Characterization of Quantumness of non-Gaussian states under the influence of Gaussian channel

• URL: http://arxiv.org/abs/2212.11510v1
• Date: Thu, 22 Dec 2022 07:13:41 GMT
• Title: Characterization of Quantumness of non-Gaussian states under the influence of Gaussian channel
• Authors: Ramniwas Meena, Subhashish Banerjee
• Abstract summary: The impact of a noisy Gaussian channel on a wide range of non-Gaussian input states is studied. It is found that photon addition has more robust quantum mechanical properties as compared to the photon subtraction case.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The impact of a noisy Gaussian channel on a wide range of non-Gaussian input states is studied in this work. The nonclassical nature of the states, both input and output, is developed by studying the corresponding photon statistics and quasi-probability distributions. It is found that photon addition has more robust quantum mechanical properties as compared to the photon subtraction case. The threshold value of the noise parameter corresponding to the transition from partial negative (W and P ) and zero (Q) to completely positive definite, at the center of phase space, depends not only on the average number of thermal photons in the state, but also on the squeezing parameter. In addition it is observed that the nonclassicality of the kth-number filtrated thermal state could be further enhanced by adding photon(s).

Related papers

• Wavevector-resolved polarization entanglement from radiative cascades [27.84599956781646]
  We show that there exists an interplay between photon polarization and emission wavevector, strongly affecting quantum correlations when emitters are embedded in micro-cavities. Our results, backed by theoretical modelling, yield a brand-new understanding of cascaded emission for various quantum emitters.
  arXiv  Detail & Related papers  (2024-09-12T09:32:29Z)
• Detecting Nonclassicality and quantum non-Gaussianity of photon subtracted displaced Fock state [3.42658286826597]
  quantitative investigation of the non-classical and quantum non-Gaussian characters of the photon-subtracted displaced Fock state. It is noticed that the number of photons subtracted ($k$) changes the nonclassicality and quantum non-Gaussianity in a significant amount. Wigner function dynamics considering the effects of photon loss channel is used to show that the Wigner negativity can only be exposed by highly efficient detectors.
  arXiv  Detail & Related papers  (2023-06-07T15:01:12Z)
• Observation of a superradiant phase transition with emergent cat states [18.801683138820948]
  Superradiant phase transitions (SPTs) are important for understanding light-matter interactions at the quantum level. We report an experimental demonstration of the SPT featuring the emergence of a highly nonclassical photonic field.
  arXiv  Detail & Related papers  (2022-07-12T13:12:23Z)
• Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics [12.706932285002544]
  We predict quantum non-Hermitian phenomena: the fractional quantum Zeno (FQZ) effect and FQZ-induced photon antibunching. We find FQZ-induced strong photon antibunching in the steady state of a driven emitter even for weak nonlinearities. Remarkably, we identify that the sub-Poissonian quantum statistics of photons, which has no classical analogs, stems here from the key role of non-Hermiticity.
  arXiv  Detail & Related papers  (2022-07-07T17:41:24Z)
• Decoherence and nonclassicality of photon-added/subtracted multi-mode Gaussian states [0.0]
  We analyze the Wigner negativity and quadrature coherence scale (QCS) of the resulting states. The QCS is a recently introduced measure of nonclassicality. We certify the non-Gaussianity of the photon-subtracted states with positive Wigner function.
  arXiv  Detail & Related papers  (2022-04-13T13:13:12Z)
• Realistic non-Gaussian operations scheme in parity detection based Mach-Zehnder quantum interferometry [1.9386782072251818]
  We theoretically analyze phase sensitivity using parity detection based Mach Zehnder interferometer (MZI) We consider the realistic model of photon subtraction, addition, and subtraction and derive a single expression of the Wigner function for photon subtracted, added, and catalyzed TMSV state. We identify the ranges of squeezing and transmissivity parameters where the non-Gaussian states provide better phase sensitivity than the TMSV state.
  arXiv  Detail & Related papers  (2022-02-20T16:13:45Z)
• Enhancement of non-Gaussianity and nonclassicality of photon added displaced Fock state: A quantitative approach [0.0]
  The role of Fock parameter is found to be more prominent and stronger compared to photon addition. The dynamics of Wigner function under the effect of photon loss channel is used to show that only highly efficient detectors are able to detect Wigner negativity.
  arXiv  Detail & Related papers  (2021-09-24T18:50:56Z)
• Enhanced nonlinear quantum metrology with weakly coupled solitons and particle losses [58.720142291102135]
  We offer an interferometric procedure for phase parameters estimation at the Heisenberg (up to 1/N) and super-Heisenberg scaling levels. The heart of our setup is the novel soliton Josephson Junction (SJJ) system providing the formation of the quantum probe. We illustrate that such states are close to the optimal ones even with moderate losses.
  arXiv  Detail & Related papers  (2021-08-07T09:29:23Z)
• Conditional preparation of non-Gaussian quantum optical states by mesoscopic measurement [62.997667081978825]
  Non-Gaussian states of an optical field are important as a proposed resource in quantum information applications. We propose a novel approach involving displacement of the ancilla field into the regime where mesoscopic detectors can be used. We conclude that states with strong Wigner negativity can be prepared at high rates by this technique under experimentally attainable conditions.
  arXiv  Detail & Related papers  (2021-03-29T16:59:18Z)
• Can we control the amount of useful nonclassicality in a photon added hypergeometric state? [0.0]
  We study the role of photon addition, a non-Gaussianity inducing operation, in the enhancement of nonclassicality in a finite dimensional quantum state. In principle, decreasing the dimension of the state is analogous to holeburning and is thus expected to increase nonclassicality.
  arXiv  Detail & Related papers  (2020-07-28T14:34:14Z)
• Entanglement robustness to excitonic spin precession in a quantum dot [43.55994393060723]
  A semiconductor quantum dot (QD) is an attractive resource to generate polarization-entangled photon pairs. We study the excitonic spin precession (flip-flop) in a family of QDs with different excitonic fine-structure splitting (FSS) Our results reveal that coherent processes leave the time post-selected entanglement of QDs unaffected while changing the eigenstates of the system.
  arXiv  Detail & Related papers  (2020-01-31T13:50:51Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.