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Heisenberg-limited metrology with information recycling
Simon A. Haine, Stuart S. Szigeti, Matthias D. Lang +1
Information recycling has been shown to improve the sensitivity of atom interferometers by exploiting atom-light entanglement. In this paper, we apply information recycling to an i…
Optimal Quantum-Enhanced Interferometry
Matthias D. Lang, Carlton M. Caves
We analyze the ultimate bounds on the phase sensitivity of an interferometer, given the constraint that the state input to the interferometer's initial 50:50 beamsplitter is a…
In-situ characterization of quantum devices with error correction
Joshua Combes, Christopher Ferrie, Chris Cesare +4
Syndrome measurements made in quantum error correction contain more information than is typically used. We show that the statistics of data from syndrome measurements can be used t…