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arxiv: 2604.25140 · v1 · submitted 2026-04-28 · 🪐 quant-ph

Parallel distributed quantum gates for dual-species quantum emitters

Zhihao Xie , Adam Miranowicz , Zhenhua Li , Tao Li , Franco Nori This is my paper

Pith reviewed 2026-05-07 16:51 UTC · model grok-4.3

classification 🪐 quant-ph
keywords quantumdistributedgatesparallelqubitsseparatedspatiallycomputing
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The pith

A protocol enables parallel nonlocal gates on multiple dual-species qubit pairs via a single high-dimensional entangled photon pair acting as a frequency-distinct quantum bus.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

Quantum systems often need distant qubits to interact for larger computations. This work suggests connecting color-center qubits and superconducting qubits using pairs of entangled photons that have different frequencies. The photons act as a temporary link that carries quantum information between the separated devices. Because the frequencies are chosen to match each emitter type, no extra conversion hardware is required. The protocol also allows one pair of high-dimensional photons to handle multiple such connections at the same time. The design aims to keep the system always ready for use and to use fewer resources than previous methods for building quantum networks.

Core claim

We propose a parallel protocol for implementing distributed nonlocal quantum gates between spatially separated stationary qubits encoded in dual-species quantum emitters (i.e., color-center and superconducting qubits) by utilizing entangled photon pairs with distinct frequencies as a quantum data bus, while maintaining an always-ready and resource-efficient property.

Load-bearing premise

The protocol assumes that entangled photon pairs with distinct frequencies can be generated, transmitted, and interfaced with both color-center and superconducting emitters with sufficiently low loss and decoherence to preserve quantum coherence during gate operations.

Figures

Figures reproduced from arXiv: 2604.25140 by Adam Miranowicz, Franco Nori, Tao Li, Zhenhua Li, Zhihao Xie.

Figure 1
Figure 1. Figure 1: FIG. 1. (a) Schematic of the CPF gate based on a color view at source ↗
Figure 2
Figure 2. Figure 2: FIG. 2. Schematics of distributed CNOT gates on spatially separated dual-species qubits. The SiV view at source ↗
Figure 3
Figure 3. Figure 3: FIG. 3. Average fidelity view at source ↗
Figure 4
Figure 4. Figure 4: FIG. 4. (a) Average fidelity and efficiency of the distributed view at source ↗
Figure 5
Figure 5. Figure 5: FIG. 5. Schematic of the parallel distributed CNOT gate with two superconducting qubits s view at source ↗
Figure 6
Figure 6. Figure 6: FIG. 6. Schematic of the gate U view at source ↗
read the original abstract

We propose a parallel protocol for implementing distributed nonlocal quantum gates between spatially separated stationary qubits encoded in dual-species quantum emitters (i.e., color-center and superconducting qubits). By utilizing entangled photon pairs with distinct frequencies as a quantum data bus, our approach connects spatially separated devices without requiring quantum frequency conversion or preshared entanglement, while maintaining an always-ready and resource-efficient property for distributed quantum computing and networks. Furthermore, we demonstrate the feasibility of implementing parallel distributed nonlocal quantum gates on multiple pairs of spatially separated qubits using a single high-dimensional entangled photon pair, which directly benefits from the enhanced quantum capacity provided by optical qudit encoding. Our protocol establishes a scalable and practically implementable framework for distributed quantum networks, potentially enabling the development of future large-scale quantum computing architectures.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 2 minor

Summary. The manuscript proposes a parallel protocol for implementing distributed nonlocal quantum gates between spatially separated stationary qubits encoded in dual-species emitters (color-center and superconducting qubits). It uses entangled photon pairs with distinct frequencies (optical and microwave) as a quantum data bus, avoiding quantum frequency conversion and preshared entanglement while claiming an always-ready, resource-efficient architecture. The work further claims that a single high-dimensional entangled photon pair enables parallel gates on multiple qubit pairs, establishing a scalable framework for distributed quantum networks.

