{"id":"aa0ceb8a-bb71-4b30-a4a4-a7d9719e0aac","arxiv_id":"2606.25080","paper_version":1,"verdict":"UNVERDICTED","confidence":"LOW","novelty_score":5.0,"correctness_risk":"unknown","formal_verification":"none","parameter_count":0,"one_line_summary":"A quantum primitive is outlined for output-hiding function sharing among parties with private inputs, achieved with quantum resources alone instead of classical keys or randomness.","lead":"The paper introduces a quantum primitive allowing multiple parties to compute a shared function of private inputs while keeping individual systems independent of those inputs and hiding outputs from external observers and some adversarial quantum processes, using only quantum resources. A smart generalist might read it to see a proposed alternative to classical keys for secure multi-party quantum tasks like coordination or key distribution.","discovery_kind":"new_method","skeptic_critique":{"model":"grok-4.3","headline":"No concrete protocol, state, or security argument is supplied to support the claimed independence and hiding properties.","rationale":"The reader's weakest_assumption correctly isolates the missing construction; the absence of any technical content in the provided text confirms that the claim remains untestable at present.","tokens_in":1681,"tokens_out":296,"duration_ms":12894,"concrete_test":"Extract the explicit quantum state preparation, measurement operators, and reduced-density-matrix expressions (if any) from the full manuscript; compute the partial trace over each party's subsystem and verify whether it is independent of the input bits for all input combinations.","verdict_should_be":"UNCHANGED","load_bearing_attack":"The central claim requires a quantum construction in which (i) parties learn one another's classical inputs, (ii) each party's local quantum system remains information-theoretically independent of those inputs, and (iii) the shared function value is hidden from external observers and from adversarial preparation/measurement, all without classical private keys or hidden randomness. The manuscript supplies only a high-level description of these desiderata and explicitly defers both the primitive's explicit realization and its applications to further publications. No Hilbert-space description, no measurement operators, no reduced-density-matrix calculation, and no security reduction appear. Without at least one such explicit object, the assertion that quantum resources alone suffice cannot be checked for internal consistency or for violation of no-cloning or information-disturbance bounds.","agreement_with_reader":"agree"},"referee_report":{"model":"grok-4.3","summary":"The manuscript introduces a quantum information-theoretic primitive for determining a discrete-valued function depending on multiple parties' local private inputs. Parties mutually learn each others' inputs and determine shared function values, while individual quantum systems remain independent of the inputs; the function values are shared among parties but information-theoretically hidden from external observers and from adversarial state-preparation or measurement processes. The construction is claimed to achieve these properties using quantum resources alone, without classical private keys or hidden randomness. General properties are outlined, but explicit realizations, security arguments, and applications (e.g., to QKD, multi-party coordination, function evaluation) are deferred to further publications.","tokens_in":1818,"tokens_out":478,"duration_ms":16071,"significance":"If a concrete, verifiable realization of the claimed primitive exists, it could enable new information-theoretically secure multi-party quantum protocols that avoid classical randomness, with potential impact on quantum cryptography and secure computation. However, the complete absence of any construction, Hilbert-space description, or security reduction in the manuscript prevents assessment of whether the result holds or offers genuine novelty beyond classical limitations.","major_comments":[{"comment":"Abstract (entire manuscript): The central claim asserts existence of a quantum primitive satisfying the listed independence and hiding properties, yet supplies no explicit construction, state, measurement operators, reduced-density-matrix calculation, or security reduction. All concrete content is deferred, so the assertion that 'quantum resources alone' suffice cannot be checked for internal consistency or violation of no-cloning/information-disturbance bounds.","section":"Abstract"},{"comment":"Abstract: The statement that classically such properties require private keys or hidden randomness, but are achieved here with quantum resources alone, is presented without any derivation, example protocol, or comparison that would allow verification of the claimed advantage.","section":"Abstract"}],"minor_comments":[{"comment":"The manuscript consists solely of a high-level outline and reads as an extended abstract rather than a complete paper; at minimum, an illustrative example or outline of the quantum state and operations would be needed for review.","section":null}],"recommendation":"reject","confidential_remarks":"This submission provides no verifiable technical content; it functions as an announcement of intended future work rather than a self-contained contribution."