High-fidelity quantum teleportation through noisy channels via weak measurement and environment-assisted measurement

• URL: http://arxiv.org/abs/2206.14463v2
• Date: Tue, 11 Apr 2023 05:51:55 GMT
• Title: High-fidelity quantum teleportation through noisy channels via weak measurement and environment-assisted measurement
• Authors: Sajede Harraz, Jiao-Yang Zhang and Shuang Cong
• Abstract summary: A perfect teleportation protocol requires pure maximally shared entangled states. While in reality the shared entanglement is severely degraded due to the inevitable interaction with the noisy environment. We propose a teleportation protocol to teleport an unknown qubit through the amplitude damping channels with a fidelity up to one with a single copy of the entangled state.
• Score: 0.8594140167290097
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: A perfect teleportation protocol requires pure maximally shared entangled states. While in reality the shared entanglement is severely degraded due to the inevitable interaction with the noisy environment, which leads to mixed entangled state and extremely deteriorates the performance of teleportation. Here, we propose a teleportation protocol to teleport an unknown qubit through the amplitude damping channels with a fidelity up to one with a single copy of the entangled state. Our proposed teleportation protocol, while illustrated using the Bell and W entangled states as examples, can be utilized with any type of entangled states. In our protocol we employ environment-assisted measurement during the entanglement distribution, and further modify the original teleportation protocol by applying weak measurement in the last step of teleportation. We find a balance between teleportation fidelity and success probability by varying the strength of the weak measurement. Furthermore, we investigate the protection of controlled teleportation protocols, where all the qubits of the entangled state pass through the amplitude damping channel. In particular, for the controlled teleportation with the W state, the decoherence of the shared entanglement can be totally suppressed by using EAM, hence no weak measurement is required to achieve an average teleportation fidelity of unity. The numerical simulation results reveal that our proposed teleportation protocol outperforms both the weak measurement based probabilistic teleportation protocol and the original teleportation protocol without protection.

Related papers

• Quantum state transfer between superconducting cavities via exchange-free interactions [20.561557006177914]
  We propose and experimentally demonstrate a novel protocol for transferring quantum states between superconducting cavities. This approach resembles quantum teleportation, where quantum information is transferred between different nodes without directly transmitting carrier photons. We experimentally realize coherent and bidirectional transfer of arbitrary quantum states, including bosonic quantum error correction codes.
  arXiv  Detail & Related papers  (2024-08-26T07:57:39Z)
• Environment-induced Transitions in Many-body Quantum Teleportation [19.646332825082478]
  We study many-body quantum teleportation in the presence of environments. In the quantum regime, teleportation can outperform its classical counterparts, while in the classical regime, it can be replaced by a classical channel.
  arXiv  Detail & Related papers  (2024-06-04T12:51:23Z)
• Investigating controlled teleportation capability of quantum states with respect to $k$-separability [1.480302324573709]
  We examine teleportation fidelity in two-party standard teleportation schemes. For separable states, their teleportation fidelities cannot exceed the threshold. We extend this analysis to multi-party scenarios known as controlled teleportation.
  arXiv  Detail & Related papers  (2024-06-04T08:53:13Z)
• Robust teleportation of a surface code and cascade of topological quantum phase transitions [12.446931518819875]
  We investigate a protocol for teleporting a long-range entangled surface code state using elementary Bell measurements. We find infinitesimally weak entanglement is sufficient in teleporting a self-dual topological surface code. Our protocol, which can be readily implemented in dynamically Rydberg atom arrays, gives guidance for a practical demonstration of the power of quantum measurements.
  arXiv  Detail & Related papers  (2024-03-07T18:59:56Z)
• The effect of noisy environment on Secure Quantum Teleportation of uni-modal Gaussian states [0.0]
  Quantum communication networks can be built on quantum teleportation. We use a continuous variable two-mode squeezed vacuum state as a resource state for the quantum teleportation. We show that the temperature, dissipation rate and squeezing parameter of the squeezed thermal reservoir limit the feasible duration for secure quantum teleportation.
  arXiv  Detail & Related papers  (2023-09-04T17:35:55Z)
• Entangling metropolitan-distance separated quantum memories [22.27673691110657]
  A prototype is a network of quantum memories that are entangled and well separated. We create atom-photon entanglement in one node and send the photon to a second node for storage. The final memory-memory entanglement is verified to have a fidelity of 90% via retrieving to photons.
  arXiv  Detail & Related papers  (2022-01-28T06:25:24Z)
• Transfer and teleportation of system-environment entanglement [0.0]
  We study bidirectional teleportation while explicitly taking into account an environment. We find that when teleportation is performed in one direction it is accompanied by a transfer of correlations into the post-teleportation state of qubit $C$. In the other direction, if no new decoherence process occurs, we find that not only the state of the qubit but also its correlations with an environment are being teleported with unit Fidelity.
  arXiv  Detail & Related papers  (2021-07-02T08:20:55Z)
• Optimal teleportation fidelity and its deviation in noisy scenarios [0.0]
  We study the combined effects of noisy resource state and noisy classical communication on teleportation fidelity and its deviation. We find conditions for non-classical fidelity and dispersion-free teleportation within the present protocol.
  arXiv  Detail & Related papers  (2021-02-01T17:55:05Z)
• Direct Quantum Communications in the Presence of Realistic Noisy Entanglement [69.25543534545538]
  We propose a novel quantum communication scheme relying on realistic noisy pre-shared entanglement. Our performance analysis shows that the proposed scheme offers competitive QBER, yield, and goodput.
  arXiv  Detail & Related papers  (2020-12-22T13:06:12Z)
• Teleporting quantum information encoded in fermionic modes [62.997667081978825]
  We consider teleportation of quantum information encoded in modes of a fermionic field. In particular, one is forced to distinguish between single-mode entanglement swapping, and qubit teleportation with or without authentication.
  arXiv  Detail & Related papers  (2020-02-19T14:15:16Z)
• Rating the performance of noisy teleportation using fluctuations in fidelity [0.0]
  We analyze the performance of teleportation in terms of both fidelity and the deviation in fidelity. We compute the teleportability score in the noiseless scenario and find that it increases monotonically with the entanglement content of the resource state. In the presence of global depolarizing noise, for low entangled resource states and high sensitivity requirements, the noisy states can have better a teleportability score.
  arXiv  Detail & Related papers  (2020-01-30T17:18:49Z)

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.