Significance. If the transmission and interfacing losses can be shown to permit high-fidelity operation, the protocol would provide a concrete route to hybrid quantum networks that directly couple dissimilar qubit technologies without intermediate conversion steps, potentially reducing overhead in modular quantum computing architectures.

major comments (2)
  1. [§III and §IV] §III (Protocol) and §IV (Feasibility): The central claim that the scheme is 'practically implementable' and 'resource-efficient' rests on the transmission of microwave-frequency photons (~5 GHz) to the superconducting qubits. No loss budget, attenuation calculation, or fidelity estimate is supplied for realistic distances; standard coaxial or free-space channels incur exponential loss that would destroy coherence for separations beyond a few meters. This directly undermines the 'always-ready' property and must be quantified or mitigated (e.g., via low-loss waveguides or source-side conversion) before feasibility can be asserted.
  2. [§IV] §IV (Parallel-gate demonstration): The assertion that one high-dimensional entangled pair suffices for multiple independent gates lacks an error model incorporating photon loss, mode mismatch, and detector inefficiency. Without such analysis or numerical simulation, the claimed enhancement in quantum capacity cannot be evaluated against the added complexity of qudit encoding.
minor comments (2)
  1. [§II] Notation for the two distinct frequencies and the high-dimensional encoding should be introduced with explicit symbols in the protocol section rather than only in the abstract.
  2. [Introduction] The manuscript would benefit from a short table comparing the proposed scheme to existing distributed-gate protocols that do employ frequency conversion or preshared entanglement.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the constructive and detailed report. We address each major comment point by point below. We agree that quantitative loss analysis and an error model are required to support the claims of practical implementability and enhanced capacity, and we will incorporate these elements in the revised manuscript.

read point-by-point responses

  1. Referee: [§III and §IV] §III (Protocol) and §IV (Feasibility): The central claim that the scheme is 'practically implementable' and 'resource-efficient' rests on the transmission of microwave-frequency photons (~5 GHz) to the superconducting qubits. No loss budget, attenuation calculation, or fidelity estimate is supplied for realistic distances; standard coaxial or free-space channels incur exponential loss that would destroy coherence for separations beyond a few meters. This directly undermines the 'always-ready' property and must be quantified or mitigated (e.g., via low-loss waveguides or source-side conversion) before feasibility can be asserted.

    Authors: We acknowledge that the absence of an explicit loss budget for the ~5 GHz microwave photons is a limitation in the current manuscript. The protocol description in §III and feasibility discussion in §IV assume transmission channels compatible with the dual-species architecture (e.g., cryogenic environments typical for superconducting qubits), but we did not provide numerical attenuation estimates or fidelity projections. In the revised version we will add a dedicated paragraph and simple calculation in §IV that quantifies attenuation for realistic cryogenic coaxial or waveguide links, identifies viable distances (typically meters within a dilution refrigerator or short-range network), and discusses mitigation via low-loss superconducting transmission lines. This will clarify the regime in which the always-ready property holds without overstating generality. revision: yes

  2. Referee: [§IV] §IV (Parallel-gate demonstration): The assertion that one high-dimensional entangled pair suffices for multiple independent gates lacks an error model incorporating photon loss, mode mismatch, and detector inefficiency. Without such analysis or numerical simulation, the claimed enhancement in quantum capacity cannot be evaluated against the added complexity of qudit encoding.

    Authors: We agree that a quantitative error model is necessary to substantiate the parallel-gate advantage. The demonstration in §IV relies on the higher-dimensional Hilbert space of the optical qudit to enable multiple independent gates from a single entangled pair, but we did not include loss, mismatch, or inefficiency terms. In the revision we will add an error analysis subsection (or appendix) that derives approximate fidelity expressions including these imperfections and provides numerical estimates for small numbers of parallel operations. This will allow direct comparison of net capacity gain versus the overhead of qudit encoding and control, thereby strengthening the scalability claim. revision: yes

Circularity Check

0 steps flagged

No circularity: proposal rests on standard quantum optics concepts

full rationale

The manuscript is a protocol proposal that invokes established quantum optics tools (entangled photon pairs of distinct frequencies as a data bus, dual-species emitters) without presenting equations, fitted parameters, or derivations that reduce to the inputs by construction. No self-citation chains, ansatzes smuggled via prior work, or uniqueness theorems are load-bearing in the abstract or described structure. The central claims remain independent of the paper's own outputs, satisfying the self-contained criterion for a score of 0.

