Quantum Error Validation
Made Simple

Hardware-validated QEC with RΒ² = 0.9999. Fast, accurate, and easy to integrate.

Get Started Free Learn More

πŸ”₯ Timely: Google Quantum AI just demonstrated OTOC quantum advantage

In October 2025, Google published breakthrough OTOC(2) measurements achieving 13,000Γ— speedup over supercomputers. qsurf provides independent validation of both QEC and OTOC measurements.

Read Google's Announcement β†’

Proven Performance

Validated on Google Willow quantum hardware with exceptional accuracy

0.9999
RΒ² Linearity
<1%
Prediction Error
3.4s
50K Shots (d3)
5.4%
Lambda Accuracy

Why qsurf?

Fast, accurate quantum error validation without the complexity

⚑

Fast Processing

Lightning-fast validation of quantum error correction data. Process 50K shots in 3.4s (d=3), 6.3s (d=5), 12.7s (d=7) on real hardware.

🎯

Hardware Validated

Tested on real Google Willow quantum hardware. RΒ² = 0.9999 proves perfect linearity on actual quantum systems.

πŸ”Œ

Easy Integration

Simple REST API. Upload syndrome data, get validation results. No complex setup or dependencies required.

🌐

Multi-Platform Support

Validated: Google Willow superconducting qubits
Roadmap (Q1-Q2 2026): IBM Quantum, IonQ Aria, Amazon Braket

πŸ”’

Patent Protected

US Patent 63/903,809 (Pending). Proprietary algorithms with proven accuracy on quantum hardware.

πŸ”

Security & Privacy

βœ“ Data encrypted in transit (TLS 1.3)
βœ“ No raw syndrome data retention
βœ“ In-memory processing only
βœ“ SHA-256 cryptographic verification
View Security Documentation β†’

Validated Research Papers

qsurf methodology validated against breakthrough quantum computing research

πŸ†

Google Quantum AI

Quantum error correction below the surface code threshold (Nature, 2024)
Hardware Platform Google Willow (105 qubits)
Code Distances Validated d=3, d=5, d=7 (Multi-distance)
Validation Dataset 10,000 shots per distance
RΒ² Linearity d=3: 0.9996 | d=5: 1.0000 | d=7: 0.9999
Google Published Ξ› 2.14 Β± 0.02 (decoder output)
Data Source google_105Q_surface_code_d3_d5_d7
βœ“ Validated on Real Hardware Data

qsurf Validation Results: Successfully processed 10,000 shots per distance (d=3, 5, 7) from Google's Willow quantum processor. Our proprietary analysis framework achieved RΒ² > 0.999 linearity on real hardware syndrome data, validating theoretical predictions. The analysis distinguishes between raw measurement outcomes (Ξ› β‰ˆ 0.77) and post-decoder error suppression (Ξ› = 2.14), providing deeper insight into QEC performance across the full processing pipeline.

πŸ“– Read Full Validation Report β†’
βš–οΈ

Pauli Bias Analysis

X/Z Error Symmetry Validation (Sprint 1)
Hardware Platform Google Willow d=7
Date Validated October 27, 2025
X/Z Symmetry Validated (Pauli bias < 5%)
Statistical Method Bootstrap CI (95% confidence)
βœ“ Validated on Real Hardware Data

qsurf Premium Feature: Decomposed error rates into X vs Z Pauli errors, confirming symmetric error channels on Google Willow hardware. Bootstrap statistical validation provides confidence intervals for hardware characterization.

πŸ—ΊοΈ

Spatial Fingerprinting

Detector Layout Reconstruction (Sprint 2)
Hardware Platform Google Willow d=7
Date Validated October 27, 2025
MDS Accuracy 68-76% neighbor identification
Hot Spot Detected Detector #21 (z-score > 2)
Spatial Variation 59% excess beyond geometry
βœ“ Validated on Real Hardware Data

qsurf Premium Feature: Topology-agnostic reconstruction of detector layout from correlation data. Identified hardware hot spots without requiring physical geometry information.

🌊

OTOC Error Propagation

Out-of-Time-Order Correlator Analysis
Hardware Platform Google Willow d=7
Date Validated October 27, 2025
Propagation Patterns 19 detected
Butterfly Velocity 2.941 grid units/shot
Center vs Edge p=0.003 (1.36x ratio, HIGHLY SIGNIFICANT)
Key Finding Detector #21 = error convergence (physics)
βœ“ Validated on Real Hardware Data

qsurf Premium Feature: Distinguished error propagation physics from hardware defects. Detector #21 hot spot confirmed as error convergence point, NOT fabrication issue. Temporal-spatial correlation analysis reveals quantum information scrambling on real hardware.

Have a breakthrough QEC paper you'd like validated with our methodology?

Request Paper Validation

How It Works

Get from syndrome data to validated results in under 2 minutes

1

Get API Key

Sign up for free beta access. Receive API credentials in 30 seconds.

⏱️ 30 seconds
β†’
2

Upload Syndromes

POST your .b8 syndrome file to our REST API endpoint.

⏱️ 5 seconds
β†’
βœ“

View Results

Receive RΒ², error rate, and validation metrics instantly.

⏱️ 2-12 seconds
Get Started Free β†’
Beta testers get 3 months free ($0 β†’ $500/mo after beta)

Supported Quantum Hardware

Currently supporting Google Willow with more platforms coming soon

βœ…

Google Willow / Sycamore

Surface codes d=3,5,7 | Stim .b8 format | Fully tested with RΒ²=0.9999

⏳

IBM Eagle / Osprey

Qiskit format | Coming Q1 2026 | Request early access

⏳

IonQ Aria / Forte

Trapped ion systems | Coming Q1 2026 | Request early access

⏳

Amazon Braket

Multi-vendor support | Coming Q2 2026 | Request early access

βž•

Your Hardware?

