期刊
PHYSICAL REVIEW A
卷 98, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.98.062307
关键词
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资金
- Swiss National Science Foundation [P2GEP2_162060]
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Action ROSETTA [749316]
- European Research Council [337603]
- Danish Council for Independent Research (Sapere Aude)
- VILLUM FONDEN via the QMATH Centre of Excellence [10059]
- National Research, Development and Innovation Office NKFIH [K111734, KH125096]
- EPSRC [EP/J007838/1] Funding Source: UKRI
- Swiss National Science Foundation (SNF) [P2GEP2_162060] Funding Source: Swiss National Science Foundation (SNF)
- Marie Curie Actions (MSCA) [749316] Funding Source: Marie Curie Actions (MSCA)
The goal of self-testing is to characterize an a priori unknown quantum system based solely on measurement statistics, i.e., using an uncharacterized measurement device. Here we develop self-testing methods for quantum prepare-and-measure experiments, thus not necessarily relying on entanglement and/or violation of a Bell inequality. We present noise-robust techniques for self-testing sets of quantum states and measurements, assuming an upper bound on the Hilbert space dimension. We discuss in detail the case of a 2 -> 1 random access code with qubits, for which we provide analytically optimal self-tests. The simplicity and noise robustness of our methods should make them directly applicable to experiments.
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