Axiom & Free-Parameter Ledger

0 free parameters · 1 axioms · 0 invented entities

The proposal rests on domain-standard assumptions about photon-qubit coupling and entanglement preservation; no new free parameters or invented entities are introduced in the abstract.

axioms (1)
  • domain assumption Entangled photon pairs with distinct frequencies can function as a lossless quantum data bus between dual-species emitters without requiring frequency conversion.
    Invoked to enable direct interfacing of color-center and superconducting qubits.

pith-pipeline@v0.9.0 · 5427 in / 1097 out tokens · 37698 ms · 2026-05-07T16:51:03.763424+00:00 · methodology

discussion (0)

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Reference graph

Works this paper leans on

93 extracted references · 93 canonical work pages

  1. [1]

    Suppose now that the stationary qubitss 1 ands 2 are initialized in the normalized states|φ 1⟩=α 1 |↑A⟩+ β1 |↓A⟩and|φ 2⟩=α 2 |↑B⟩+β 2 |↓B⟩, within the ground branch|G i⟩[62]

    The subscriptsAandBdenote photons sent to nodesAandB, which are of frequencies around ω↑ A andω ↑ B of the transitions of the SiV− and GeV− color center, respectively. Suppose now that the stationary qubitss 1 ands 2 are initialized in the normalized states|φ 1⟩=α 1 |↑A⟩+ β1 |↓A⟩and|φ 2⟩=α 2 |↑B⟩+β 2 |↓B⟩, within the ground branch|G i⟩[62]. On arriving at...

    work page

  2. [2]

    Then photonAis directed to interact withs 1 and photon B is directed to interact withs 2, before and after which the Hadamard transformation [i.e.,|↑ B⟩ →(|↑ B⟩+|↓B⟩)/ √ 2 and|↓ B⟩ → (|↑B⟩ − |↓ B⟩)/ √ 2] is performed ons 2. The combined states of photonsAandBand qubitss 1 ands 2 evolves into |Φ1⟩= 1 2 α1 ˆX2| ↑ s1⟩|D⟩|H⟩+β 1 ˆX2| ↓ s1⟩|A⟩|H⟩ +α1 ˆI2| ↑ s1...

    work page 2023

  3. [3]

    The combined state of photonsAandBand the four stationary qubitss 1 −s 4 evolves into | ˜Ψ1⟩= 1√2η0 |HA⟩|HB⟩(r↑ Aα1| ↑ s1 ⟩+r ↓ Aβ1| ↓ s1 ⟩) +|V A⟩|HB⟩(α 1| ↑ s1 ⟩+β 1| ↓ s1 ⟩) R+ 2 | ↑ s2 ⟩ +R − 2 | ↓ s2 ⟩ −2 |HA⟩|VB⟩(r↑ Aα1| ↑ s1 ⟩ +r ↓ Aβ1| ↓ s1 ⟩))− |V A⟩|VB⟩(α1| ↑ s1 ⟩+β 1| ↓ s1 ⟩) ⊗(α 2| ↑ s2 ⟩+β 2| ↓ s2 ⟩) ,(A4) where the normalized coefficient isη...

    work page

  4. [4]

    Two SiV − qubits embedded in CPF gates in node B are initialized as|ϕ s2 ⟩= (α 2 |↑s2 ⟩+ β2 |↓s2 ⟩)/ √ 2 and|ϕ s4 ⟩= (α 4 |↑s4 ⟩+β 4 |↓s4 ⟩)/ √

    work page

  5. [5]

    ˆXp flips the polarization of photon B, and ˆTA(i) [ ˆTB(i)] introduces a time delay for photon A (B)

