🧬 QuantumLangChain: Complete Theory & Architecture¶

📋 Table of Contents¶

1. License Requirements
2. Theoretical Foundation
3. System Architecture
4. Quantum-Classical Hybridization
5. Implementation Details
6. License Integration Points
7. Development Guidelines

🔐 License Requirements¶

⚠️ IMPORTANT: ALL features require valid licensing with 24-hour grace period for evaluation.

License Tiers¶

graph TB
    subgraph "License Tiers"
        A[Free Trial - 24hrs]
        B[Basic License]
        C[Professional License]
        D[Enterprise License]
        E[Research License]
    end

    subgraph "Feature Access"
        F[Basic Chains]
        G[Quantum Memory]
        H[Multi-Agent Systems]
        I[Enterprise Backends]
        J[Research Features]
    end

    A --> F
    B --> F
    B --> G
    C --> G
    C --> H
    D --> H
    D --> I
    E --> J

Grace Period Policy¶

• Duration: 24 hours from first use
• Contact: bajpaikrishna715@gmail.com with machine ID
• Machine ID: Automatically generated hardware fingerprint
• Features: Limited to basic functionality during grace period

🧠 Theoretical Foundation¶

Quantum Information Theory¶

QuantumLangChain is built upon fundamental principles of quantum information theory, extended to classical AI systems through mathematical abstractions.

graph LR
    subgraph "Quantum Principles"
        A[Superposition]
        B[Entanglement]
        C[Decoherence]
        D[Measurement]
    end

    subgraph "AI Applications"
        E[Parallel Reasoning]
        F[Memory Correlation]
        G[State Evolution]
        H[Decision Collapse]
    end

    A --> E
    B --> F
    C --> G
    D --> H

Mathematical Foundation¶

Quantum State Representation

|ψ⟩ = α|0⟩ + β|1⟩
where |α|² + |β|² = 1

Entangled Memory States

|Ψ⟩ = (α|00⟩ + β|11⟩)/√2

Decoherence Evolution

ρ(t) = e^(-γt)ρ(0) + (1-e^(-γt))ρ_mixed

Hybrid Quantum-Classical Framework¶

graph TB
    subgraph "Classical Layer"
        A[LLM Processing]
        B[Traditional ML]
        C[Logic Systems]
    end

    subgraph "Quantum Layer"
        D[Quantum Circuits]
        E[Quantum States]
        F[Quantum Algorithms]
    end

    subgraph "Hybrid Interface"
        G[State Encoding]
        H[Measurement]
        I[Feedback Loop]
    end

    A <--> G
    B <--> H
    C <--> I
    G --> D
    H --> E
    I --> F
    D --> G
    E --> H
    F --> I

🏗️ System Architecture¶

Complete System Overview¶

graph TB
    subgraph "User Interface Layer"
        A[Python API]
        B[CLI Tools]
        C[Jupyter Integration]
        D[Web Dashboard]
    end

    subgraph "License Management"
        E[License Validator]
        F[Grace Period Manager]
        G[Feature Gating]
        H[Usage Tracking]
    end

    subgraph "Core Framework"
        I[QLChain Engine]
        J[EntangledAgents]
        K[QuantumMemory]
        L[QuantumRetriever]
        M[Context Manager]
        N[Tool Executor]
        O[Prompt Chain]
    end

    subgraph "Quantum Backends"
        P[Qiskit Backend]
        Q[PennyLane Backend]
        R[Braket Backend]
        S[Cirq Backend]
        T[Simulator Backend]
    end

    subgraph "Storage Systems"
        U[HybridChromaDB]
        V[QuantumFAISS]
        W[Classical Stores]
        X[Cache Layer]
    end

    subgraph "Infrastructure"
        Y[Monitoring]
        Z[Logging]
        AA[Security]
        BB[Error Handling]
    end

