期刊
SCIENCE
卷 335, 期 6066, 页码 303-308出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1214707
关键词
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资金
- European Commission, Q-ESSENCE [248095]
- European Research Council [QIT4QAD]
- John Templeton Foundation
- Austrian Science Fund (FWF) [SFB-FOCUS, Y585-N20]
- Engineering and Physical Sciences Research Council [EP/E059600/1]
- Canada's Natural Sciences and Engineering Research Council
- Institute for Quantum Computing
- QuantumWorks
- National Research Foundation
- Ministry of Education, Singapore
- Air Force Office of Scientific Research, Air Force Material Command, U.S. Air Force [FA8655-11-1-3004]
- Austrian Science Fund (FWF) [Y 585] Funding Source: researchfish
- Engineering and Physical Sciences Research Council [EP/E059600/1] Funding Source: researchfish
- Austrian Science Fund (FWF) [Y585] Funding Source: Austrian Science Fund (FWF)
- EPSRC [EP/E059600/1] Funding Source: UKRI
Quantum computers, besides offering substantial computational speedups, are also expected to preserve the privacy of a computation. We present an experimental demonstration of blind quantum computing in which the input, computation, and output all remain unknown to the computer. We exploit the conceptual framework of measurement-based quantum computation that enables a client to delegate a computation to a quantum server. Various blind delegated computations, including one- and two-qubit gates and the Deutsch and Grover quantum algorithms, are demonstrated. The client only needs to be able to prepare and transmit individual photonic qubits. Our demonstration is crucial for unconditionally secure quantum cloud computing and might become a key ingredient for real-life applications, especially when considering the challenges of making powerful quantum computers widely available.
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