    An auxiliary entangled-photon source generates a pair of hybrid entangled photons in the state |ϕp⟩= 1 2 1X i=0 ˆTA(i) ˆTB(i) + ˆTA(i+ 2) ˆTB(i) ˆXp |1A⟩|HB⟩, (D2) where photon A (B) is in the microwave (optical) regime and nearly resonant with the SC qubit (SiV−) transition. ˆXp flips the polarization of photon B, and ˆTA(i) [ ˆTB(i)] introduces a time d...

    work page

  6. [6]

    T. D. Ladd, F. Jelezko, R. Laflamme, Y. Nakamura, C. Monroe, and J. L. O’Brien,Quantum computers, Nature (London)464, 45 (2010)

    work page 2010

  7. [7]

    I. M. Georgescu, S. Ashhab, and F. Nori,Quantum simulation, Rev. Mod. Phys.86, 153 (2014)

    work page 2014

  8. [8]

    Long,Grover algorithm with zero theoretical failure rate, Phys

    G.-L. Long,Grover algorithm with zero theoretical failure rate, Phys. Rev. A64, 022307 (2001)

    work page 2001

  9. [9]

    Y. Zhou, E. M. Stoudenmire, and X. Waintal,What limits the simulation of quantum computers?, Phys. Rev. X10, 041038 (2020)

    work page 2020

  10. [10]

    Arute, K

    F. Arute, K. Arya, R. Babbush,et al.,Quantum supremacy using a programmable superconducting proces- sor, Nature (London)574, 505 (2019)

    work page 2019

  11. [11]

    Zhong, H

    H.-S. Zhong, H. Wang, Y.-H. Deng,et al.,Quantum computational advantage using photons, Science370, 1460 (2020)

    work page 2020

  12. [12]

    L. S. Madsen, F. Laudenbach, M. F. Askarani,et al., Quantum computational advantage with a programmable photonic processor, Nature (London)606, 75 (2022)

    work page 2022

  13. [13]

    S. Wei, Y. Chen, Z. Zhou, and G.-L. Long,A quantum convolutional neural network on NISQ devices, AAPPS Bull.32, 2 (2022)

    work page 2022

  14. [14]

    Cheng, X.-H

    B. Cheng, X.-H. Deng, X. Gu,et al.,Noisy intermediate- scale quantum computers, Front. Phys.18, 21308 (2023)

    work page 2023

  15. [15]

    J. I. Cirac, A. K. Ekert, S. F. Huelga, and C. Mac- chiavello,Distributed quantum computation over noisy channels, Phys. Rev. A59, 4249 (1999)

    work page 1999

  16. [16]

    Nemoto, M

    K. Nemoto, M. Trupke, S. J. Devitt, A. M. Stephens, B. Scharfenberger, K. Buczak, T. N¨ obauer, M. S. Everitt, J. Schmiedmayer, and W. J. Munro,Photonic architecture for scalable quantum information processing in diamond, Phys. Rev. X4, 031022 (2014)

    work page 2014

  17. [17]

    Reiserer and G

    A. Reiserer and G. Rempe,Cavity-based quantum networks with single atoms and optical photons, Rev. Mod. Phys.87, 1379 (2015)

    work page 2015

  18. [18]

    Sheng and L

    Y.-B. Sheng and L. Zhou,Blind quantum computation with a noise channel, Phys. Rev. A98, 052343 (2018)

    work page 2018

  19. [19]

    Y. L. Lim, A. Beige, and L. C. Kwek,Repeat-until-success linear optics distributed quantum computing, Phys. Rev. Lett.95, 030505 (2005)

    work page 2005

  20. [20]

    Jiang, J

    L. Jiang, J. M. Taylor, A. S. Sørensen, and M. D. Lukin,Distributed quantum computation based on small quantum registers, Phys. Rev. A76, 062323 (2007)

    work page 2007

  21. [21]

    Zheng, C.-P

    S.-B. Zheng, C.-P. Yang, and F. Nori,Arbitrary control 13 of coherent dynamics for distant qubits in a quantum network, Phys. Rev. A82, 042327 (2010)

    work page 2010

  22. [22]

