{"id":"de0f6db9-b806-4777-a1da-5b068fecdf59","arxiv_id":"2606.19165","paper_version":1,"verdict":"UNVERDICTED","confidence":"LOW","novelty_score":6.0,"correctness_risk":"unknown","formal_verification":"none","parameter_count":0,"one_line_summary":"A patterned liquid-crystal spin-orbit device achieves 1.76 ms and 0.72 ms bidirectional electrical switching of optical skyrmions at ~403 Hz and demonstrates image encoding.","lead":"The paper reports a liquid-crystal device that electrically switches between optical skyrmion and non-skyrmion states in under 2 ms. If the performance holds, it offers a compact platform for refreshable topological optical signals in data transmission.","discovery_kind":"new_method","skeptic_critique":{"model":"grok-4.3","headline":"Reported 'electrical response' times may not directly evidence switching speed of the topological skyrmion state.","rationale":"The reader's weakest assumption correctly flags the skyrmion/non-skyrmion distinction under retardance tuning. The more precise load-bearing gap is the missing link between electrical LC dynamics and direct verification of topological-state dynamics at the claimed speed; this moves the verdict from UNVERDICTED to CONDITIONAL pending that specific check.","tokens_in":1730,"tokens_out":299,"duration_ms":41773,"concrete_test":"Re-analyze the experimental data or repeat the switching measurement with time-resolved full Stokes polarimetry (or equivalent skyrmion-number computation) synchronized to the voltage step; if the topological invariant transitions between distinct values within the reported bidirectional times, the claim holds.","verdict_should_be":"CONDITIONAL","load_bearing_attack":"The central claim requires that voltage-tuned retardance produces reversible skyrmion vs non-skyrmion states at the stated 1.76 ms / 0.72 ms timescales. The abstract (and likely results section) characterizes the measured times as electrical response of the LC device. If time-resolved polarization texture or skyrmion-number extraction (via Stokes parameters or equivalent) is absent during the transient, the optical topological switching rate remains unverified; the fixed PB phase imprint could in principle be preserved while the effective skyrmion texture fails to form or relax on the same electrical timescale.","agreement_with_reader":"partial"},"referee_report":{"model":"grok-4.3","summary":"The paper presents a liquid-crystal spin-orbit device that imprints a fixed Pancharatnam-Berry geometric phase via in-plane LC orientation while using applied voltage to tune retardance, enabling reversible electrical switching between optical skyrmion and non-skyrmion states. It reports bidirectional electrical response times of 1.76 ms and 0.72 ms (ideal cycling rate ~403 Hz), claims this as the fastest switchable optical skyrmion generator, and demonstrates an image encoding/decoding application for disturbance-resistant topological optical information transmission.","tokens_in":1855,"tokens_out":478,"duration_ms":14317,"significance":"If the topological skyrmion state is shown to switch reversibly at the reported millisecond timescales, the result would provide a compact, electrically addressable platform for high-speed refreshable skyrmion-based optical encoding. The approach leverages standard LC technology for dynamic control without requiring mechanical or static nanostructure changes, which could impact fields needing robust topological carriers.","major_comments":[{"comment":"Results/experimental characterization section: The bidirectional response times (1.76 ms and 0.72 ms) are characterized as electrical response of the LC device, but the manuscript provides no time-resolved polarization texture measurements (e.g., Stokes parameters or skyrmion number extraction) during the voltage transients. Without this, the central claim that the topological skyrmion state switches at these timescales remains unverified, as the fixed PB phase imprint could persist while the effective skyrmion texture fails to form or relax on the same schedule.","section":"Results/experimental characterization"},{"comment":"Abstract and results: The claim of being 'the fastest switchable optical skyrmion generator to date' at ~403 Hz requires explicit comparison data against prior devices (including their measured switching times and methods), which is not provided; the ideal cycling rate also assumes perfect reversibility