Nonclassical resource for continuous variable telecloning with non-Gaussian advantage
- URL: http://arxiv.org/abs/2312.13586v2
- Date: Tue, 2 Jul 2024 05:59:50 GMT
- Title: Nonclassical resource for continuous variable telecloning with non-Gaussian advantage
- Authors: Sudipta Das, Rivu Gupta, Himadri Shekhar Dhar, Aditi Sen De,
- Abstract summary: The telecloning protocol distributes quantum states from a single sender to multiple receivers via a shared entangled state.
We investigate the optimal telecloning fidelities obtained using both Gaussian and non-Gaussian shared resources.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The telecloning protocol distributes quantum states from a single sender to multiple receivers via a shared entangled state by exploiting the notions of teleportation and approximate cloning. We investigate the optimal telecloning fidelities obtained using both Gaussian and non-Gaussian shared resources. When the shared non-Gaussian state is created by subtracting photons from both the modes of the Gaussian two-mode squeezed vacuum state, we demonstrate that higher telecloning fidelities can be achieved in comparison with its Gaussian counterpart. To quantify this advantage, we introduce a quadrature-based nonclassicality measure, which is capable of estimating the fidelity of the clones, both with Gaussian and non-Gaussian resource states. We further provide a linear optical setup for asymmetric telecloning of continuous variable states using a multimode entangled state.
Related papers
- 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) - Seeding Gaussian boson samplers with single photons for enhanced state
generation [0.0]
Non-Gaussian quantum states are crucial to fault-tolerant quantum computation with continuous-variable systems.
We consider the addition of a non-Gaussian resource state, particularly single photons, to this configuration and show how it improves the qualities and generation probabilities of desired states.
arXiv Detail & Related papers (2023-11-06T19:00:00Z) - Matched entanglement witness criteria for continuous variables [11.480994804659908]
We use quantum entanglement witnesses derived from Gaussian operators to study the separable criteria of continuous variable states.
This opens a way for precise detection of non-Gaussian entanglement.
arXiv Detail & Related papers (2022-08-26T03:45:00Z) - 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) - Deterministic Gaussian conversion protocols for non-Gaussian single-mode
resources [58.720142291102135]
We show that cat and binomial states are approximately equivalent for finite energy, while this equivalence was previously known only in the infinite-energy limit.
We also consider the generation of cat states from photon-added and photon-subtracted squeezed states, improving over known schemes by introducing additional squeezing operations.
arXiv Detail & Related papers (2022-04-07T11:49:54Z) - Efficient simulation of Gottesman-Kitaev-Preskill states with Gaussian
circuits [68.8204255655161]
We study the classical simulatability of Gottesman-Kitaev-Preskill (GKP) states in combination with arbitrary displacements, a large set of symplectic operations and homodyne measurements.
For these types of circuits, neither continuous-variable theorems based on the non-negativity of quasi-probability distributions nor discrete-variable theorems can be employed to assess the simulatability.
arXiv Detail & Related papers (2022-03-21T17:57:02Z) - Lifting the Convex Conjugate in Lagrangian Relaxations: A Tractable
Approach for Continuous Markov Random Fields [53.31927549039624]
We show that a piecewise discretization preserves better contrast from existing discretization problems.
We apply this theory to the problem of matching two images.
arXiv Detail & Related papers (2021-07-13T12:31:06Z) - Dissipative evolution of quantum Gaussian states [68.8204255655161]
We derive a new model of dissipative time evolution based on unitary Lindblad operators.
As we demonstrate, the considered evolution proves useful both as a description for random scattering and as a tool in dissipator engineering.
arXiv Detail & Related papers (2021-05-26T16:03:34Z) - Local optimization on pure Gaussian state manifolds [63.76263875368856]
We exploit insights into the geometry of bosonic and fermionic Gaussian states to develop an efficient local optimization algorithm.
The method is based on notions of descent gradient attuned to the local geometry.
We use the presented methods to collect numerical and analytical evidence for the conjecture that Gaussian purifications are sufficient to compute the entanglement of purification of arbitrary mixed Gaussian states.
arXiv Detail & Related papers (2020-09-24T18:00:36Z) - Gaussian conversion protocols for cubic phase state generation [104.23865519192793]
Universal quantum computing with continuous variables requires non-Gaussian resources.
The cubic phase state is a non-Gaussian state whose experimental implementation has so far remained elusive.
We introduce two protocols that allow for the conversion of a non-Gaussian state to a cubic phase state.
arXiv Detail & Related papers (2020-07-07T09:19:49Z)
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.