Cross-Platform Verification of Intermediate Scale Quantum Devices.
Phys Rev Lett
; 124(1): 010504, 2020 Jan 10.
Article
em En
| MEDLINE
| ID: mdl-31976701
ABSTRACT
We describe a protocol for cross-platform verification of quantum simulators and quantum computers. We show how to measure directly the overlap Tr[ρ_{1}ρ_{2}] and the purities Tr[ρ_{1,2}^{2}], and thus a fidelity of two, possibly mixed, quantum states ρ_{1} and ρ_{2} prepared in separate experimental platforms. We require only local measurements in randomized product bases, which are communicated classically. As a proof of principle, we present the measurement of experiment-theory fidelities for entangled 10-qubit quantum states in a trapped ion quantum simulator.
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MEDLINE
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En
Ano de publicação:
2020
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Article