    Wehner, D

    S. Wehner, D. Elkouss, and R. Hanson,Quantum internet: A vision for the road ahead, Science362, eaam9288 (2018)

    work page 2018

  23. [23]

    L.-M. Duan, B. Wang, and H. J. Kimble,Robust quantum gates on neutral atoms with cavity-assisted photon scattering, Phys. Rev. A72, 032333 (2005)

    work page 2005

  24. [24]

    Lin, Z.-W

    X.-M. Lin, Z.-W. Zhou, M.-Y. Ye, Y.-F. Xiao, and G.-C. Guo,One-step implementation of a multiqubit controlled- phase-flip gate, Phys. Rev. A73, 012323 (2006)

    work page 2006

  25. [25]

    C. Y. Hu, A. Young, J. L. O’Brien, W. J. Munro, and J. G. Rarity,Giant optical faraday rotation induced by a single-electron spin in a quantum dot: Applications to entangling remote spins via a single photon, Phys. Rev. B78, 085307 (2008)

    work page 2008

  26. [26]

    Cohen and K

    I. Cohen and K. Mølmer,Deterministic quantum network for distributed entanglement and quantum computation, Phys. Rev. A98, 030302(R) (2018)

    work page 2018

  27. [27]

    Daiss, S

    S. Daiss, S. Langenfeld, S. Welte, E. Distante, P. Thomas, L. Hartung, O. Morin, and G. Rempe,A quantum-logic gate between distant quantum-network modules, Science 371, 614 (2021)

    work page 2021

  28. [28]

    Vittorini, D

    G. Vittorini, D. Hucul, I. V. Inlek, C. Crocker, and C. Monroe,Entanglement of distinguishable quantum memories, Phys. Rev. A90, 040302(R) (2014)

    work page 2014

  29. [29]

    Stockill, M

    R. Stockill, M. J. Stanley, L. Huthmacher, E. Clarke, M. Hugues, A. J. Miller, C. Matthiesen, C. Le Gall, and M. Atat¨ ure,Phase-tuned entangled state generation between distant spin qubits, Phys. Rev. Lett.119, 010503 (2017)

    work page 2017

  30. [30]

    A. M. Dibos, M. Raha, C. M. Phenicie, and J. D. Thompson,Atomic source of single photons in the telecom band, Phys. Rev. Lett.120, 243601 (2018)

    work page 2018

  31. [31]

    L. Zhai, G. N. Nguyen, C. Spinnler, J. Ritzmann, M. C. L¨ obl, A. D. Wieck, A. Ludwig, A. Javadi, and R. J. Warburton,Quantum interference of identical photons from remote GaAs quantum dots, Nat. Nanotechnol.17, 829 (2022)

    work page 2022

  32. [32]

    van Leent, M

    T. van Leent, M. Bock, R. Garthoff, K. Redeker, W. Zhang, T. Bauer, W. Rosenfeld, C. Becher, and H. Weinfurter,Long-distance distribution of atom-photon entanglement at telecom wavelength, Phys. Rev. Lett. 124, 010510 (2020)

    work page 2020

  33. [33]

    Y. Zhou, P. Malik, F. Fertig, M. Bock, T. Bauer, T. van Leent, W. Zhang, C. Becher, and H. Weinfurter,Long- lived quantum memory enabling atom-photon entangle- ment over 101 km of telecom fiber, PRX Quantum5, 020307 (2024)

    work page 2024

  34. [34]

    C. M. Knaut, A. Suleymanzade, Y. C. Wei,et al., Entanglement of nanophotonic quantum memory nodes in a telecom network, Nature (London)629, 573 (2024)

    work page 2024

  35. [35]

    Gottesman and I

    D. Gottesman and I. L. Chuang,Demonstrating the viability of universal quantum computation using telepor- tation and single-qubit operations, Nature (London)402, 390 (1999)

    work page 1999

  36. [36]

    Sangouard, C

    N. Sangouard, C. Simon, H. de Riedmatten, and N. Gisin, Quantum repeaters based on atomic ensembles and linear optics, Rev. Mod. Phys.83, 33 (2011)

    work page 2011

  37. [37]

