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Quantum computers use qubits that can be in superpositions and become entangled, which in principle lets some problems be solved far faster than on classical computers. Current machines are noisy and small, and useful fault-tolerant computing requires error correction that is only beginning to be demonstrated. This page sets out how quantum computers work and fail, how progress is measured honestly, and what evidence serves the institutions deciding how to engage.

01Sicil

Quantum computing on the record.

02Soru

Quantum computing: how the risk develops.

Hardware, algorithms and actual maturity. The dossier below sets out how the risk develops, what is measured, where the data come from, how it is modelled and who decides.

Mekanizma

Qubits are fragile

Qubits lose their quantum state through interaction with their environment. Gate errors and decoherence limit how long a computation can run before results become noise.

Mekanizma

Error correction needs overhead

Fault-tolerant computing encodes each logical qubit in many physical qubits and corrects errors continuously. It only helps once physical error rates fall below a threshold.

Mekanizma

Advantage is problem-specific

Quantum algorithms speed up particular problems, such as simulating quantum sistemleri or factoring. For many tasks classical computers remain as good or better.

Mekanizma

Claims need classical comparison

Demonstrations of quantum advantage are often followed by improved classical methods. Honest comparison requires the best classical approach, not a convenient one.

03İzleme

Quantum testbed.

Bir ekibin bu konuyu izlemek için kullanacağı ekran: ölçütleri, durumları ve kararları. Adlar örnektir ve değerler açıklayıcıdır.

Quantum testbed

Quantum computing · Testbed lab · Device QD-28

Calibration cycleGCRI · Kuantum Teknolojileri

Kübitler

Q0121490.03Drifting
Q1118240.03Drifting
Q294410.03Drifting
Q373930.05Drifting
Q450480.02Drifting

Device

Topology
heavy-hex, illustrative
2Q fidelity
0.994
Erişim
by committee
Etiket
GÖZLENEN
Quantum testbed: the screen’s structure, terms and states for Quantum computing.Örnek adlar ve örnekleyici değerler; bir tasarımdır, kayıt veya canlı bir sistem değildir.
04Alanlar genelinde

Quantum computing matters to the domains through simulation and through cryptography.

05Yöntemler ve kanıt

How quantum computing is modelled, measured and tested.

Model, varsayımları, verileri ve belirsizliği, bir bilim insanının veya mühendisin kontrol edeceği biçimde. Yapılar yayımlanmış yöntemleri izler. Çizilen değerler bulgu değil, açıklayıcıdır.

Sistem modeli

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

++−+KuantumSiberTopluluklarEkonomiR pekiştiriciB dengeleyici
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.
FAIR yol gösterici ilkeleri · GO FAIR ve FORCE11W3C PROV · World Wide Web ConsortiumBelirsizliklerin tutarlı ele alınmasına ilişkin kılavuz · IPCCCEOS Analysis Ready Data · Yer Gözlem Uyduları Komitesi
06Göstergeler

Neyin ve ne kadar iyi ölçüldüğü.

Her gösterge birimini, sıklığını, ardındaki kaynak türünü ve bir değerin taşıyacağı kanıt etiketini taşır. Hiçbir değer gösterilmez: değerleri bir program kendi yetkisi altında sağlar.

GöstergeBirimSıklıkKaynak türüEtiket
Physical qubit countqubitsper announcementPublished device resultsBİLDİRİLMİŞ
Two-qubit gate fidelitypercentper deviceBenchmark resultsBİLDİRİLMİŞ
Logical qubit error rateerrors per logical operationper experimentPeer-reviewed experimentsGÖZLENEN
Coherence timemicrosecondsper deviceDevice characterisationBİLDİRİLMİŞ
Quantum volume or similar holistic benchmarkbenchmark scoreper devicePublished benchmarksBİLDİRİLMİŞ
Demonstrations surviving classical challengesayıinceleme başınaLiterature reviewTAHMİNİ
07Kaynaklar

Kanıtın nereden geldiği.

Her biri lisans sınıfıyla birlikte, adı belirtilmiş kamuya açık veri kümeleri ve kurumsal kayıtlar. Anlaşmaya dayalı kaynaklar yalnızca koşullarına göre kullanılır ve asla yeniden yayımlanmaz.

KaynakSağladıklarıLisans sınıfı
arXiv quant-ph and peer-reviewed journalsPrimary experimental and theoretical resultsOpen access preprints; journal licence per article
Metriq benchmark platform (Unitary Foundation)Community-submitted quantum benchmark resultsOpen, licence to check
Vendor technical documentation and roadmapsDevice specifications and stated targetsPublic documents, terms per vendor
National academies and agency assessments of quantum computingIndependent assessments of progress and prospectsPublic, terms per publisher
QED-C reportsIndustry consortium analyses of use cases and benchmarksPublic reports, terms to check
08Kararlar

Kim karar verir ve kanıt neye hizmet eder.