},"author_rebuttal":{"model":"grok-4.3","summary":"We thank the referee for their detailed review. The manuscript is structured as a high-level outline of the quantum primitive's general properties, with explicit constructions, security arguments, and applications explicitly deferred to subsequent publications as stated in the text. We respond to the major comments below.","responses":[{"response":"The manuscript deliberately presents the primitive at a conceptual level by defining its information-theoretic properties (input independence of individual systems, shared but hidden function values, and resistance to adversarial preparation/measurement) and contrasting them with classical requirements. We acknowledge that no explicit construction, Hilbert-space description, reduced-density-matrix calculations, or security reduction appears in this document; these are reserved for follow-up publications as noted in the manuscript. This format is chosen to introduce the overall framework first.","revision_made":"no","referee_comment":"[Abstract] Abstract (entire manuscript): The central claim asserts existence of a quantum primitive satisfying the listed independence and hiding properties, yet supplies no explicit construction, state, measurement operators, reduced-density-matrix calculation, or security reduction. All concrete content is deferred, so the assertion that 'quantum resources alone' suffice cannot be checked for internal consistency or violation of no-cloning/information-disturbance bounds."},{"response":"The classical requirement for private keys or hidden randomness to achieve information-theoretically secure shared function values is a standard result in secure multiparty computation. The proposed quantum primitive is asserted to realize the same properties solely via quantum resources through the stated independence and hiding features. A detailed derivation, protocol example, and explicit comparison are part of the deferred technical development.","revision_made":"no","referee_comment":"[Abstract] Abstract: The statement that classically such properties require private keys or hidden randomness, but are achieved here with quantum resources alone, is presented without any derivation, example protocol, or comparison that would allow verification of the claimed advantage."}],"tokens_in":1318,"tokens_out":448,"duration_ms":15597,"standing_objections":["Absence of explicit construction, Hilbert-space description, measurement operators, density-matrix calculations, or security reduction, which prevents verification of the central claims within the current manuscript."]},"desk_editor":{"model":"grok-4.3","letter":"The main takeaway is that the manuscript is only an abstract. It describes a primitive where parties use quantum resources to learn each other's classical inputs, compute a shared function value, and keep that value hidden from outsiders and from adversarial preparation or measurement, all without classical keys or hidden randomness. The text states that the parties' local systems remain independent of the inputs.\n\nNothing concrete appears. No Hilbert-space description, no measurement operators, no reduced-density-matrix calculation, and no security reduction are given. The abstract explicitly defers both the realization and the applications to later work.\n\nThe idea itself is stated clearly: quantum resources are claimed to replace the classical need for private keys while preserving information-theoretic hiding and local independence. If a working construction existed, it could matter for quantum multi-party computation and coordination protocols.\n\nThe problem is that the central claim cannot be checked. We have no way to see whether the required independence and hiding are consistent with no-cloning or information-disturbance bounds, or whether they reduce to something already known. The absence of any technical object means the soundness score is effectively zero.\n\nThis is for people tracking new quantum-crypto primitives who might want to watch for the follow-up paper. Right now there is nothing to read, cite, or discuss in a group. It does not deserve peer review until the actual protocol and arguments are supplied.","headline":"This is an abstract announcing a quantum primitive for output-hiding function sharing, but it contains no construction, states, measurements, or security argument.","tokens_in":2306,"tokens_out":353,"would_cite":false,"duration_ms":15751,"reading_group":"no","serious_thinker":"unclear","would_accept_peer_review":false},"rs_alignment":null,"lean_confirmation":null,"pith_extraction":{"msc":[],"pacs":[],"model":"grok-4.3","headline":"A quantum primitive lets parties share function values from private inputs while keeping outputs hidden without classical keys or randomness.","keywords":["quantum primitive","output-hiding function sharing","information-theoretic security","multi-party computation","quantum resources","secure quantum communication","function evaluation"],"falsifier":"An