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Distributed Quantum Computing in Silicon

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arxiv 2406.01704 v1 pith:AZAX3XBN submitted 2024-06-03 quant-ph

Distributed Quantum Computing in Silicon

classification quant-ph
keywords quantumdistributedcomputingmodulesentanglementsiliconcapabilitycentres
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Commercially impactful quantum algorithms such as quantum chemistry and Shor's algorithm require a number of qubits and gates far beyond the capacity of any existing quantum processor. Distributed architectures, which scale horizontally by networking modules, provide a route to commercial utility and will eventually surpass the capability of any single quantum computing module. Such processors consume remote entanglement distributed between modules to realize distributed quantum logic. Networked quantum computers will therefore require the capability to rapidly distribute high fidelity entanglement between modules. Here we present preliminary demonstrations of some key distributed quantum computing protocols on silicon T centres in isotopically-enriched silicon. We demonstrate the distribution of entanglement between modules and consume it to apply a teleported gate sequence, establishing a proof-of-concept for T centres as a distributed quantum computing and networking platform.

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Cited by 18 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Electrically-triggered spin-photon devices in silicon

    quant-ph 2025-01 unverdicted novelty 8.0

    First demonstration of electrically-injected single-photon emission from silicon T centres (g(2)(0)=0.05) and electrically-triggered spin initialization at 92% fidelity.

  2. Fault-tolerant distributed quantum computing with a single nucleus per node

    quant-ph 2026-07 accept novelty 7.0

    Biased photonic Bell pairs let Floquet codes run with one nucleus per node and stabilizer codes with two, purifying links by repeated syndrome measurement rather than distillation.

  3. Adversarial quantum teleportation

    quant-ph 2026-04 unverdicted novelty 7.0

    Adversarial models with cheating parties show that average-fidelity thresholds of 1/2 and 2/3 for quantum teleportation arise naturally from the type of adversary.

  4. Optically Resolved Excited State Hyperfine Structure of a Silicon Colour Centre in the Telecom Bands

    quant-ph 2026-07 conditional novelty 6.0

    The hyperfine structure of the excited 1s:3T2 state of the singly ionized interstitial aluminum donor in 28Si has been optically resolved, giving a contact hyperfine coupling of 2.75 µeV.

  5. Optical linewidth narrowing for device-coupled single T centers

    quant-ph 2026-07 conditional novelty 6.0

    Above-band optical excitation narrows device-coupled single T-center linewidths by up to 70% via free-carrier filling of charge traps, with dynamics captured by a rate-equation model.

  6. Bright Telecom Spin-Photon Interface in Silicon Photonics

    quant-ph 2026-07 conditional novelty 6.0

    Single Al1 centers in silicon emit telecom single photons with a 135 ns lifetime and an optically pumpable spin, demonstrated here for the first time.

  7. Epitaxial single T centres in silicon-on-insulator

    quant-ph 2026-07 conditional novelty 6.0

    Single T centres epitaxially grown in silicon-on-insulator via MBE achieve 30 MHz homogeneous linewidths coupled to nanophotonic waveguides, a ten-fold improvement over implanted references.

  8. Q-DICE: Quantum Distributed Interconnect Compiler and Emulator

    quant-ph 2026-06 unverdicted novelty 6.0

    Q-DICE provides a hardware-aware emulation environment for distributed quantum circuits using QPU slicing, stitching, and noise modeling with Kraus operators, validated to 4% fidelity on experimental data.

  9. PIQC: Scalable Distributed Quantum Computing via Photonic Integration of Designed Molecular Quantum Nodes

    quant-ph 2026-05 unverdicted novelty 6.0

    PIQC proposes a distributed FTQC architecture based on molecular quantum nodes with photonic integration, nuclear registers, loss-tolerant entanglement, and Floquetified qLDPC codes.

  10. Optical detection of the electron spin resonances of G centers in silicon

    quant-ph 2026-05 unverdicted novelty 6.0

    G centers in silicon show optically detectable spin resonances and coherent control, opening paths for silicon-based quantum devices.

  11. Spectral tuning of single T centres by the Stark effect

    quant-ph 2026-04 unverdicted novelty 6.0

    Stark tuning of T centres in silicon nanophotonic cavities with p-i-n diodes achieves 30 GHz shifts, resonance for 55% of on-chip emitters, tunable lifetime reduction, and a model predicting large entanglement-rate gains.

  12. Parallel distributed quantum gates for dual-species quantum emitters

    quant-ph 2026-04 unverdicted novelty 6.0

    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.

  13. Spectral stability of cavity-enhanced single-photon emitters in silicon

    quant-ph 2026-01 conditional novelty 6.0

    Fabry-Perot integration of erbium-doped silicon reduces spectral diffusion linewidth to 4.0(2) MHz and increases optical coherence time to 20(1) µs, a tenfold improvement over nanophotonic devices.

  14. Efficient and compact quantum network node based on a parabolic mirror on an optical chip

    quant-ph 2026-01 accept novelty 6.0

    A parabolic mirror on an optical chip forms a compact neutral-atom node that collects photons at 9% efficiency and generates atom-photon entanglement with 0.93 raw Bell fidelity.

  15. Architecting Distributed Quantum Computers: Design Insights from Resource Estimation

    quant-ph 2025-08 unverdicted novelty 6.0

    A resource estimation framework for distributed fault-tolerant quantum computers based on lattice surgery identifies feasible hardware configurations for eight applications across thousands of setups, showing that arc...

  16. A Metropolitan-scale Multiplexed Quantum Repeater with Bell Nonlocality

    quant-ph 2025-08 unverdicted novelty 6.0

    First metropolitan-scale quantum repeater achieving Bell nonlocality certification over 14.5 km using a new time-measurement multiplexed protocol with 78.6% fidelity.

  17. Practical blueprint for low-depth photonic quantum computing with quantum dots

    quant-ph 2025-07 unverdicted novelty 6.0

    Authors propose a low-optical-depth fusion-based photonic quantum computing architecture using quantum-dot emitters, adaptive repeat-until-success fusions, and time-bin qubits, with resource estimates and error-thresh...

  18. Single-photon emitters and spin-photon interfaces in silicon

    quant-ph 2026-03 accept novelty 1.0

    Silicon defects (T, G, W, C centers) and erbium are the leading single-photon emitters in silicon, but reaching the strong light–matter coupling (C≫1) required for quantum networks still needs a roughly 10–1000x reduc...