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

Kim karar verirSoruBu sayfanın hizmet ettiği kanıt
Research funders and science ministriesHow much to invest in quantum computing research and accessProgress summaries; independent assessments
Organisations exploring quantum useWhether a problem is a plausible quantum use caseUse case assessments with classical baselines
Security agenciesHow progress affects cryptographic migration timelinesError correction and scale evidence

Bu konunun ürettiği çıktılar

  • Progress summaries that separate peer-reviewed results from roadmaps
  • Benchmark interpretation guides
  • Use case assessments with classical baselines
  • Evidence notes for research funders
09Temel sorular

Uzmanların sordukları.

The central question is what has been demonstrated, not what has been promised.

  • How many qubits does a device have, and how good are they: what are their error rates and coherence times?
  • Can errors be corrected faster than they accumulate, and at what cost in physical qubits per logical qubit?
  • Which algorithms offer a demonstrated advantage over the best classical methods, and for which problems?
  • Are claims of quantum advantage robust to improved classical algorithms?
  • Which hardware approaches are likely to scale, and what limits them?
10Mekanizmalar

Mekanizmalar ve etkenler.

Quantum computers gain their power from interference: algorithms are designed so that wrong answers cancel and right answers reinforce. That power is fragile. Qubits lose their quantum state through interaction with the environment, and every operation introduces some error. Quantum error correction encodes one reliable logical qubit in many physical qubits, but only works if physical error rates are below a threshold, and it multiplies the hardware required.

Known algorithms with large demonstrated speed-ups are few. Factoring and discrete logarithms, which underpin public-key cryptography, are the best-known examples; simulation of quantum sistemleri in chemistry and physics is another. For many optimisation and machine-learning problems, a practical advantage has not been established, and improved classical algorithms have repeatedly narrowed claimed gaps.

11Yöntemler ve veriler

Nasıl incelendiği ve yöntemlerin nerede durduğu.

Yöntem veya veriGösterdiğiSınırlar
Benchmarking of gate fidelity and coherenceQuality of physical qubitsBenchmarks can be chosen to flatter a device
Error-correction experimentsWhether logical qubits outperform physical onesEarly demonstrations are small and short-lived
Algorithm complexity analysisTheoretical speed-up and resource estimatesResource estimates depend on hardware assumptions
Classical simulation and verificationWhether results could be reproduced classicallyVerification becomes harder as devices grow
Peer-reviewed literature versus announcementsWhat has been independently assessedAnnouncements often precede, or replace, peer review
12Yöntemler

Nasıl incelendiği ve yöntemlerin söyleyemeyecekleri.

  1. Fizik ve kuantum bilimiKübit gürültüsünün karakterizasyonu · Kuantum saatlerinin metrolojisi · Kuantum etkilerinin doğrulanmasıBurada uygulanır
  2. Kuantum bilişim, algılama ve iletişimKarşılaştırılabilir kıyaslama · Teknoloji hazırlık değerlendirmesi · Güvenlik etkilerinin izlenmesiBurada uygulanır
  3. Olasılık ve istatistikDoğruluk tahmini · Üstünlük iddialarının test edilmesi · Patent ve yatırım verilerinin analiziBurada uygulanır
13Where this page’s references

Where this page’s references lead.

Bu sayfanın karşılaştırıldığı kuruluşlar ve belgeler. Durumlar ve sürümler değişir; her bağlantı yayımlayan kuruluşa gider.

14Sorular

Sorular ve yanıtlar.

Kübit nedir?
The basic unit of quantum information, a two-level quantum system that can be in a superposition of states and become entangled with other qubits.
What is quantum advantage?
A demonstration that a quantum computer solves a specific task faster or better than the best known classical method. Claims are often challenged by improved classical methods.
What is fault-tolerant quantum computing?
Computing that uses quantum error correction so that long calculations can run reliably despite errors in physical qubits.
Why does qubit count alone mislead?
Because quality matters as much as quantity. Many noisy qubits may be less useful than fewer high-fidelity ones, and practical applications require error-corrected logical qubits.
Does the platform predict when large quantum computers will arrive?
No. Timelines are uncertain, and the platform reports expert views as ranges with their assumptions rather than as dates.
RaporlarKatkıda bulunun

Bu sayfadan kanıt katkısında bulunun.

Raporlar 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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Kuantum Teknolojileri

Bir yöntem, bir veri seti ya da bir soru getirin.

Bilgi ve başvurular bugün açıktır. Bir başvuru bir referans numarası alır ve bir sonraki adımı belirtir; başvurular, ödemeler, işlem kapasitesi tahsisleri ve kayıtlar yalnızca ekipleri, koşulları ve inceleme kapasiteleri mevcut olduğunda açılır.