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Google Quantum AI has named JILA Fellow Adam Kaufman to lead a new neutral atom quantum computing hardware team, marking a major expansion of its quantum research program. Kaufman will continue his research at JILA and ÃÛÌÒ´«Ã½Æƽâ°æÏÂÔØ, strengthening JILA’s leadership and impact in national and international quantum science.

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.

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.

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.

The U.S. Department of Energy (DOE) has announced a $625 million investment to advance the next phase of the National Quantum Information Science Research Centers, a cornerstone of the National Quantum Initiative. This funding will support five centers dedicated to accelerating quantum technologies that promise transformative impacts on science, industry, and national security. JILA is proud to remain a key partner in QSA through the Q-SEnSE Center, which focuses on quantum sensing and precision measurement.

Our work on high optical access cryogenic system for Rydberg atoms has been published in PRX Quantum - see this viewpoint on our studies.

We used features of alkaline-earth atoms to enhance the timescale coherent many-body physics using Rydberg-dressing, which enables studies of quantum magnetism and the creation of metrologically-useful entanglement. See the paper here.

JILA Fellow, National Institute of Standards and Technology (NIST) Physicist and University of Colorado Boulder physics professor Dr. Adam Kaufman has been awarded the prestigious Presidential Early Career Award for Scientists and Engineers (PECASE). President Joe Biden announced that this accolade represents the highest honor conferred by the U.S. government to early-career scientists and engineers who exhibit extraordinary potential and leadership in their respective fields. Kaufman’s groundbreaking contributions to quantum science have cemented his place among nearly 400 recipients recognized for their innovative research and commitment to advancing scientific frontiers.

JILA Fellow and NIST (National Institute of Standards and Technology) Physicist and University of Colorado Boulder Physics professor Adam Kaufman and his team have ventured into the minuscule realms of atoms and electrons. Their research involves creating an advanced optical atomic clock using a lattice of strontium atoms, enhanced by quantum entanglement—a phenomenon that binds the fate of particles together. This ambitious project could revolutionize timekeeping, potentially surpassing the "standard quantum limit" of precision.

In collaboration with JILA and NIST Fellow Jun Ye, the team highlighted their findings in Nature, demonstrating how their clock, operating under certain conditions, could exceed conventional accuracy benchmarks. Their work advances timekeeping and opens doors to new quantum technologies, such as precise environmental sensors.

Adam Kaufman, a JILA Fellow, NIST Physicist, and ÃÛÌÒ´«Ã½Æƽâ°æÏÂÔØ Physics Professor, has been awarded part of a $1.25 million grant from the Gordon and Betty Moore Foundation as part of its third annual cohort of Experimental Physics Investigators.