the Rydberg, nuclear, and optical qubits. This work suggests several new directions, including in quantum error correction, hybrid digital-analog quantum simulations, and quantum metrology. 

Moretsky

Nate is an undergraduate student at CU Boulder, studying engineering physics and electrical engineering. He has a strong interest in Quantum Science, particularly in solid-state physics and quantum technology applications. He is keen on exploring how fundamental quantum principles can be harnessed for practical devices. Nate joined the Kaufman group as an intern on the strontium experiment, and looks forward to working with quantum metrology and simulation.

Drouin

Before joining the Kaufman Group, Jack completed his undergraduate degree in Baltimore at Johns Hopkins. There, he quickly became fascinated with many-body physics, leading him to work in experimental condensed matter under Prof. Collin Broholm. Using neutron scattering, he investigated quantum magnetism and superconductivity and even tried to synthesize some novel materials. His path to AMO began the first time he heard about optical tweezers. After two years of imaging materials with scattering, the opportunity to catch individual atoms in the catch was too good to pass up.

Weiss

Alison graduated from Amherst College with a degree in Physics and Computer Science. During college, she gained exposure to several areas of physics. She worked on topological photonics research in Mikael Rechtsman's group at Penn State and on an antihydrogen hyperfine structure measurement experiment at CERN. For her undergraduate thesis, she characterized and mitigated various sources of error on Professor Larry Hunter's long-range spin-spin interaction precision measurement experiment.

Marsh

Brendan investigates many-body quantum physics with ultracold atoms and photons to realize novel quantum systems and harness them for practical or computational benefit. Before joining JILA as a post-doctoral researcher with Prof. Adam Kaufman and Prof. Cindy Regal, he completed his Ph.D. with Prof. Benjamin Lev at Stanford in the area of multimode cavity QED.

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