INTERFEROMETRIC DETECTION OF OPTICAL-PHASE SHIFTS AT THE HEISENBERG LIMIT
INTERFEROMETRIC DETECTION OF OPTICAL-PHASE SHIFTS AT THE HEISENBERG LIMIT
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DOI：
10.1103/physrevlett.71.1355
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发表时间：
1993-08-30
影响因子：
8.6
通讯作者：
BURNETT, K
中科院分区：
文献类型：
--
作者：
HOLLAND, MJ;BURNETT, K
我们证明了在马赫-曾德尔干涉仪臂中传播的两个场的相对量子相位的不确定性可以通过用两个包含相等光子数的Fock态驱动干涉仪而降低到海森堡极限。这导致最小可检测相移远低于任何干涉仪驱动的相干光源。
We show that the uncertainty in the relative quantum phase of two fields propagating in the arms of a Mach-Zehnder interferometer can be reduced to the Heisenberg limit by driving the interferometer with two Fock states containing equal numbers of photons. This leads to a minimum detectable phase shift far below that of any interferometer driven by a coherent light source.