A phase-space approach for performing continuous-variable quantum teleportation with a non-Gaussian resource

• URL: http://arxiv.org/abs/2606.25471v1
• Date: Wed, 24 Jun 2026 06:54:18 GMT
• Title: A phase-space approach for performing continuous-variable quantum teleportation with a non-Gaussian resource
• Abstract summary: We investigate the usefulness of PS-TMSFS within the Braunstein-Kimble teleportation protocol.<n>PS-TMSFS may not be a suitable resource for continuous-variable quantum teleportation.
• Score: 0.3867363075280543
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present a comprehensive phase-space analysis of continuous-variable quantum teleportation employing a photon-subtracted two-mode squeezed Fock state (PS-TMSFS) as an entangled resource. We investigate the usefulness of PS-TMSFS within the Braunstein-Kimble teleportation protocol. We explain the generation scheme for the resource state and derive the analytical expression for the success probability associated with the photon-subtraction process. The Wigner characteristic function of PS-TMSFS is calculated and then employed to determine the fidelity for coherent and squeezed state inputs. The dependence of the success probability and teleportation fidelity on the squeezing parameter and beam-splitter transmissivity is analyzed in detail for both symmetric and asymmetric photon-subtraction scenarios. We find that the teleportation fidelity exhibits a strong dependence on the resource parameters and is highly sensitive to variations in the subtraction process. The photon-subtraction process modifies the non-Gaussianity of the resource state, but no substantial enhancement of the teleportation fidelity is detected. Despite the non-Gaussian character of the resource state, fidelity above the classical coherent-state benchmark is observed only for the symmetric $(1,1) $ photon-subtraction configuration in the low-squeezing regime that decreases with increasing squeezing. The remaining configurations remain below the classical threshold throughout the parameter range considered. These findings indicate that the PS-TMSFS may not be a suitable resource for continuous-variable quantum teleportation and offers insight into the limitations of this class of non-Gaussian states.

Related papers

• Negative quasiprobability trajectories for Bell-diagonal states under local decoherence [19.652683177954298]
  We analytically determine the properties of negative distributions based on the two-qubit Bell-diagonal states evolving under local dephasing, depolarizing, and amplitude-damping channels.<n>We prove that quasiprobability distributions containing negative weights can violate Horvth's necessary and sufficient criterion for the Jensen-Steffensen inequality to hold for every continuous convex function.
  arXiv  Detail & Related papers  (2026-08-17T10:10:29Z)
• Integrated Generation and Purification of Entangled Coherent States for Non-Gaussian Teleportation [0.0]
  Entangled coherent states (ECS) provide a powerful non-Gaussian resource for continuous quantum communication.<n>We propose an integrated photonic scheme that creates high-variable ECS from a two-mode squeezed vacuum.<n>We demonstrate high-fidelity transfer of both coherent states and Schrodinger cat states.
  arXiv  Detail & Related papers  (2025-12-11T02:18:31Z)
• Observation of Genuine Tripartite Non-Gaussian Entanglement from a Superconducting Three-Photon Spontaneous Parametric Down-Conversion Source [30.88835424007021]
  We report on the observation of genuine tripartite non-Gaussian entanglement in the steady-state output field of a 3P-SPDC source.<n>We find strong agreement between the observed and the analytically predicted scaling of the entanglement witness.
  arXiv  Detail & Related papers  (2025-10-06T21:53:31Z)
• Dynamical learning and quantum memory with non-Hermitian many-body systems [37.69303106863453]
  Non-Hermitian (NH) systems provide a fertile platform for quantum technologies.<n>We investigate this relationship using the example of an interacting NH spin system defined on random graphs.<n>We show that the onset of the first exceptional point corresponds to an abrupt change in the system's learning capacity.
  arXiv  Detail & Related papers  (2025-06-09T11:58:40Z)
• Continuous variable quantum teleportation, $U(2)$ invariant squeezing and non-Gaussian resource states [4.2073870486782035]
  We investigate the role of quadrature squeezing in the quantum teleportation protocol for coherent states, using non-Gaussian resource states.<n>We show that the presence of such non-classicality in non-Gaussian resource states is not necessary for successful quantum teleportation.
  arXiv  Detail & Related papers  (2025-02-24T14:14:42Z)
• Continuous variable quantum teleportation using photon subtracted and photon added two mode squeezed coherent state [4.513878172564012]
  We consider non-Gaussian states generated by photon subtraction (PS) and photon addition (PA) on two-mode squeezed coherent (TMSC) states as resource states for continuous variable (CV) quantum teleportation (QT) We compute the fidelity of QT for a broad range of states because we analytically derived the Wigner characteristic function for these family of states which we think will be useful for various other applications of these families of states.
  arXiv  Detail & Related papers  (2024-07-08T15:36:05Z)
• High-quality entangled photon source by symmetric beam displacement design [39.58317527488534]
  Entangled photon sources are pivotal in advancing quantum communication, computing and sensing. This work introduces a polarization-entangled photon source, leveraging type-0 spontaneous parametric down-conversion. We attained a maximal Bell inequality violation, with the average entanglement visibility exceeding 99%.
  arXiv  Detail & Related papers  (2024-07-04T10:29:47Z)
• Analyzing performance of $f$-deformed displaced Fock state in continuous-variable quantum teleportation [4.967939188540654]
  We investigate the success probability of the non-Gaussian resources for optimal performance of the ideal teleportation protocol. It is found that the nonlinear substitution leads to an enhancement in teleportation fidelity beyond the threshold limit. The entangled photon-subtracted displaced Fock state demonstrates maximum efficiency as a quantum channel for teleporting single-mode coherent and squeezed states.
  arXiv  Detail & Related papers  (2024-06-24T11:17:52Z)
• Regression of high dimensional angular momentum states of light [47.187609203210705]
  We present an approach to reconstruct input OAM states from measurements of the spatial intensity distributions they produce. We showcase our approach in a real photonic setup, generating up-to-four-dimensional OAM states through a quantum walk dynamics.
  arXiv  Detail & Related papers  (2022-06-20T16:16:48Z)
• Consideration of success probability and performance optimization in non-Gaussian continuous variable quantum teleportation [2.380269892761954]
  We study the trade-off between teleportation fidelity and success probability for optimal performance of the teleportation protocol. We use Wigner characteristic function describing three non-Gaussian states, photon subtracted, photon added, and photon catalyzed two-mode squeezed vacuum states.
  arXiv  Detail & Related papers  (2022-06-13T17:54:57Z)
• Feedback-induced instabilities and dynamics in the Jaynes-Cummings model [62.997667081978825]
  We investigate the coherence and steady-state properties of the Jaynes-Cummings model subjected to time-delayed coherent feedback. The introduced feedback qualitatively modifies the dynamical response and steady-state quantum properties of the system.
  arXiv  Detail & Related papers  (2020-06-20T10:07:01Z)

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.