Hermitian operator of a Mach–Zehnder interferometer combined with parity detection and its applications

Wang, Shuai; Zhang, Jiandong

doi:10.1016/j.optcom.2022.128987

Cited by 6 publications

(2 citation statements)

References 57 publications

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“…For an optical detection system, the probability of successful detection of quantum states is a very important parameter [41][42][43]. The probability of successful detection depends not only on the parameters of the optical instrument but also on the input quantum state and the detected physical quantity.…”

Section: Detection Efficiency Of the Bsmentioning

confidence: 99%

Generating superpositions of quantum states via a beam splitter with position measurement

Ren,

Zhang

2023

Phys. Scr.

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We use the quadrature measurement to generate the novel nonclassical states via the beam splitter with two input states, i.e., a Fock state and a vacuum state. It is interesting to find that the desired target states are the Hermite polynomial excited vacuum states. Our results have shown that the zero-position detection for the position detector, the little photon number in the input state, and the high transmittance of the beam splitter (BS) are beneficial to improve the detection efficiency of finding the output states. The proposed states quantum statistical properties and squeezing effects are also studied in detail via different criteria. Our numerical analysis demonstrates that the output quantum states are new nonclassical states. Compared with the method of photon catalysis, position detection is easier to realize in experiments. Therefore, the results in this paper shall provide theoretical support for the experimental generation of several new nonclassical states.

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Section: Detection Efficiency Of the Bsmentioning

confidence: 99%

Generating superpositions of quantum states via a beam splitter with position measurement

Ren,

Zhang

2023

Phys. Scr.

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“…The optimization of the second BS's transmission coefficient (T ) turns out to be detection scheme dependent, however a general framework for determining it can be outlined [25]. While many detection schemes have been discussed in the literature [27,28,29,30,31,32,33,34], we consider in this work only three among them, namely: the difference-intensity detection [20,25,28] the single-mode intensity detection [20,25,28] and balanced homodyne detection (BHD) [22,25,27,28] schemes.…”

Section: Introductionmentioning

confidence: 99%

Optimal Phase Sensitivity in an Unbalanced Mach-Zehnder Interferometer

Ataman

2023

J. Phys.: Conf. Ser.

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In this work we address the problem of phase sensitivity optimization for an unbalanced Mach-Zehnder interferometer. While the quantum Fisher information can be employed in order to obtain the optimum transmission coefficient for the first beam splitter, this is no longer true for the second one, whose optimization is detection-scheme dependent. We thus consider three commonly used detection schemes and provide the optimal solution for each case. We also provide applications of the optimization method showing that for some input states a non-balanced Mach-Zehnder interferometer can outperform its balanced counterpart in terms of phase sensitivity.

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Parity-based estimation in an SU(1,1) interferometer with photon-subtracted squeezed vacuum states

Hou

Zhang

Wang

2023

Optics Communications

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Hermitian operator of a Mach–Zehnder interferometer combined with parity detection and its applications

Cited by 6 publications

References 57 publications

Generating superpositions of quantum states via a beam splitter with position measurement

Generating superpositions of quantum states via a beam splitter with position measurement

Optimal Phase Sensitivity in an Unbalanced Mach-Zehnder Interferometer

Parity-based estimation in an SU(1,1) interferometer with photon-subtracted squeezed vacuum states

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