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Completed TRL 3 (started at 2, targeting 3)
This proposal outlines ongoing and future work pertaining to the development and characterization of quantum devices. The suggested methodologies borrow ideas and rely on techniques from quantum information theory. Specifically, four projects are discussed: developing single-site rotations in a Penning trap as a scalable mode of quantum computation, enabling large-scale quantum optimization in a neutral atom trap, benchmarking quantum computers with a quantum error detecting code, and bounding the integrated quantum Fisher information for metrological protocols. The first two projects are experimental collaborations working towards quantum computation with hundreds of qubits. The last two projects work towards developing theory to benchmark quantum computers and build quantum sensors. The first project is using an electromagnetic trap to confine ions, and perform manipulations on individual ions in the trap. These in turn will enable the use of the trap as a quantum computer. The second project involves developing algorithms for solving combinatorial optimization problems using a classical computer in tandem with a quantum computer. This research considers the particular case of hundreds of qubits, with noisy and slow measurements. The third project is continuing to develop an error detecting code that can be used to encode one logical qubit into four physical qubits. The proposed work provides a method for demonstrating genuine quantum error correction, as well as developing benchmarks for noisy quantum computers. Finally, the last project discusses developing theoretical bounds on a quantity in quantum information theory. By deriving these bounds, we will be able to build quantum sensors that are maximally sensitive over a range of frequencies.
The goal of this project is to develop and characterize quantum devices, building quantum sensors that are maximally sensitive over a range of frequencies.
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