without demonstrated error bars or cycle-to-cycle statistics.","section":"Abstract and results"}],"minor_comments":[{"comment":"The manuscript should include error bars on the reported response times and full device characterization (e.g., retardance vs. voltage curves) to support the switching claims.","section":null}],"recommendation":"major_revision","confidential_remarks":null},"author_rebuttal":{"model":"grok-4.3","summary":"We thank the referee for the constructive comments, which help clarify the presentation of our results. We address each major comment below.","responses":[{"response":"We agree that direct time-resolved verification of the polarization texture is necessary to confirm the skyrmion state switches on the reported electrical timescales. The response times were obtained from electrical retardance measurements of the LC layer. In the revised manuscript we will add time-resolved Stokes parameter maps and extracted skyrmion numbers acquired during the voltage transients to demonstrate that the topological texture forms and relaxes synchronously with the retardance change.","revision_made":"yes","referee_comment":"[Results/experimental characterization] Results/experimental characterization section: The bidirectional response times (1.76 ms and 0.72 ms) are characterized as electrical response of the LC device, but the manuscript provides no time-resolved polarization texture measurements (e.g., Stokes parameters or skyrmion number extraction) during the voltage transients. Without this, the central claim that the topological skyrmion state switches at these timescales remains unverified, as the fixed PB phase imprint could persist while the effective skyrmion texture fails to form or relax on the same schedule."},{"response":"We will insert a comparison table in the revised manuscript that lists previously reported switchable optical skyrmion generators together with their measured switching times and driving methods. We will also add error bars on the response-time data and cycle-to-cycle statistics over multiple switching periods to substantiate the ideal cycling rate.","revision_made":"yes","referee_comment":"[Abstract and results] Abstract and results: The claim of being 'the fastest switchable optical skyrmion generator to date' at ~403 Hz requires explicit comparison data against prior devices (including their measured switching times and methods), which is not provided; the ideal cycling rate also assumes perfect reversibility without demonstrated error bars or cycle-to-cycle statistics."}],"tokens_in":1401,"tokens_out":415,"duration_ms":27549,"standing_objections":[]},"desk_editor":{"model":"grok-4.3","letter":"The main thing to know is that this work builds a compact liquid-crystal device for electrically switching optical skyrmions at around 400 Hz, with a demonstration of image encoding. It extends static methods by making the topological state dynamic through voltage control of retardance on a fixed geometric phase pattern.\n\nThe new part is the specific architecture that combines the in-plane LC orientation for the Pancharatnam-Berry phase with rapid voltage tuning. The experimental results give concrete bidirectional response times of 1.76 ms and 0.72 ms and show the encoding application works. That is useful progress for the subfield.\n\nThe soft spot is in the timing claim. The measured times are the electrical response of the device. The abstract does not describe time-resolved polarization measurements or skyrmion number extraction during the switch. So the actual rate at which the topological texture changes remains unverified. The weakest assumption is that the retardance tuning directly produces reversible skyrmion states on the same timescale. If the paper has those measurements in the full text, that would strengthen it; otherwise the central performance figure is indirect.\n\nThis paper is for researchers in topological photonics looking for practical high-speed generators. It has enough concrete results to merit a serious referee, though the timing evidence would likely draw questions.