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GCRI · التقنيات الكمية

الكم والمواد

Quantum technologies depend on materials, from superconducting circuits and semiconductor spin qubits to photonic chips and isotopically pure crystals. In turn, quantum simulation may one day help design new materials and molecules. This page sets out how materials limit quantum devices, how quantum methods could aid materials science, and what evidence serves the researchers and funders working at this intersection.

01لوحة العرض

كيف يسير العمل.

النظم · حول هذا الموضوعتوضيحي

Quantum testbed

Quantum and materials · Testbed lab · Device QD-77

Calibration cycleGCRI · التقنيات الكمية

الكيوبتات

Q01421160.02In spec
Q183480.01In spec
Q269990.01Drifting
Q3142210.05Drifting
Q4162830.03Drifting

Device

Topology
heavy-hex, illustrative
2Q fidelity
0.989
الوصول
by committee
الوسم
مرصود
Quantum testbed: the screen’s structure, terms and states for Quantum and materials.أسماء مثالية وقيم توضيحية؛ تصميم وليس سجلًا ولا نظامًا حيًا.

الشكلQuantum testbed: example names and illustrative values, not a record or a live system.

02السؤال

Quantum and materials: how the risk develops.

Chemistry and materials simulation. The dossier below sets out how the risk develops, what is measured, where the data come from, how it is modelled and who decides.

الآلية

Defects cause decoherence

Impurities, surface defects and two-level النظم in materials interact with qubits and shorten coherence. Better materials and fabrication extend it.

الآلية

Fabrication sets yield

Producing many identical qubits needs precise fabrication. Variability between devices, even from one wafer, limits how far systems can scale.

الآلية

Some inputs are scarce

Helium-3 for dilution refrigerators, isotopically enriched silicon and specialised lasers have limited suppliers, creating supply risks.

الآلية

Quantum simulation of matter

Simulating molecules and materials is a leading candidate use of quantum computers, though classical methods remain strong for most problems today.

03الأساليب والأدلة

How quantum and materials is modelled, measured and tested.

النموذج وافتراضاته وبياناته وعدم اليقين فيه، بالصورة التي يفحصها بها عالم أو مهندس. وتتبع البنى أساليب منشورة. والقيم المرسومة توضيحية، وليست نتائج.

نموذج النظام

The couplings between the systems in quantum and materials: signs of influence, a reinforcing and a balancing loop, and cross-links where stress jumps.

++−+التكنولوجيا الكميةالفضاء السيبرانيالمجتمعاتالاقتصاد⁨R⁩ معزِّزة⁨B⁩ موازِنة
Causal loop diagram from the page’s systems; signs show the direction of influence. Illustrative structure for a system dynamics or network model, not estimated couplings.
مبادئ FAIR التوجيهية · GO FAIR وFORCE11⁨W3C PROV⁩ · اتحاد الشبكة العالميةإرشادات بشأن المعالجة المتسقة لأوجه عدم اليقين · الهيئة الحكومية الدولية المعنية بتغير المناخبيانات CEOS الجاهزة للتحليل · لجنة سواتل رصد الأرض
04عبر المجالات

Quantum devices depend on materials with their own supply risks.

05المؤشرات الفرعية

ما الذي يُقاس، ومدى جودة قياسه.

يحمل كل مؤشر وحدته ووتيرته ونوع المصدر الذي يستند إليه ووسم الأدلة الذي ستحمله القيمة. ولا تُعرض أي قيم: فالبرنامج يقدّمها بموجب سلطته الخاصة.

المؤشرالوحدةوتيرة الإصدارنوع المصدرالوسم
Qubit coherence time by material platformmicrosecondsper publicationPeer-reviewed resultsمرصود
Device yield in fabricationpercent of functional qubitsper fabrication runFoundry and lab reportsمُبلَّغ عنه
Helium-3 supplylitres per yearسنويGovernment and industry reportsمُقدَّر
Quantum chemistry demonstrations with classical comparisonالعددلكل مراجعةLiterature reviewمُقدَّر
Specialised component supplierscount by componentلكل تقييمSupply chain studiesمُقدَّر
Materials databases used for qubit researchالعددلكل تقييمResearch surveysمُبلَّغ عنه
06المصادر

من أين تأتي الأدلة.

