Heralded optical entanglement distribution via lossy quantum channels: A comparative study

• URL: http://arxiv.org/abs/2409.16622v1
• Date: Wed, 25 Sep 2024 05:08:21 GMT
• Title: Heralded optical entanglement distribution via lossy quantum channels: A comparative study
• Authors: Wan Zo, Seungbeom Chin, Yong-Su Kim,
• Abstract summary: Quantum entanglement serves as a foundational resource for various quantum technologies. This study suggests three heralded schemes that distribute multipartite Greenberger-Horne-Zeilinger (GHZ) states via lossy quantum channels. By comparing success probabilities and heralding efficiency, we find that each scheme has its own advantage according to the number of parties and the channel distance and the security requirement.
• Score: 0.4551615447454769
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum entanglement serves as a foundational resource for various quantum technologies. In optical systems, entanglement distribution rely on the indistinguishability and spatial overlap of photons. Heralded schemes play a crucial role in ensuring the reliability of entanglement generation by detecting ancillary photons to signal the creation of desired entangled states. However, photon losses in quantum channels remain a significant challenge, limiting the distance and capacity of entanglement distributions. This study suggests three heralded schemes that distribute multipartite Greenberger-Horne-Zeilinger (GHZ) states via lossy quantum channels. These schemes utilize different photon sources (Bell states or single-photons) and channel structures (centralized or decentralized heralding detectors). By comparing success probabilities and heralding efficiency, we find that each scheme has its own advantage according to the number of parties and the channel distance and the security requirement. This analysis provides insights into designing resilient heralded circuits for quantum information processing over lossy channels.

Related papers

• Entanglement of photonic modes from a continuously driven two-level system [34.50067763557076]
  We experimentally generate entangled photonic modes by continuously exciting a quantum emitter, a superconducting qubit, with a coherent drive. We show that entanglement is generated between modes extracted from the two sidebands of the resonance fluorescence spectrum. Our approach can be utilized to distribute entanglement at a high rate in various physical platforms.
  arXiv  Detail & Related papers  (2024-07-10T18:48:41Z)
• On-chip quantum interference between independent lithium niobate-on-insulator photon-pair sources [35.310629519009204]
  A lithium niobate-on-insulator (LNOI) integrated photonic circuit generates a two-photon path-entangled state, and a programmable interferometer for quantum interference. We generate entangled photons with $sim2.3times108$ pairs/s/mW brightness and perform quantum interference experiments on the chip with $96.8pm3.6%$ visibility. Our results provide a path towards large-scale integrated quantum photonics including efficient photon-pair generation and programmable circuits for applications such as boson sampling and quantum communications.
  arXiv  Detail & Related papers  (2024-04-12T10:24:43Z)
• Multiplexed quantum repeaters based on single-photon interference with mild stabilization [0.0]
  We present a quantum repeater scheme that leverages single-photon interference with reduced difficulty of phase stabilization. Under specific conditions, we demonstrate that our scheme achieves a higher entanglement distribution rate between end nodes compared to existing schemes.
  arXiv  Detail & Related papers  (2024-01-17T19:58:28Z)
• QUICK$^3$ -- Design of a satellite-based quantum light source for quantum communication and extended physical theory tests in space [73.86330563258117]
  Single photon source can enhance secure data rates in satellite-based quantum key distribution scenarios. payload is being integrated into a 3U CubeSat and scheduled for launch in 2024 into low Earth orbit.
  arXiv  Detail & Related papers  (2023-01-26T15:34:11Z)
• Protecting the quantum interference of cat states by phase-space compression [45.82374977939355]
  Cat states with their unique phase-space interference properties are ideal candidates for understanding quantum mechanics. They are highly susceptible to photon loss, which inevitably diminishes their quantum non-Gaussian features. Here, we protect these non-Gaussian features by compressing the phase-space distribution of a cat state.
  arXiv  Detail & Related papers  (2022-12-02T16:06:40Z)
• Coexistent quantum channel characterization using spectrally resolved Bayesian quantum process tomography [0.0]
  Coexistence of quantum and classical signals over same optical fiber is critical for operating quantum networks. We systematically characterize the quantum channel that results from simultaneously distributing approximate single-photon polarization-encoded qubits.
  arXiv  Detail & Related papers  (2022-08-30T19:57:45Z)
• Enhancing quantum cryptography with quantum dot single-photon sources [0.0]
  Quantum dot-based single-photon sources are remarkable candidates. We show that these sources provide additional security benefits, thanks to the tunability of coherence in the emitted photon-number states. We identify the optimal optical pumping scheme for the main quantum-cryptographic primitives.
  arXiv  Detail & Related papers  (2022-04-25T15:46:12Z)
• Statistical limits for quantum networks with semiconductor entangled photon sources [1.44854099261305]
  We explore the statistical limits for entanglement swapping with sources of polarization-entangled photons from the commonly used biexciton-exciton cascade. We stress the necessity of tuning the exciton fine structure, and explain why the often observed time evolution of photonic entanglement in quantum dots is not applicable for large quantum networks.
  arXiv  Detail & Related papers  (2021-09-14T14:57:50Z)
• Realizing quantum nodes in space for cost-effective, global quantum communication: in-orbit results and next steps [94.08853042978113]
  SpooQy-1 is a satellite developed at the Centre for Quantum Technologies. It has successfully demonstrated the operation of an entangled photon pair source on a resource-constrained CubeSat platform.
  arXiv  Detail & Related papers  (2021-04-22T02:59:23Z)
• On-Chip Multiphoton Entangled States by Path Identity [1.61694012177079]
  We propose an on-chip scheme to generate multi-photon polarization entangled states. The on-chip scheme can be implemented in existing integrated optical technology.
  arXiv  Detail & Related papers  (2020-04-08T01:41:15Z)
• Quantum teleportation with hybrid entangled resources prepared from heralded quantum states [68.8204255655161]
  We propose the generation of a hybrid entangled resource (HER) The work includes a discussion about the fidelity dependence on the geometrical properties of the medium through which the HER is generated. No spectral filtering is employed in the heralding process, which emphasizes the feasibility of this scheme without compromising photon flux.
  arXiv  Detail & Related papers  (2020-02-07T21:20:50Z)

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.