Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.140406
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Funding
- Ente Cassa di Risparmio di Firenze
- CNR-RSTL
- U. K. EPSRC
- QIP IRC
- WCU
- Korea government (MEST) [R11-2008-095-01000-0]
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We present the experimental realization of a scheme, based on single-photon interference, for implementing superpositions of distinct quantum operations. Its application to a thermal light field (a well-categorized classical entity) illustrates quantum superposition from a new standpoint and provides a direct and quantitative verification of the bosonic commutation relation between creation and annihilation operators. By shifting the focus towards operator superpositions, this result opens interesting alternative perspectives for manipulating quantum states.
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