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arxiv: 2605.10492 · v1 · submitted 2026-05-11 · 🪐 quant-ph · cond-mat.mes-hall· physics.optics

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Perspective on tailoring quantum coherence with electron beams

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Pith reviewed 2026-05-12 04:42 UTC · model grok-4.3

classification 🪐 quant-ph cond-mat.mes-hallphysics.optics
keywords quantum coherenceelectron beamssemiconductorsentanglementtwo-dimensional materialsquantum qubitsstrong coupling
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The pith

Electron beams in microscopes can probe and manipulate quantum coherence and entanglement in semiconductors and two-dimensional materials.

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

The paper argues that electron beams open a route to examine and control how semiconductor quantum qubits interact with their surroundings. This matters because better control of those interactions could support practical table-top quantum computing hardware. It reviews recent work showing that beams can deliver quantum-coherent probes of excitations and strong-coupling regimes in semiconductors and two-dimensional materials. The central perspective is that the same beams can be turned to tailor entanglement and correlations among quantum systems.

Core claim

Electron beams in electron microscopes have opened up a new avenue for the quantum-coherent probing of semiconductor excitations and strong-coupling effects, and they offer a route to manipulate the entanglement and correlations between quantum systems.

What carries the argument

Electron-beam probes inside electron microscopes, which interact with semiconductor quantum qubits to sustain coherence while reading out or altering excitations and entanglement.

If this is right

  • Table-top quantum computing hardware can exploit electron-microscope probes for qubit-environment control.
  • Strong-coupling effects between quantum systems become directly accessible through beam-induced coherence measurements.
  • Entanglement engineering in semiconductors and two-dimensional materials can proceed without relying solely on optical fields.
  • Correlations between multiple quantum emitters can be tuned by adjusting beam parameters such as energy and focus.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • Hybrid platforms that combine electron microscopy with existing semiconductor fabrication lines could emerge for on-chip quantum state preparation.
  • The approach might extend to other beam-based techniques, such as ion or photon beams, for cross-validation of coherence control.
  • Time-resolved beam scanning could map spatial variations in entanglement, offering a diagnostic tool for material defects that affect qubit performance.

Load-bearing premise

Electron-beam interactions can achieve and maintain quantum coherence and entanglement control in real semiconductor systems without rapid decoherence or damage dominating the process.

What would settle it

A controlled experiment that either demonstrates sustained entanglement manipulation via an electron beam or shows that decoherence and damage always destroy the coherence on the relevant timescale.

Figures

Figures reproduced from arXiv: 2605.10492 by Nahid Talebi.

Figure 1
Figure 1. Figure 1: (a) Ramsey interferometry by the sequential interaction of the EDPHS radiation (green pulse) and the moving electron with a single defect. (b) Ramsey interference fringes of the CL signal versus the photon energy and lateral wavenumber acquired at depicted delays between the EDPHS radiation and the electron beam [13]. 𝑘|| a b [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: (a) A scheme for merging shaped electron beams with two sequential optical pulses generated from EDPHS, for performing two-dimensional electronic spectroscopy of single solid-state qubits. (b) Generating entanglement between qubits via coherent interaction of an electron beam with a resonator combined with two qubits. ℏ𝜔 𝜏1 𝜏2 e - |𝑔ۧ |𝑒ۧ |𝑔ۧ |𝑒ۧ e - Resonator Qubit#1 Qubit#2 a b [PITH_FULL_IMAGE:figures/… view at source ↗
read the original abstract

Examining and controlling the interaction between semiconductor quantum qubits and their environment can boost semiconductor quantum technologies, which have many applications in table-top quantum computing hardware. Electron beams in electron microscopes have opened up a new avenue for the quantum-coherent probing of semiconductor excitations and strong-coupling effects. Here, I provide a brief overview of recent advancements in electron-beam probes for investigating quantum coherence in semiconductors and two-dimensional materials, complemented by my perspective on using electron beams to manipulate the entanglement and correlations between quantum systems.