\n\nI would send it to peer review.","headline":"The device gives fast electrical LC response times and an encoding demo, but the skyrmion state switching speed is not directly measured.","tokens_in":2416,"tokens_out":344,"would_cite":false,"duration_ms":26324,"reading_group":"maybe","serious_thinker":"yes","would_accept_peer_review":true},"rs_alignment":null,"lean_confirmation":null,"pith_extraction":{"msc":[],"pacs":[],"model":"grok-4.3","headline":"A liquid-crystal device switches optical skyrmions electrically in milliseconds.","keywords":["optical skyrmions","liquid crystal devices","Pancharatnam-Berry phase","topological optics","high-speed switching","optical encoding","spin-orbit devices"],"falsifier":"An observation that the polarization texture loses its skyrmion topology or fails to return to the prior state after repeated voltage cycles would falsify reversible high-speed switching.","tokens_in":2642,"feed_emoji":"⚡","tokens_out":603,"duration_ms":18010,"temperature":0.7,"pith_summary":"The paper presents a patterned liquid-crystal device that imprints a fixed Pancharatnam-Berry phase through in-plane orientation while using applied voltage to tune retardance. This combination allows reversible switching between skyrmion and non-skyrmion polarization textures. The measured bidirectional response times reach 1.76 ms and 0.72 ms, supporting an ideal cycling rate near 403 Hz. The work demonstrates image encoding and decoding to show utility for high-speed topological optical information transmission that resists disturbances.","feed_headline":"Liquid crystal device switches skyrmions at 403 Hz","feed_subtitle":"Voltage tunes retardance to toggle topological states bidirectionally in 1.76 ms and 0.72 ms for refreshable optical encoding.","key_machinery":"Voltage-tunable retardance in a spin-orbit liquid-crystal device that carries a fixed Pancharatnam-Berry phase imprint from the in-plane orientation pattern.","core_discovery":"The device employs the in-plane orientation of liquid crystals to imprint a fixed Pancharatnam-Berry geometric phase, while an applied voltage rapidly tunes the liquid-crystal retardance, enabling reversible switching between skyrmion and non-skyrmion states with millisecond response times.","pith_inferences":["Similar voltage control of retardance could be tested on other fixed phase patterns to generate different topological textures at comparable speeds.","Integration with standard liquid-crystal fabrication processes might allow compact arrays of such encoders for parallel optical channels.","The asymmetric rise and fall times suggest that driving waveforms could be optimized to approach the 403 Hz rate in practical encoding sequences."],"forward_implications":["The device achieves bidirectional electrical response times of 1.76 ms and 0.72 ms, corresponding to an ideal cycling rate of approximately 403 Hz.","The rapid topological refreshing enables demonstrated image encoding and decoding.","The platform supports high-speed, refreshable, and disturbance-resistant topological optical information transmission."],"fun_headline_variants":["Voltage tunes LC retardance for skyrmion switching","403 Hz switching in electrically driven LC skyrmion device","LC device toggles skyrmion states in 1.76 ms","Bidirectional ms response for LC skyrmion encoder"],"cache_read_input_tokens":2112,"weakest_assumption_plain":"Rapid voltage tuning of liquid-crystal retardance produces reversible, topologically distinct skyrmion versus non-skyrmion states while preserving the fixed Pancharatnam-Berry phase imprint from the in-plane orientation pattern.","fun_headline_variants_meta":{"raw":{"variants":["Voltage tunes LC retardance for skyrmion switching","403 Hz switching in electrically driven LC skyrmion device","LC device toggles skyrmion states in 1.76 ms","Bidirectional ms response for LC skyrmion encoder"]},"model":"grok-4.3","cost_usd":0.00621,"raw_usage":{"total_tokens":2907,"prompt_tokens":631,"num_sources_used":0,"completion_tokens":66,"cost_in_usd_ticks":62099500,"prompt_tokens_details":{"text_tokens":631,"audio_tokens":0,"image_tokens":0,"cached_tokens":256},"completion_tokens_details":{"audio_tokens":0,"reasoning_tokens":2210,"accepted_prediction_tokens":0,"rejected_prediction_tokens":0}},"tokens_in":631,"tokens_out":66,"duration_ms":10827,"temperature":1.0,"reasoning_tokens":2210,"cache_read_input_tokens":256,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-06-26T19:56:03.857966+00:00","model_set":{"reader":"grok-4.3"},"falsifier":"An observation that the polarization texture loses its skyrmion topology or fails to return to the prior state after repeated voltage cycles would falsify reversible high-speed switching.","supporting_citations":[],"review_version":1}