explicit protocol of quantum state preparations and measurements that realizes input-independent local systems and information-theoretically hidden outputs for at least one concrete multi-party function; any detectable leakage of input or output information in every attempted realization would falsify the claim.","tokens_in":2553,"feed_emoji":"🔐","tokens_out":673,"duration_ms":17903,"temperature":0.7,"pith_summary":"The paper introduces a quantum information-theoretic primitive allowing multiple parties to determine a discrete-valued function from their local private inputs. Parties mutually learn inputs and compute shared function values, yet each local quantum system remains independent of those inputs. The outputs stay information-theoretically hidden from external observers and from adversarial state preparation or measurement inside the system. This achieves the security properties using quantum resources alone, whereas classical constructions require private keys or hidden randomness. A sympathetic reader cares because the primitive targets secure quantum communication and computation tasks such as key distribution and multi-party coordination.","feed_headline":"Quantum primitive shares hidden function values without classical keys","feed_subtitle":"Parties learn private inputs and compute shared outputs while local systems stay input-independent and values remain hidden from outsiders.","key_machinery":"The quantum primitive for output-hiding function sharing, which encodes inputs into quantum states so that local systems stay input-independent while shared outputs remain hidden from external and adversarial quantum processes.","core_discovery":"A quantum information-theoretic primitive is introduced for determining a discrete-valued function that depends on multiple parties' local private inputs; the primitive permits the parties to mutually learn each others' local inputs and thereby determine function values while their individual systems remain independent of these inputs, with the resulting function values shared among the parties but remaining information-theoretically hidden from any external observer as well as from adversarial state-preparation or measurement processes within the quantum system, achieved using quantum resources alone.","pith_inferences":["If the primitive works for discrete functions it may extend to approximate versions of continuous functions by discretizing the input space.","The construction could serve as a modular component inside larger quantum network protocols that combine function sharing with entanglement distribution.","Testing the primitive on small numbers of parties with current photonic or ion-trap hardware would provide an early empirical check on the independence and hiding properties."],"forward_implications":["The primitive supplies a building block for quantum key distribution that avoids reliance on classical private keys.","It supports multi-party coordination and decision schemes in which function outputs remain hidden from external parties.","Function evaluation protocols can be constructed with information-theoretic output hiding against adversarial quantum operations.","In limited settings the same structure yields protocols for fairly generated private coins without classical randomness."],"fun_headline_variants":["Quantum primitive hides shared function values","Hidden function sharing with quantum primitive","Quantum resources hide shared function outputs","Output hiding for multi-party functions quantumly","Parties share hidden values using quantum alone"],"cache_read_input_tokens":64,"weakest_assumption_plain":"Quantum resources alone can produce systems in which parties learn inputs and share function values with each local system independent of the inputs and with outputs hidden information-theoretically from observers and adversaries.","fun_headline_variants_meta":{"raw":{"variants":["Quantum primitive hides shared function values","Hidden function sharing with quantum primitive","Quantum resources hide shared function outputs","Output hiding for multi-party functions quantumly","Parties share hidden values using quantum alone"]},"model":"grok-4.3","cost_usd":0.008104,"raw_usage":{"total_tokens":3658,"prompt_tokens":618,"num_sources_used":0,"completion_tokens":50,"cost_in_usd_ticks":81037000,"prompt_tokens_details":{"text_tokens":618,"audio_tokens":0,"image_tokens":0,"cached_tokens":256},"completion_tokens_details":{"audio_tokens":0,"reasoning_tokens":2990,"accepted_prediction_tokens":0,"rejected_prediction_tokens":0}},"tokens_in":618,"tokens_out":50,"duration_ms":23014,"temperature":1.0,"reasoning_tokens":2990,"cache_read_input_tokens":256,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-06-25T23:29:12.337914+00:00","model_set":{"reader":"grok-4.3"},"falsifier":"An explicit protocol of quantum state preparations and measurements that realizes input-independent local systems and information-theoretically hidden outputs for at least one concrete multi-party function; any detectable leakage of input or output information in every attempted realization would falsify the claim.","supporting_citations":[],"review_version":1}