    A --> E
    B --> E
    C --> E
    D --> E

    E --> I
    F --> J
    G --> K
    H --> L

    I --> P
    J --> Q
    K --> R
    L --> S
    M --> T

    I --> U
    J --> V
    K --> W
    L --> X

    I --> Y
    J --> Z
    K --> AA
    L --> BB

License Integration Points¶

graph LR
    subgraph "Entry Points"
        A[Package Import]
        B[Function Calls]
        C[Class Instantiation]
        D[API Endpoints]
    end

    subgraph "License Checks"
        E[Validation]
        F[Feature Check]
        G[Usage Count]
        H[Expiry Check]
    end

    subgraph "Actions"
        I[Allow Access]
        J[Grace Period]
        K[Deny Access]
        L[Upgrade Prompt]
    end

    A --> E
    B --> F
    C --> G
    D --> H

    E --> I
    F --> J
    G --> K
    H --> L

⚛️ Quantum-Classical Hybridization¶

Theoretical Model¶

The hybridization follows a structured approach where quantum operations enhance classical computations:

graph TB
    subgraph "Classical Processing"
        A[Input Processing]
        B[Context Analysis]
        C[Response Generation]
    end

    subgraph "Quantum Enhancement"
        D[Superposition States]
        E[Entangled Memory]
        F[Quantum Interference]
    end

    subgraph "Hybrid Operations"
        G[State Encoding]
        H[Quantum Evolution]
        I[Measurement]
        J[Classical Decoding]
    end

    A --> G
    B --> G
    C --> G

    G --> D
    G --> E
    G --> F

    D --> H
    E --> H
    F --> H

    H --> I
    I --> J

    J --> A
    J --> B
    J --> C

Quantum Memory Architecture¶

graph TB
    subgraph "Memory Hierarchy"
        A[Working Memory]
        B[Short-term Memory]
        C[Long-term Memory]
        D[Episodic Memory]
    end

    subgraph "Quantum States"
        E[psi_work]
        F[psi_short]
        G[psi_long]
        H[psi_episode]
    end

    subgraph "Operations"
        I[Entangle]
        J[Evolve]
        K[Measure]
        L[Decohere]
    end

    A <--> E
    B <--> F
    C <--> G
    D <--> H

    E --> I
    F --> J
    G --> K
    H --> L

    I --> E
    J --> F
    K --> G
    L --> H

Multi-Agent Entanglement¶

graph TB
    subgraph "Agent Network"
        A[Agent 1]
        B[Agent 2]
        C[Agent 3]
        D[Agent N]
    end

    subgraph "Entangled States"
        E[Psi_12]
        F[Psi_13]
        G[Psi_23]
        H[Psi_global]
    end

    subgraph "Shared Resources"
        I[Quantum Memory]
        J[Belief States]
        K[Decision Space]
        L[Communication Channel]
    end

    A <--> E
    A <--> F
    B <--> E
    B <--> G
    C <--> F
    C <--> G

    E --> I
    F --> J
    G --> K
    H --> L

    A --> I
    B --> J
    C --> K
    D --> L

🔧 Implementation Details¶

Core Components¶

QLChain Engine¶

# Licensed quantum chain implementation
class QLChain:
    def __init__(self, **kwargs):
        self._validate_license("quantumlangchain", ["core"])
        self.quantum_state = None
        self.decoherence_level = 0.0
        # ... implementation

    async def arun(self, query: str) -> Dict:
        self._validate_license("quantumlangchain", ["execution"])
        # Quantum-enhanced processing
        # ... implementation

Quantum Memory System¶

class QuantumMemory:
    def __init__(self, classical_dim: int, quantum_dim: int):
        self._validate_license("quantumlangchain", ["memory"])
        self.classical_memory = np.zeros(classical_dim)
        self.quantum_memory = QuantumRegister(quantum_dim)
        # ... implementation

    async def store(self, key: str, value: Any):
        self._validate_license("quantumlangchain", ["storage"])
        # Quantum storage with entanglement
        # ... implementation

