Experimental quantum telecloning across silicon photonic chips

• URL: http://arxiv.org/abs/2608.11718v1
• Date: Wed, 12 Aug 2026 06:58:41 GMT
• Title: Experimental quantum telecloning across silicon photonic chips
• Abstract summary: We realize the optimal 1 to 2 symmetric quantum telecloning using a scalable silicon photonic platform.<n>We observe an interchip cloning fidelity of 78.45 $pm$ 1.39%, exceeding the classical limit of 2/3 by 8 standard deviations.
• Score: 5.282370082565621
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Telecloning -- the combination of quantum teleportation and cloning -- offers a powerful mechanism to disseminate unknown quantum states to multiple spatially separated recipients with optimal fidelity. Despite its conceptual importance for quantum networks, an experimental demonstration of symmetric qubit quantum telecloning remains elusive, particularly due to the challenges of generating multipartite entangled resource states and implementing stable multi-photon interference across distributed nodes. Here, we realize the optimal 1 to 2 symmetric quantum telecloning using a scalable silicon photonic platform. We implement a six-photon protocol using two independent, fiber-linked photonic chips: one generating a heralded input state and the other preparing a four-photon entangled resource state. By performing an interchip Bell-state measurement, we successfully distribute the input state into two optimal clones at remote nodes. We observe an interchip cloning fidelity of 78.45 $\pm$ 1.39%, exceeding the classical limit of 2/3 by 8 standard deviations. Our results demonstrate the robust generation and manipulation of complex multi-photon states between integrated chips, providing a foundational building block for large-scale multi-party quantum networks.

Related papers

• An entangled photon source for the telecom C-band based on a semiconductor-confined spin [0.07255608805275864]
  Multiphoton entangled states are a key resource for quantum networks and measurement-based quantum computation.<n>We take a key step towards the generation of telecom wavelength multi-qubit entangled states using an InAs/InP quantum dot.
  arXiv  Detail & Related papers  (2025-07-02T12:22:19Z)
• Optimized quantum entanglement network enabled by a state-multiplexing quantum light source [11.30646901300988]
  We propose an optimized scheme for the wavelength division multiplexing entanglement-based network using a state-multiplexing quantum light source.<n>A total secure key rate of 1946.9 bps is obtained by performing the BBM92 protocol with the distributed state.
  arXiv  Detail & Related papers  (2025-02-27T04:07:28Z)
• Multiplexed Entanglement of Multi-emitter Quantum Network Nodes [3.7291072604053306]
  Quantum networks that distribute entanglement among remote nodes will unlock transformational technologies in quantum computing, communication, and sensing.<n>Here we implement a two-node network consisting of several rare-earth ions coupled to nanophotonic cavities.<n>This is accomplished with a protocol that entangles distinguishable 171Yb ions through frequency-erasing photon detection combined with real-time quantum feedforward.
  arXiv  Detail & Related papers  (2024-02-25T23:55:29Z)
• Enhanced quantum state transfer: Circumventing quantum chaotic behavior [35.74056021340496]
  We show how to transfer few-particle quantum states in a two-dimensional quantum network. Our approach paves the way to short-distance quantum communication for connecting distributed quantum processors or registers.
  arXiv  Detail & Related papers  (2024-02-01T19:00:03Z)
• Simulation of Entanglement Generation between Absorptive Quantum Memories [56.24769206561207]
  We use the open-source Simulator of QUantum Network Communication (SeQUeNCe), developed by our team, to simulate entanglement generation between two atomic frequency comb (AFC) absorptive quantum memories. We realize the representation of photonic quantum states within truncated Fock spaces in SeQUeNCe. We observe varying fidelity with SPDC source mean photon number, and varying entanglement generation rate with both mean photon number and memory mode number.
  arXiv  Detail & Related papers  (2022-12-17T05:51:17Z)
• 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)
• Multiplexed telecom-band quantum networking with atom arrays in optical cavities [0.3499870393443268]
  We propose a platform for quantum processors comprising neutral atom arrays with telecom-band photons in a multiplexed network architecture. The use of a large atom array instead of a single atom mitigates the deleterious effects of two-way communication and improves the entanglement rate between two nodes by nearly two orders of magnitude.
  arXiv  Detail & Related papers  (2021-07-09T15:05:57Z)
• Multidimensional cluster states using a single spin-photon interface coupled strongly to an intrinsic nuclear register [48.7576911714538]
  Photonic cluster states are a powerful resource for measurement-based quantum computing and loss-tolerant quantum communication. We propose the generation of multi-dimensional lattice cluster states using a single, efficient spin-photon interface coupled strongly to a nuclear register.
  arXiv  Detail & Related papers  (2021-04-26T14:41:01Z)
• Telecom-heralded entanglement between remote multimode solid-state quantum memories [55.41644538483948]
  Future quantum networks will enable the distribution of entanglement between distant locations and allow applications in quantum communication, quantum sensing and distributed quantum computation. Here we report the demonstration of heralded entanglement between two spatially separated quantum nodes, where the entanglement is stored in multimode solid-state quantum memories. We also show that the generated entanglement is robust against loss in the heralding path, and demonstrate temporally multiplexed operation, with 62 temporal modes.
  arXiv  Detail & Related papers  (2021-01-13T14:31:54Z)
• Hybrid quantum photonics based on artificial atoms placed inside one hole of a photonic crystal cavity [47.187609203210705]
  Hybrid quantum photonics with SiV$-$-containing nanodiamonds inside one hole of a one-dimensional, free-standing, Si$_3$N$_4$-based photonic crystal cavity is presented. The resulting photon flux is increased by more than a factor of 14 as compared to free-space. Results mark an important step to realize quantum network nodes based on hybrid quantum photonics with SiV$-$- center in nanodiamonds.
  arXiv  Detail & Related papers  (2020-12-21T17:22:25Z)

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.