Intensity interference in Bragg scattering by acoustic waves with thermal statistics

Chekhova, Maria V.; Kulik, S. P.; Penin, A. N.; Prudkovskii, P. A.

doi:10.1103/physreva.54.r4645

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…It is worthy to mention that the first pioneer experiment in quantum optics is considered to be the work by Hanbury Brown and Twiss [1], who investigated correlations in thermal light by means of a beam splitter and a pair of detectors, outputs of which are analyzed with a coincidence circuit. Since then thermal states have been used in many applications including ghost imaging [2][3][4], quantum illumination [5], and "thermal laser" [6]. Schmidt-like correlations [7] and HOM-interference [8] were also observed for thermal states.…”

Section: Introductionmentioning

confidence: 99%

Multiphoton subtracted thermal states: Description, preparation, and reconstruction

et al. 2017

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We present a study of optical quantum states generated by subtraction of photons from the thermal state. Some aspects of their photon number and quadrature distributions are discussed and checked experimentally. We demonstrate an original method of up to ten photon subtracted state preparation with use of just one single-photon detector. All the states where measured with use of balanced homodyne technique, and the corresponding density matrices where reconstructed. The fidelity between desired and reconstructed states exceeds 99%. Combined with homodyne detection it can also be used for precise measurement of high-order autocorrelation functions.

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Section: Introductionmentioning

confidence: 99%

Multiphoton subtracted thermal states: Description, preparation, and reconstruction

et al. 2017

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“…Thermal states are an important class of mixed Gaussian states, which have played a key role in quantum optics from its inception. [40] These states have since then been used in various practical applications, such as thermal lasers, [41] ghost imaging, [42][43][44] and quantum illumination. [45] Two-mode squeezed thermal (TMST) state [46] have been proposed for use in quantum phase estimation.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Phase Estimation in Parity‐Detection‐Based Mach–Zehnder Interferometer using Non‐Gaussian Two‐Mode Squeezed Thermal Input State

2023

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While the quantum metrological advantages of performing non‐Gaussian operations on two‐mode squeezed vacuum (TMSV) states have been extensively explored, similar studies in the context of two‐mode squeezed thermal (TMST) states are severely lacking. This paper explores the potential advantages of performing non‐Gaussian operations on TMST state for phase estimation using parity detection‐based Mach–Zehnder interferometry and compares it with the TMSV case. To this end, a realistic photon subtraction, addition, and catalysis model is considered. A unified Wigner function of the photon subtracted, photon added, and photon catalyzed TMST state is derived, which is used to obtain the expression for the phase sensitivity. The results show that performing non‐Gaussian operations on TMST states can enhance the phase sensitivity for significant squeezing and transmissivity parameter ranges. Because of the probabilistic nature of these operations, it is of utmost importance to consider their success probability. When the success probability is considered, the photon catalysis operation performed using a high transmissivity beam splitter is the optimal non‐Gaussian operation. This contrasts with the TMSV case, where photon addition is observed as the most optimal. Further, the derived Wigner function of the non‐Gaussian TMST states will be useful for state characterization and various quantum protocols.

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“…Lasers revolutionized medicine, science and technology, but thermal light continues to play an important role in these fields. In quantum optics, thermal light has recently been used for novel types of imaging [1][2][3] and interferometry [4], and even as a resource for quantum mechanical protocols [5] and generation of non-classical states of light [6].…”

Section: Introductionmentioning

confidence: 99%

Thermal light as a mixture of sets of pulses: the quasi-1D example

2017

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The relationship between thermal light and coherent pulses is of fundamental and practical interest. We now know that thermal light cannot be represented as a statistical mixture of single pulses. In this paper we ask whether or not thermal light can be represented as a statistical mixture of sets of pulses. We consider thermal light in a one-dimensional wave-guide, and find a convex decomposition into products of orthonormal coherent states of localized, nonmonochromatic modes.

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Intensity interference in Bragg scattering by acoustic waves with thermal statistics

Cited by 5 publications

References 7 publications

Multiphoton subtracted thermal states: Description, preparation, and reconstruction

Multiphoton subtracted thermal states: Description, preparation, and reconstruction

Enhanced Phase Estimation in Parity‐Detection‐Based Mach–Zehnder Interferometer using Non‐Gaussian Two‐Mode Squeezed Thermal Input State

Thermal light as a mixture of sets of pulses: the quasi-1D example

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