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

1 major / 2 minor

Summary. The manuscript is a perspective article reviewing recent experimental advancements in using electron beams from electron microscopes to probe quantum coherence, excitations, and strong-coupling effects in semiconductors and two-dimensional materials. It then offers the author's forward-looking perspective on employing these interactions to manipulate entanglement and correlations between quantum systems, with the goal of advancing semiconductor-based quantum technologies.

Significance. If the proposed avenue proves viable, the perspective could help stimulate interdisciplinary research by highlighting electron-beam probes as a spatially resolved complement to optical and electrical methods for coherent control in quantum materials. The manuscript earns credit for synthesizing recent experimental work on electron-beam interactions with quantum systems, providing a concise overview that may guide future experiments. However, its significance is tempered by the absence of quantitative discussion on feasibility.

major comments (1)
  1. [Perspective on manipulation] The central perspective on using electron beams to manipulate entanglement and correlations (as stated in the abstract and developed in the forward-looking section) rests on the assumption that beam-sample interactions can support coherent, unitary evolution on relevant timescales. No estimates, Fermi-golden-rule calculations, or citations to measured decoherence rates (T2) or damage thresholds under typical microscope beam currents and energies are provided, leaving open whether phonon/plasmon excitation or defect creation would dominate before useful manipulation occurs.
minor comments (2)
  1. [Abstract] The abstract could more explicitly separate the review of existing advancements from the novel perspective on entanglement manipulation to improve readability for readers unfamiliar with the subfield.
  2. [Overview of advancements] A short table or bullet list summarizing the key cited experimental works (beam energies, materials, observed coherence signatures) would help readers quickly assess the current state of the art referenced in the overview.

Simulated Author's Rebuttal

1 responses · 0 unresolved

We thank the referee for their constructive review and for recognizing the manuscript's synthesis of recent experimental work on electron-beam probes. We agree that a more quantitative discussion of feasibility strengthens the forward-looking perspective on entanglement manipulation and have revised the manuscript to address this.

read point-by-point responses
  1. Referee: [Perspective on manipulation] The central perspective on using electron beams to manipulate entanglement and correlations (as stated in the abstract and developed in the forward-looking section) rests on the assumption that beam-sample interactions can support coherent, unitary evolution on relevant timescales. No estimates, Fermi-golden-rule calculations, or citations to measured decoherence rates (T2) or damage thresholds under typical microscope beam currents and energies are provided, leaving open whether phonon/plasmon excitation or defect creation would dominate before useful manipulation occurs.

    Authors: We acknowledge that the perspective assumes coherent interactions are possible on relevant timescales and that the original manuscript lacked quantitative support for this. As a forward-looking perspective rather than a detailed theoretical study, the focus was on highlighting potential rather than exhaustive modeling. To address the concern, we have added a paragraph in the forward-looking section providing order-of-magnitude estimates for coherent interaction windows under typical microscope conditions (beam currents ~1-100 pA, energies ~100 keV), citing measured T2 times in semiconductor quantum dots and 2D materials from the literature, and referencing studies on electron-beam-induced damage thresholds and inelastic scattering rates. While we do not include full Fermi-golden-rule calculations for specific protocols (as these are highly system- and geometry-dependent and would require dedicated follow-up work), the added discussion indicates that low-current regimes may allow a window for coherent effects before dominant phonon/plasmon or damage processes. This revision provides a more balanced assessment while preserving the perspective's intent. revision: yes

Circularity Check

0 steps flagged

No derivations or predictions present; perspective paper is self-contained with no circularity.

full rationale

This is a perspective paper providing an overview of recent advancements and forward-looking suggestions on using electron beams to probe and manipulate quantum coherence in semiconductors and 2D materials. The abstract and structure contain no equations, derivations, fitted parameters, predictions of new quantities, or load-bearing claims that reduce to self-citations or inputs by construction. All content is descriptive and referential to external prior work without re-deriving or renaming results internally. No steps qualify as circular under the enumerated patterns.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

No new mathematical models, free parameters, axioms, or invented entities are introduced; the paper is a non-technical perspective on experimental approaches.

pith-pipeline@v0.9.0 · 5366 in / 888 out tokens · 29755 ms · 2026-05-12T04:42:23.732539+00:00 · methodology

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Reference graph

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