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| Electromechanical Device |
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| Simple Ideas |
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| l | No
change in the state of the cantilever |
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| – | Aharonov-Bohm
interference fringes |
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| l | Cantilever
state changes |
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| – | Fringes
destroyed |
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| l | No
non-destructive measurements |
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| l | But |
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| – | What
about coherent coupling to the cantilever? |
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