    Sheng, L

    Y.-B. Sheng, L. Zhou, and G.-L. Long,Hybrid entanglement purification for quantum repeaters, Phys. Rev. A88, 022302 (2013)

    work page 2013

  38. [38]

    Wang, S.-Y

    T.-J. Wang, S.-Y. Song, and G.-L. Long,Quantum repeater based on spatial entanglement of photons and quantum-dot spins in optical microcavities, Phys. Rev. A 85, 062311 (2012)

    work page 2012

  39. [39]

    W. J. Munro, K. Azuma, K. Tamaki, and K. Nemoto, Inside quantum repeaters, IEEE J. Sel. Top. Quantum Electron.21, 78 (2015)

    work page 2015

  40. [40]

    K. S. Chou, J. Z. Blumoff, C. S. Wang, P. C. Reinhold, C. J. Axline, Y. Y. Gao, L. Frunzio, M. H. Devoret, L. Jiang, and R. J. Schoelkopf,Deterministic teleportation of a quantum gate between two logical qubits, Nature (London)561, 368 (2018)

    work page 2018

  41. [41]

    Wanet al.,Quantum gate teleportation between separated qubits in a trapped-ion processor, Science364, 875 (2019)

    Y. Wanet al.,Quantum gate teleportation between separated qubits in a trapped-ion processor, Science364, 875 (2019)

    work page 2019

  42. [42]

    Qiuet al.,Deterministic quantum state and gate teleportation between distant superconducting chips, Sci

    J. Qiuet al.,Deterministic quantum state and gate teleportation between distant superconducting chips, Sci. Bull.70, 351 (2025)

    work page 2025

  43. [43]

    Liuet al.,Nonlocal photonic quantum gates over 7.0 km, Nat

    X. Liuet al.,Nonlocal photonic quantum gates over 7.0 km, Nat. Commun.15, 8529 (2024)

    work page 2024

  44. [44]

    Afzal, M

    F. Afzal, M. Akhlaghi, S. J. Beale,et al.,Distributed quantum computing in silicon, 2406.01704 (2024)

    work page arXiv 2024

  45. [45]

    L.-T. Feng, M. Zhang, D. Liu, Y.-J. Cheng, X.-Y. Song, Y.-Y. Ding, D.-X. Dai, G.-P. Guo, G.-C. Guo, and X.- F. Ren,Chip-to-chip quantum photonic controlled-NOT gate teleportation, Phys. Rev. Lett.135, 020802 (2025)

    work page 2025

  46. [46]

    D. Main, P. Drmota, D. P. Nadlinger, E. M. Ainley, A. Agrawal, B. C. Nichol, R. Srinivas, G. Araneda, and D. M. Lucas,Distributed quantum computing across an optical network link, Nature (London)638, 383 (2025)

    work page 2025

  47. [47]

    X. Liu, J. Hu, Z.-F. Li, X. Li, P.-Y. Li, P.-J. Liang, Z.-Q. Zhou, C.-F. Li, and G.-C. Guo,Heralded entanglement distribution between two absorptive quantum memories, Nature (London)594, 41 (2021)

    work page 2021

  48. [48]

    S. Barz, G. Cronenberg, A. Zeilinger, and P. Walther, Heralded generation of entangled photon pairs, Nat. Photonics4, 553 (2010)

    work page 2010

  49. [49]

    Usmani, C

    I. Usmani, C. Clausen, F. Bussieres, N. Sangouard, M. Afzelius, and N. Gisin,Heralded quantum entangle- ment between two crystals, Nat. Photonics6, 234 (2012)

    work page 2012

  50. [50]

    Hofmann, M

    J. Hofmann, M. Krug, N. Ortegel, L. G´ erard, M. Weber, W. Rosenfeld, and H. Weinfurter,Heralded entanglement between widely separated atoms, Science337, 72 (2012)

    work page 2012

  51. [51]

    Bernienet al.,Heralded entanglement between solid- state qubits separated by three metres, Nature (London) 497, 86 (2013)

    H. Bernienet al.,Heralded entanglement between solid- state qubits separated by three metres, Nature (London) 497, 86 (2013)

    work page 2013

  52. [52]

