| name | quantum-verifiable-blind-computing |
| description | Comparative analysis and design framework for verifiable blind quantum computing (VBQC) client architectures. Covers emission-based, measurement-based, and rotation-based client designs with single-server, single-client protocols using measurement-based quantum computation. Evaluates security proofs, protocol execution rates, error behavior, and hardware cost trade-offs. Activation: verifiable blind quantum computing, VBQC client architecture, blind quantum computation, quantum client design, quantum cloud security, verifiable quantum delegation. |
| metadata | {"arxiv_id":"2607.05650","published":"2026-07-09","tags":["quantum","blind-computing","verifiability","client-architecture","systems-engineering","security"]} |
Verifiable Blind Quantum Computing Client Architectures
Description
Framework for selecting and comparing client architectures in verifiable blind quantum computing (VBQC), where a client delegates quantum computations to a remote server without revealing input, computation, or output, while also verifying correct execution.
Client Architecture Categories
1. Emission-Based Clients
- Client prepares and sends quantum states to server
- Server performs measurements and returns classical results
- Hardware: Requires quantum state preparation capability (e.g., single-photon source)
- Security: Information-theoretic security based on measurement-based quantum computation (MBQC)
2. Measurement-Based Clients
- Client performs measurements on qubits returned by server
- Server prepares entangled resource states
- Hardware: Requires quantum measurement capability only
- Trade-off: Lower hardware complexity than emission-based, but requires quantum communication in both directions
3. Rotation-Based Clients
- Client applies rotations to qubits before/after server processing
- Server performs entangling operations
- Hardware: Requires quantum rotation gates on client side
- Trade-off: Intermediate complexity between emission and measurement-based
Evaluation Dimensions
Security Guarantees
- Blindness: Server learns nothing about input, computation, or output
- Verifiability: Client can detect if server deviates from protocol
- Information-theoretic security: Security does not depend on computational assumptions
Protocol Execution Rate
- Each architecture has different rates at which protocol rounds can be executed
- Rate equations depend on: communication latency, quantum operation speed, classical processing overhead
- Emission-based typically fastest (one-way communication), measurement-based slowest (two-way)
Error Behavior
- Different architectures have different error propagation characteristics
- Emission-based: errors introduced at preparation stage
- Measurement-based: errors introduced at measurement stage
- Rotation-based: errors compound through rotation operations
Hardware Cost
- Emission-based: highest (quantum state preparation)
- Measurement-based: medium (quantum measurement only)
- Rotation-based: medium-high (quantum rotation gates)
Usage Patterns
Pattern 1: Architecture Selection for Matter-Qubit Server
- Identify server type (matter-qubit vs. photonic)
- Determine available client-side quantum capabilities
- Evaluate security requirements (blindness only vs. verifiability)
- Compare protocol execution rates for target application
- Select architecture minimizing hardware cost while meeting security and performance requirements
Pattern 2: Security Proof Verification
- Identify the specific VBQC protocol variant
- Check that the security proof covers the chosen client architecture
- Verify assumptions about server capabilities and adversarial model
- Ensure protocol parameters (number of trap qubits, verification rounds) meet target security level
Pitfalls
- Protocol-server mismatch: Some security proofs assume specific server capabilities. Verify compatibility between client architecture proof and actual server implementation.
- Rate underestimation: Protocol execution rate equations often assume ideal conditions. Add 20-50% margin for real-world overhead from classical communication latency and error correction.
- Hardware over-specification: Don't assume emission-based is always best. For many applications, measurement-based provides sufficient security at lower hardware cost.
- Single-server limitation: This framework covers single-server, single-client protocols only. Multi-server or multi-client VBQC requires different analysis.
Related Skills
quantum-verification-cryptographic — classical verification of quantum computationblind-quantum-computation — blind quantum computing protocolsquantum-network-security — security patterns for quantum networks
