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Superposing pure quantum states with partial prior information
Shruti Dogra
Published in American Physical Society
Volume: 97
Issue: 5
The principle of superposition is an intriguing feature of quantum mechanics, which is regularly exploited in many different circumstances. A recent work [M. Oszmaniec, Phys. Rev. Lett. 116, 110403 (2016)PRLTAO0031-900710.1103/PhysRevLett.116.110403] shows that the fundamentals of quantum mechanics restrict the process of superimposing two unknown pure states, even though it is possible to superimpose two quantum states with partial prior knowledge. The prior knowledge imposes geometrical constraints on the choice of input states. We discuss an experimentally feasible protocol to superimpose multiple pure states of a d-dimensional quantum system and carry out an explicit experimental realization for two single-qubit pure states with partial prior information on a two-qubit NMR quantum information processor. © 2018 American Physical Society.
About the journal
JournalData powered by TypesetPhysical Review A
PublisherData powered by TypesetAmerican Physical Society
Open AccessYes
Concepts (10)
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    Quantum computers
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    Experimental realizations
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    Geometrical constraints
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    Principle of superposition
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    Prior information
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    Prior knowledge
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    Quantum information
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    Quantum optics