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Multi-mode Gaussian State Analysis with Total Photon Counting
Arik Avagyan, Emanuel Knill, Scott Glancy
The continuing improvement in the qualities of photon-number-resolving detectors opens new possibilities for measuring quantum states of light. In this work we consider the questio…
Constraints on Gaussian Error Channels and Measurements for Quantum Communication
Alex Kwiatkowski, Ezad Shojaee, Sristy Agrawal +4
Joint Gaussian measurements of two quantum systems can be used for quantum communication between remote parties, as in teleportation or entanglement swapping protocols. Many types…
Coherent coupling and non-destructive measurement of trapped-ion mechanical oscillators
Pan-Yu Hou, Jenny J. Wu, Stephen D. Erickson +10
Precise quantum control and measurement of several harmonic oscillators, such as the modes of the electromagnetic field in a cavity or of mechanical motion, are key for their use a…
Improving quantum state detection with adaptive sequential observations
Shawn Geller, Daniel C. Cole, Scott Glancy +1
For many quantum systems intended for information processing, one detects the logical state of a qubit by integrating a continuously observed quantity over time. For example, ion a…