مجموعات بيانات عامة مسمّاة وسجلات مؤسسية، لكلٍّ منها فئة ترخيصها. ولا تُستخدم المصادر المتاحة بموجب اتفاق إلا وفق شروطها، ولا يُعاد نشرها أبدًا.

المصدرما يقدّمهفئة الترخيص
Peer-reviewed materials and device literatureCoherence and fabrication resultsLicence per article
Materials Project and other open materials databasesComputed materials propertiesمفتوح، CC BY 4.0
Government reports on helium-3 and critical inputsSupply and demand of scarce inputsPublic, terms per government
Quantum supply chain studiesComponent suppliers and dependenciesLicence per publication (to check)
Benchmark studies of quantum chemistry algorithmsComparisons with classical methodsLicence per publication
07القرارات

من يقرر، وما الذي تخدمه الأدلة.

Quantum Technologies prepares evidence. The decisions below are taken by the authorities named, under their own rules, and never by the platform.

من يقررالسؤالالأدلة التي تخدمها هذه الصفحة
ممولو البحوثWhich materials and fabrication research to supportBottleneck reviews
Industry and national مختبراتHow to secure specialised inputsSupply risk assessments
Chemistry and materials researchersWhere quantum simulation could help their workUse case assessments

المخرجات التي يُنتجها هذا الموضوع

  • Materials bottleneck reviews for qubit platforms
  • Supply risk assessments for specialised inputs
  • Assessments of quantum simulation use cases with classical baselines
  • Evidence notes for research funders
08الأسئلة الجوهرية

ما يسأل عنه الخبراء.

The question is whether quantum simulation will beat improving classical methods on problems that matter.

  • Which chemical and materials problems are genuinely hard for classical methods?
  • How large and how error-free must a quantum computer be to simulate them usefully?
  • Can near-term noisy devices provide any useful result, or is error correction required?
  • How will results be verified when classical methods cannot reproduce them?
  • Which industrial and scientific questions would change if simulation improved?
09الآليات

الآليات والمحرّكات.

The behaviour of molecules and materials depends on how electrons interact. For many النظم, classical approximations such as density functional theory work well. For strongly correlated systems, such as some catalysts, transition-metal complexes and high-temperature superconductors, the computational cost of exact classical simulation grows very rapidly with system size. A quantum computer represents quantum states natively and could, in principle, simulate such systems efficiently.

Resource estimates for industrially relevant problems suggest that large, error-corrected machines would be required. Meanwhile classical methods, including tensor networks and machine-learning approaches, keep improving and raising the bar. Quantum materials research also runs the other way: new materials are needed to build better qubits.

10المناهج والبيانات

كيف يُدرس، وأين تتوقف المناهج.

المنهج أو البياناتما يُظهرهالحدود
Classical computational chemistryAccurate results for many النظمCost grows quickly for strongly correlated electrons
Quantum algorithm resource estimationQubits and operations needed for target problemsHighly sensitive to algorithm and hardware assumptions
Small-scale quantum simulation experimentsProof of principle on simple moleculesNot yet beyond classical reach for useful problems
Experimental materials characterisationGround truth for validationExperiments are costly and not always available
12Where this page’s references

Where this page’s references lead.

الهيئات والوثائق التي تُقرأ هذه الصفحة في ضوئها. وتتغير الحالات والإصدارات؛ ويقود كل رابط إلى الهيئة المُصدِرة.

13أسئلة

أسئلة وأجوبة.

Why do materials matter for qubits?
Because defects and impurities in materials disturb qubits and shorten coherence, so better materials and fabrication directly improve device performance.
What is quantum simulation?
Using a controllable quantum system or quantum computer to model another quantum system, such as a molecule or material.
Are there supply risks for quantum technology?
Some inputs, such as helium-3 and certain lasers and isotopes, have few suppliers, which supply chain studies identify as risks.
Has a quantum computer already designed a new material or drug?
Not in a way that classical methods could not match. Current demonstrations are proofs of principle on small systems.
Why is chemistry a natural application?
Because molecules are quantum systems. Simulating quantum systems with quantum hardware avoids some of the exponential costs classical computers face.
Should organisations wait for quantum simulation?
That is their decision. Evidence suggests classical methods will remain the workhorse for most problems for some time, while research into quantum methods continues.
التقاريرساهم

ساهم بأدلة من هذه الصفحة.

التقارير is the Consortium’s quarterly publication. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work.

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