Quantum information processing with Schrodinger cats

K Nemoto, A Gilchrist, WJ Munro, TC Ralph, GJ Milburn, SL Braunstein

Research output: Contribution to conferencePaperpeer-review


We investigate the utility of a superposition of coherent states for quantum information processing. We show that quantum computation circuits using coherent states as the logical qubits can be constructed from simple linear networks, conditional measurements and coherent superposition resource states. We can utilize such states and associated quantum circuits for two quantum metrology applications, one for weak force measurements and the second for precise phase estimation. We show in both cases that a sensitivity at the Heisenberg limit is achievable.
Original languageUndefined/Unknown
Publication statusPublished - 2003
Event1st international Symposium on Fluctuations and Noise - Santa Fe, New Mexico, United States
Duration: 1 Jun 20034 Jun 2003


Conference1st international Symposium on Fluctuations and Noise
Country/TerritoryUnited States
CitySanta Fe, New Mexico

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