We'll add support in 2 weeks. Upload sample data β†’

Pricing

Currently accepting beta testers β€” Get 3 months free

LIMITED TO FIRST 10 BETA TESTERS
🎯

Beta Program

FREE
3 months free access, then $500/month
  • βœ“ 10 validations per month
  • βœ“ Google Willow hardware (IBM/IonQ coming Q1 2026)
  • βœ“ Full validation reports (RΒ², error rates, Lambda)
  • βœ“ Email support (48hr response time)
  • βœ“ Custom hardware support (we add your platform)
  • βœ“ Beta feature access (Sprint 1-3 premium features)
Beta Requirement:

Share anonymized validation results for research/publication purposes. Your data remains confidentialβ€”only aggregate metrics are published.

Apply for Beta Access β†’

Commercial Pricing Coming Soon

After beta, we'll offer Researcher, Commercial, and Enterprise tiers with unlimited validations, multi-platform support, and dedicated account management.

Contact Sales for Enterprise Pricing

Apply for Beta Testing

Be one of the first 10 to validate quantum hardware with qsurf

What happens next:
  1. We'll review your application (1-2 days)
  2. If approved, we'll email you API credentials
  3. You upload sample data, we add your hardware support
  4. Free validation for 3 months, then $500/month
Privacy: Your data is confidential. We only share anonymized results if you consent. All communications are private.

Strategic Value for Enterprise

Solving critical bottlenecks in quantum error correction validation

🌐 Distributed QC Validation

First methodology for multi-machine error certification. Critical for networked quantum systems (2027-2028 timelines).

⚑ Fault-Tolerance Acceleration

Reduce validation cycles from hours to seconds. Accelerate hardware iteration and debugging workflows.

πŸ“Š Decoder-Independent Benchmarking

Compare hardware performance without decoder bias. Validates raw QEC capability, not post-processing choices.

βœ“ Cryptographic Reproducibility

SHA-256 verification enables regulatory compliance and scientific reproducibility. Same file = same results, always.

Security & Privacy

Enterprise-grade security with zero data retention policy

πŸ”’

Data Encryption

All data transmitted to qsurf API is encrypted using TLS 1.3 with perfect forward secrecy. No plaintext syndrome data ever touches our servers unencrypted.

⚑

Zero Retention

Raw syndrome files are processed in-memory only. After analysis completes, files are immediately discarded. We do NOT store your quantum measurement data.

πŸ”

Cryptographic Verification

Every validation includes SHA-256 hash of input data. Same file = same hash = same results, always. Enables reproducibility without storing raw data.

πŸ“Š

Result Privacy

Validation results (RΒ², error rates, Lambda) are stored with your account. Only you can access your results unless you explicitly consent to anonymized sharing.

πŸ›‘οΈ

API Security

Rate limiting (10 req/s), IP allowlisting available, API key rotation, CORS restrictions. Enterprise tier includes dedicated VPC and SOC 2 compliance.

πŸ“œ

Compliance

GDPR compliant (EU data residency available). HIPAA/ITAR on request for enterprise. Audit logs available for compliance verification.

What We Store vs. What We Don't

βœ“ What We Store

  • SHA-256 hash of input file
  • Validation results (RΒ², epsilon, Lambda)
  • Processing timestamps
  • Your account metadata
  • API usage statistics

βœ— What We DON'T Store

  • Raw syndrome measurement data (.b8 files)
  • Observable flip sequences
  • Detector firing patterns
  • Any reversible quantum data
  • Circuit-level information
Enterprise Security Add-ons:

Dedicated VPC, custom data residency (US/EU/Asia), on-premise deployment, SOC 2 Type II certification, pen-test reports, BAA for HIPAA. Contact security@qsurf.ai for security questionnaires.

Try the API

Test qsurf with your quantum syndrome data in seconds

Simple REST API

# Upload syndrome data and get validation results curl -X POST https://qsurf.ai/api/v1/validate \ -H "Authorization: Bearer YOUR_API_KEY" \ -F "file=@detection_events.b8" \ -F "platform=google_willow" \ -F "distance=3" \ -F "rounds=10" # Response (1.9 seconds for 50K shots) { "validation_id": "abc-123", "results": { "epsilon": 0.008708, "r_squared": 0.9999, "predicted_logical_error": 0.2275, "syndrome_density": 0.0524, "confidence_interval": [0.2201, 0.2349] }, "metadata": { "platform": "google_willow", "distance": 3, "n_shots": 50000 }, "processing_time_ms": 1913.26, "quota": { "remaining": 99 }, "status": "success" }
Authentication Required: Sign up to get your free API key. Free tier includes 5 validations per day. Request access or upgrade to enterprise for unlimited usage.
Test API Health Request Access

Hardware Validation

Validated on Google Willow's 105-qubit quantum processor

Google Willow Results

  • Distance 3: 0.3% error, RΒ² = 0.9999
  • Distance 5: 0.5% error, RΒ² = 0.9999
  • Distance 7: 0.9% error, RΒ² = 0.9998
  • Lambda: 5.42% error (predicting raw observables)
βœ“ Validated October 2025 on real quantum hardware

Ready to Integrate?

Enterprise licensing available. Get unlimited validations, dedicated support, and custom calibrations for your quantum platform.

Contact Sales