Entangled Agents¶

class EntangledAgents:
    def __init__(self, agent_count: int):
        self._validate_license("quantumlangchain", ["multi-agent"])
        self.agents = []
        self.entanglement_matrix = np.zeros((agent_count, agent_count))
        # ... implementation

    async def collaborate(self, task: str):
        self._validate_license("quantumlangchain", ["collaboration"])
        # Multi-agent quantum collaboration
        # ... implementation

License Validation System¶

graph TB
    subgraph "Validation Process"
        A[License Check Request]
        B[Hardware Fingerprint]
        C[License Database]
        D[Feature Validation]
        E[Grace Period Check]
    end

    subgraph "Decision Tree"
        F{Valid License?}
        G{Grace Period?}
        H{Feature Allowed?}
    end

    subgraph "Outcomes"
        I[Allow Access]
        J[Limited Access]
        K[Deny Access]
        L[Contact Support]
    end

    A --> B
    B --> C
    C --> D
    D --> E

    E --> F
    F -->|Yes| H
    F -->|No| G
    G -->|Yes| J
    G -->|No| K
    H -->|Yes| I
    H -->|No| L

    K --> L

License Integration Points¶

Package-Level Integration¶

# quantumlangchain/__init__.py
from .licensing import LicenseManager, validate_license

# Global license validation on import
_license_manager = LicenseManager()

def _check_package_license():
    """Validate package license on import."""
    try:
        validate_license("quantumlangchain", grace_hours=24)
        print("✅ QuantumLangChain: License validated")
    except LicenseExpiredError:
        print("❌ License expired. Contact: bajpaikrishna715@gmail.com")
        print(f"🔧 Machine ID: {_license_manager.get_machine_id()}")
        # Allow 24-hour grace period
        _license_manager.start_grace_period()
    except LicenseNotFoundError:
        print("⚠️ No license found. Starting 24-hour evaluation period.")
        print(f"📧 Contact: bajpaikrishna715@gmail.com")
        print(f"🔧 Machine ID: {_license_manager.get_machine_id()}")
        _license_manager.start_grace_period()

# Automatic license check
_check_package_license()

Function-Level Decorators¶

from functools import wraps
from .licensing import validate_license, FeatureNotLicensedError

def requires_license(features=None, tier="basic"):
    """Decorator for license-protected functions."""
    def decorator(func):
        @wraps(func)
        async def async_wrapper(*args, **kwargs):
            try:
                validate_license("quantumlangchain", features, tier)
                return await func(*args, **kwargs)
            except FeatureNotLicensedError as e:
                raise RuntimeError(
                    f"Feature '{func.__name__}' requires {tier} license. "
                    f"Contact: bajpaikrishna715@gmail.com"
                )

        @wraps(func)
        def sync_wrapper(*args, **kwargs):
            try:
                validate_license("quantumlangchain", features, tier)
                return func(*args, **kwargs)
            except FeatureNotLicensedError as e:
                raise RuntimeError(
                    f"Feature '{func.__name__}' requires {tier} license. "
                    f"Contact: bajpaikrishna715@gmail.com"
                )

        return async_wrapper if asyncio.iscoroutinefunction(func) else sync_wrapper
    return decorator

Class-Level Licensing¶

class LicensedQuantumComponent:
    """Base class for all licensed quantum components."""

    def __init__(self, required_features=None, tier="basic"):
        self.required_features = required_features or ["core"]
        self.tier = tier
        self._validate_access()

    def _validate_access(self):
        """Validate license access for this component."""
        try:
            validate_license("quantumlangchain", self.required_features, self.tier)
        except LicenseError as e:
            machine_id = LicenseManager().get_machine_id()
            raise RuntimeError(
                f"License required for {self.__class__.__name__}. "
                f"Contact: bajpaikrishna715@gmail.com with Machine ID: {machine_id}"
            )

    def _check_feature_access(self, feature):
        """Check access to specific feature."""
        try:
            validate_license("quantumlangchain", [feature], self.tier)
            return True
        except FeatureNotLicensedError:
            return False

