Fundamental quantum limit in Mach-Zehnder interferometer

A Angelow, E Stoyanova
2015 Bulgarian Chemical Communications   unpublished
In this article we discuss the concept of standard quantum (shot-noise) limit and fundamental quantum limit (completely quantum mechanical) in Mach-Zehnder Interferometer. With the method of linear invariants the three independent quantum fluctuations are determined in Schrödinger Minimum Uncertainty States. On the base of more general Uncertainty Relation (Schrodinger-1930), we accurately define the notion of fundamental quantum limit. The analytical consideration involves the general term
more » ... he general term Covariance (compare to Variance) of two quantum variables. Explicit new formula for the fundamental quantum limit is obtained.