    Riedinger, A

    R. Riedinger, A. Wallucks, I. Marinkovi´ c, C. L¨ oschnauer, M. Aspelmeyer, S. Hong, and S. Gr¨ oblacher,Remote quantum entanglement between two micromechanical oscillators, Nature (London)556, 473 (2018)

    work page 2018

  53. [53]

    Wengerowsky, S

    S. Wengerowsky, S. K. Joshi, F. Steinlechner, H. H¨ ubel, and R. Ursin,An entanglement-based wavelength- multiplexed quantum communication network, Nature (London)564, 225 (2018)

    work page 2018

  54. [54]

    Yang, Q.-P

    C.-P. Yang, Q.-P. Su, and F. Nori,Entanglement generation with superconducting quantum interference devices coupled to a transmission line resonator, New J. Phys.15, 115003 (2013)

    work page 2013

  55. [55]

    H. Yan, S. Zhang, J. F. Chen, M. M. T. Loy, G. K. L. Wong, and S. Du,Generation of narrow-band hyperentangled nondegenerate paired photons, Phys. Rev. Lett.106, 033601 (2011)

    work page 2011

  56. [56]

    M.-X. Dong, W. Zhang, S. Shi, K. Wang, Z.-Y. Zhou, S.-L. Liu, D.-S. Ding, and B.-S. Shi,Two-color hyper- entangled photon pairs generation in a cold 85Rb atomic ensemble, Opt. Express25, 10145 (2017). 14

    work page 2017

  57. [57]

    X. Lu, Q. Li, D. A. Westly, G. Moille, A. Singh, V. Anant, and K. Srinivasan,Chip-integrated visible–telecom entan- gled photon pair source for quantum communication, Nat. Phys.15, 373 (2019)

    work page 2019

  58. [58]

    T.-M. Zhao, H. Zhang, J. Yang, Z.-R. Sang, X. Jiang, X.-H. Bao, and J.-W. Pan,Entangling different-color photons via time-resolved measurement and active feed forward, Phys. Rev. Lett.112, 103602 (2014)

    work page 2014

  59. [59]

    J. Yang, T. Fandrich, F. Benthin, R. Keil, N. L. Sharma, W. Nie, C. Hopfmann, O. G. Schmidt, M. Zopf, and F. Ding,Photoneutralization of charges in gaas quantum dot based entangled photon emitters, Phys. Rev. B105, 115301 (2022)

    work page 2022

  60. [60]

    Schimpf, M

    C. Schimpf, M. Reindl, F. Basso Basset, K. D. J¨ ons, R. Trotta, and A. Rastelli,Quantum dots as potential sources of strongly entangled photons: Perspectives and challenges for applications in quantum networks, Appl. Phys. Lett.118, 100502 (2021)

    work page 2021

  61. [61]

    H. K. C. Beukers, M. Pasini, H. Choi, D. Englund, R. Hanson, and J. Borregaard,Remote-entanglement protocols for stationary qubits with photonic interfaces, PRX Quantum5, 010202 (2024)

    work page 2024

  62. [62]

    Erhard, M

    M. Erhard, M. Krenn, and A. Zeilinger,Advances in high- dimensional quantum entanglement, Nat. Rev. Phys.2, 365 (2020)

    work page 2020

  63. [63]

    Deng, B.-C

    F.-G. Deng, B.-C. Ren, and X.-H. Li,Quantum hyperentanglement and its applications in quantum information processing, Sci. Bull.62, 46 (2017)

    work page 2017

  64. [64]

    Liu, H.-R

    W.-Q. Liu, H.-R. Wei, and L.-C. Kwek,Low-cost Fredkin gate with auxiliary space, Phys. Rev. Applied14, 054057 (2020)

    work page 2020

  65. [65]

    F.-F. Du, M. Ma, Z.-Y. Bai, and Q.-L. Tan,Generation of arbitrary high-dimensional qudit-based entangled states, Phys. Rev. A111, 032604 (2025)

    work page 2025

  66. [66]