Usage Tracking¶

graph LR
    subgraph "Usage Events"
        A[Function Call]
        B[Class Creation]
        C[Feature Access]
        D[API Request]
    end

    subgraph "Tracking System"
        E[Event Logger]
        F[Usage Counter]
        G[Feature Stats]
        H[Time Tracker]
    end

    subgraph "Actions"
        I[License Check]
        J[Grace Period]
        K[Usage Limits]
        L[Renewal Alert]
    end

    A --> E
    B --> F
    C --> G
    D --> H

    E --> I
    F --> J
    G --> K
    H --> L

🛠️ Development Guidelines¶

License-First Development¶

1. Every Component: Must include license validation
2. Clear Messaging: User-friendly license error messages
3. Grace Period: 24-hour evaluation period
4. Contact Information: Always provide contact details
5. Machine ID: Include hardware fingerprint in errors
6. Feature Gating: Tier-based feature access

Error Handling Strategy¶

class QuantumLicenseError(Exception):
    """Base class for quantum license errors."""

    def __init__(self, message, machine_id=None, contact_email="bajpaikrishna715@gmail.com"):
        self.machine_id = machine_id or LicenseManager().get_machine_id()
        self.contact_email = contact_email

        full_message = (
            f"{message}\n"
            f"📧 Contact: {self.contact_email}\n"
            f"🔧 Machine ID: {self.machine_id}\n"
            f"⏰ Grace Period: 24 hours from first use"
        )
        super().__init__(full_message)

class LicenseExpiredError(QuantumLicenseError):
    """License has expired."""
    pass

class FeatureNotLicensedError(QuantumLicenseError):
    """Feature not available in current license tier."""
    pass

class GracePeriodExpiredError(QuantumLicenseError):
    """Grace period has expired."""
    pass

Testing with License Mocks¶

import pytest
from unittest.mock import patch

@pytest.fixture
def mock_valid_license():
    """Mock valid license for testing."""
    with patch('quantumlangchain.licensing.validate_license', return_value=True):
        yield

@pytest.fixture
def mock_expired_license():
    """Mock expired license for testing."""
    with patch('quantumlangchain.licensing.validate_license', 
               side_effect=LicenseExpiredError("License expired")):
        yield

def test_quantum_chain_with_license(mock_valid_license):
    """Test quantum chain with valid license."""
    chain = QLChain()
    result = chain.run("test query")
    assert result is not None

def test_quantum_chain_without_license(mock_expired_license):
    """Test quantum chain behavior without license."""
    with pytest.raises(RuntimeError, match="License required"):
        QLChain()

Documentation Standards¶

Every component must include:

1. License Requirements: Clear tier requirements
2. Grace Period Notice: 24-hour evaluation period
3. Contact Information: bajpaikrishna715@gmail.com
4. Feature Matrix: What features require which tier
5. Error Handling: Expected license-related errors
6. Examples: License-aware usage examples

📊 Feature Matrix¶

graph TB
    subgraph "Feature Tiers"
        A[Basic - $29/month]
        B[Professional - $99/month]
        C[Enterprise - $299/month]
        D[Research - $49/month]
    end

    subgraph "Core Features"
        E[Basic Chains]
        F[Quantum Memory]
        G[Simple Backends]
    end

    subgraph "Professional Features"
        H[Multi-Agent Systems]
        I[Advanced Backends]
        J[Quantum Retrieval]
    end

    subgraph "Enterprise Features"
        K[Distributed Systems]
        L[Custom Backends]
        M[Advanced Analytics]
    end

    subgraph "Research Features"
        N[Experimental APIs]
        O[Research Backends]
        P[Academic License]
    end

    A --> E
    A --> F
    A --> G

    B --> E
    B --> F
    B --> G
    B --> H
    B --> I
    B --> J

    C --> E
    C --> F
    C --> G
    C --> H
    C --> I
    C --> J
    C --> K
    C --> L
    C --> M

    D --> N
    D --> O
    D --> P

This comprehensive architecture ensures that every aspect of QuantumLangChain is properly licensed, with clear user guidance and a generous 24-hour grace period for evaluation.