Standard Quantum Limits for broadband position measurement

Details Standard Quantum Limits for broadband position measurement Standard Quantum Limits for broadband position measurement

1998-01-20

arxiv.org/abs/quant-ph/9801039v3

Physics

Quantum Physics

Replaced version: changed title, fixed algebra error at the very end, conclusions modified accordingly. Four pages, one eps fi

Scientific paper

10.1103/PhysRevA.58.123

I utilize the Caves-Milburn model for continuous position measurements to formulate a broadband version of the Standard Quantum Limit (SQL) for monitoring the position of a free mass, and illustrate the use of Kalman filtering to recover the SQL for estimating a weak classical force that acts on a quantum-mechanical test particle under continuous observation. These derivations are intended to clarify the interpretation of SQL's in the context of continuous quantum measurement.

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