Blind quantum computation over a collective-noise channel

Abstract

Blind quantum computation (BQC) allows a client (Alice), who only possesses relatively poor quantum devices, to delegate universal quantum computation to a server (Bob) in such a way that Bob cannot know Alice's inputs, algorithm, and outputs. The quantum channel between Alice and Bob is noisy, and the loss over the long-distance quantum communication should also be taken into account. Here we propose to use decoherence-free subspace (DFS) to overcome the collective noise in the quantum channel for BQC, which we call DFS-BQC. We propose three variations of DFS-BQC protocols. One of them, a coherent-light-assisted DFS-BQC protocol, allows Alice to faithfully send the signal photons with a probability proportional to a transmission rate of the quantum channel. In all cases, we combine the ideas based on DFS and the Broadbent-Fitzsimons-Kashefi protocol, which is one of the BQC protocols, without degrading unconditional security. The proposed DFS-based schemes are generic and hence can be applied to other BQC protocols where Alice sends quantum states to Bob.

11 pages, 6 figures

References in corpus (8)

• Robustness and device independence of verifiable blind quantum computing
• Experimental Quantum Communication without a Shared Reference Frame
• Robust photonic entanglement distribution via state-independent encoding onto decoherence-free subspace
• Overcoming efficiency constraints on blind quantum computation
• Device-Independent Verifiable Blind Quantum Computation
• Experimental Demonstration of Decoherence-Free One-Way Information Transfer
• Efficient decoherence-free entanglement distribution over lossy quantum channels
• Experimental ancilla-assisted qubit transmission against correlated noise using quantum parity checking

Cited by in corpus (15)

• Photonic quantum information processing: a review
• Blind quantum computation with noise environment
• Experimental demonstration of secure quantum remote sensing
• Quantum remote sensing with asymmetric information gain
• Multi-client distributed blind quantum computation with the Qline architecture
• Quantum remote sensing under the effect of dephasing
• Blind quantum computation for a user who only performs single-qubit gates
• Uncertainty of quantum channels via modified generalized variance and modified generalized Wigner-Yanase-Dyson skew information
• Quantum cryptography beyond key distribution: theory and experiment
• Measurement-based universal blind quantum computation with minor resources
• Variational secure cloud quantum computing
• Anonymous estimation of intensity distribution of magnetic fields with quantum sensing network
• Simultaneous quantum identity authentication scheme utilizing entanglement swapping with secret key preservation
• Experimental demonstration of robust entanglement distribution over reciprocal noisy channels assisted by a counter-propagating classical reference light
• Optimal nonlocal conversion of photonic four-partite entanglement from two Bell pairs in quantum networks