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Heisenberg-limited quantum sensing and metrology with superpositions of twin-Fock states

机译:海森堡有限的量子感测和计量学与双福克态的叠加

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We discuss the prospects of performing Heisenberg-limited quantum sensing and metrology using a Mach-Zehnder interferometer with input states that are superpositions of twin-Fock states and where photon number parity measurements are made on one of the output beams of the interferometer. This study is motivated by the experimental challenge of producing twin-Fock states on opposite sides of a beam splitter. We focus on the use of the so-called pair coherent states for this purpose and discuss a possible mechanism for generating them. We also discuss the prospect of using other superstitions of twin-Fock states, for the purpose of interferometry.
机译:我们讨论了使用Mach-Zehnder干涉仪进行海森堡有限量子感测和计量的前景,该干涉仪的输入状态是Twin-Fock状态的叠加,并且在干涉仪的输出光束之一上进行了光子数奇偶性测量。这项研究是受到在分束器相反两侧产生双福克态的实验挑战的启发。我们专注于为此目的使用所谓的对相干态,并讨论了生成它们的可能机制。我们还讨论了将双-Fock状态的其他迷信用于干涉测量的前景。

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