    D. D. Awschalom, R. Hanson, J. Wrachtrup, and B. B. Zhou,Quantum technologies with optically interfaced solid-state spins, Nat. Photonics12, 516 (2018)

    work page 2018

  67. [67]

    C. T. Nguyenet al.,Quantum network nodes based on diamond qubits with an efficient nanophotonic interface, Phys. Rev. Lett.123, 183602 (2019)

    work page 2019

  68. [68]

    Zifkin, C

    R. Zifkin, C. D. Rodr´ ıguez Rosenblueth, E. Janitz, Y. Fontana, and L. Childress,Lifetime reduction of single germanium-vacancy centers in diamond via a tunable open microcavity, PRX Quantum5, 030308 (2024)

    work page 2024

  69. [69]

    H. Zhou, T. Li, and K. Xia,Parallel and heralded mul- tiqubit entanglement generation for quantum networks, Phys. Rev. A107, 022428 (2023)

    work page 2023

  70. [70]

    Zheng, H

    Y. Zheng, H. Sharma, and J. Borregaard,Entanglement distribution with minimal memory requirements using time-bin photonic qudits, PRX Quantum3, 040319 (2022)

    work page 2022

  71. [71]

    Bouchard, D

    F. Bouchard, D. England, P. J. Bustard, K. Heshami, and B. Sussman,Quantum communication with ultrafast time-bin qubits, PRX Quantum3, 010332 (2022)

    work page 2022

  72. [72]

    Borregaard, H

    J. Borregaard, H. Pichler, T. Schr¨ oder, M. D. Lukin, P. Lodahl, and A. S. Sørensen,One-way quantum repeater based on near-deterministic photon-emitter interfaces, Phys. Rev. X10, 021071 (2020)

    work page 2020

  73. [73]

    M. O. Scully and M. S. Zubairy,Quantum Optics (Cambridge University, Cambridge, 1997)

    work page 1997

  74. [74]

    D. S. Levonian, R. Riedinger, B. Machielse, E. N. Knall, M. K. Bhaskar, C. M. Knaut, R. Bekenstein, H. Park, M. Lonˇ car, and M. D. Lukin,Optical entanglement of distinguishable quantum emitters, Phys. Rev. Lett.128, 213602 (2022)

    work page 2022

  75. [75]

    D. D. Sukachev, A. Sipahigil, C. T. Nguyen, M. K. Bhaskar, R. E. Evans, F. Jelezko, and M. D. Lukin, Silicon-vacancy spin qubit in diamond: A quantum memory exceeding 10 ms with single-shot state readout, Phys. Rev. Lett.119, 223602 (2017)

    work page 2017

  76. [76]

    Senkalla, G

    K. Senkalla, G. Genov, M. H. Metsch, P. Siyushev, and F. Jelezko,Germanium vacancy in diamond quantum memory exceeding 20 ms, Phys. Rev. Lett.132, 026901 (2024)

    work page 2024

  77. [77]

    N. B. Lingaraju, H.-H. Lu, D. E. Leaird, S. Estrella, J. M. Lukens, and A. M. Weiner,Bell state analyzer for spectrally distinct photons, Optica9, 280 (2022)

    work page 2022

  78. [78]

    Wagenknecht, C.-M

    C. Wagenknecht, C.-M. Li, A. Reingruber, X.-H. Bao, A. Goebel, Y.-A. Chen, Q. Zhang, K. Chen, and J.-W. Pan,Experimental demonstration of a heralded entanglement source, Nat. Photonics4, 549 (2010)

    work page 2010

  79. [79]

    P.-S. Yan, L. Zhou, W. Zhong, and Y.-B. Sheng, Advances in quantum entanglement purification, Sci. China Phys. Mech. Astron.66, 250301 (2023)

    work page 2023

  80. [80]

    R. Uppu, L. Midolo, X. Zhou, J. Carolan, and P. Lo- dahl,Quantum-dot-based deterministic photon–emitter interfaces for scalable photonic quantum technology, Nat. Nanotechnol.16, 1308 (2021)

    work page 2021

Showing first 80 references.