Performance optimization of continuous variable quantum teleportation with generalized photon-varying non-Gaussian operations

• URL: http://arxiv.org/abs/2402.02835v1
• Date: Mon, 5 Feb 2024 09:45:09 GMT
• Title: Performance optimization of continuous variable quantum teleportation with generalized photon-varying non-Gaussian operations
• Authors: Mingjian He, Shouyin Liu
• Abstract summary: We build a framework for photon-varying non-Gaussian operations for multi-mode states. We propose a performance metric suitable for arbitrary teleportation input states.
• Score: 0.5801621787540265
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Continuous variable quantum teleportation provides a path to the long-distance transmission of quantum states. Photon-varying non-Gaussian operations have been shown to improve the fidelity of quantum teleportation when integrated into the protocol. However, given a fixed non-Gaussian operation, the achievable fidelity varies with different input states. An operation that increases the fidelity for teleporting one class of states might do the contrary for other classes of states. A performance metric suitable for different input states is missing. For a given type of non-Gaussian operation, the achievable fidelity also varies with parameters associated with the operation. Previous work only focuses on particular settings of the parameters. Optimization over the parameters is also missing. In this work, we build a framework for photon-varying non-Gaussian operations for multi-mode states, upon which we propose a performance metric suitable for arbitrary teleportation input states. We then apply the new metric to evaluate different types of non-Gaussian operations. Starting from simple multi-photon photon subtraction and photon addition, we find that increasing the number of ancillary photons involved in the operation does not guarantee performance improvement. We then investigate combinations of the operations mentioned above, finding that operations that approximate a particular form provide the best improvement. The results provided here will be valuable for real-world implementations of quantum teleportation networks and applications that harness the non-Gaussianity of quantum states.

Related papers

• Scalable Optical Quantum State Synthesizer with Dual-Mode Cavity Memory [0.9051845653704739]
  We demonstrate a scalable method for generating optical non-Gaussian states using a cavity-based quantum memory operating in continuous time. We successfully generated Wigner-negative states, a key requirement for quantum error correction. This work also marks the first full demonstration of continuous-time cavity-based quantum memory.
  arXiv  Detail & Related papers  (2025-02-13T07:41:44Z)
• Unitary-transformed projective squeezing: applications for circuit-knitting and state-preparation of non-Gaussian states [0.15833270109954137]
  Continuous-variable (CV) quantum computing is a promising candidate for quantum computation. This work extends the projective squeezing method to establish a formalism for projecting quantum states onto the states that are unitary-transformed from the squeezed vacuum.
  arXiv  Detail & Related papers  (2024-11-29T06:53:47Z)
• 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)
• Implementing arbitrary multi-mode continuous-variable quantum gates with fixed non-Gaussian states and adaptive linear optics [0.0]
  Non-Gaussian quantum gates are essential components for optical quantum information processing. We propose a measurement-based method to directly implement general, multi-mode, and higher-order non-Gaussian gates.
  arXiv  Detail & Related papers  (2024-05-29T13:20:50Z)
• Quantum Generative Diffusion Model: A Fully Quantum-Mechanical Model for Generating Quantum State Ensemble [40.06696963935616]
  We introduce Quantum Generative Diffusion Model (QGDM) as their simple and elegant quantum counterpart. QGDM exhibits faster convergence than Quantum Generative Adversarial Network (QGAN) It can achieve 53.02% higher fidelity in mixed-state generation than QGAN.
  arXiv  Detail & Related papers  (2024-01-13T10:56:34Z)
• Variational waveguide QED simulators [58.720142291102135]
  Waveguide QED simulators are made by quantum emitters interacting with one-dimensional photonic band-gap materials. Here, we demonstrate how these interactions can be a resource to develop more efficient variational quantum algorithms.
  arXiv  Detail & Related papers  (2023-02-03T18:55:08Z)
• Experimental Multi-state Quantum Discrimination in the Frequency Domain with Quantum Dot Light [40.96261204117952]
  In this work, we present the experimental realization of a protocol employing a time-multiplexing strategy to optimally discriminate among eight non-orthogonal states. The experiment was built on a custom-designed bulk optics analyser setup and single photons generated by a nearly deterministic solid-state source. Our work paves the way for more complex applications and delivers a novel approach towards high-dimensional quantum encoding and decoding operations.
  arXiv  Detail & Related papers  (2022-09-17T12:59:09Z)
• 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)
• Dynamical learning of a photonics quantum-state engineering process [48.7576911714538]
  Experimentally engineering high-dimensional quantum states is a crucial task for several quantum information protocols. We implement an automated adaptive optimization protocol to engineer photonic Orbital Angular Momentum (OAM) states. This approach represents a powerful tool for automated optimizations of noisy experimental tasks for quantum information protocols and technologies.
  arXiv  Detail & Related papers  (2022-01-14T19:24:31Z)
• Robust preparation of Wigner-negative states with optimized SNAP-displacement sequences [41.42601188771239]
  We create non-classical states of light in three-dimensional microwave cavities. These states are useful for quantum computation. We show that this way of creating non-classical states is robust to fluctuations of the system parameters.
  arXiv  Detail & Related papers  (2021-11-15T18:20:38Z)

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.