| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevLett.108.070402 |
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| Author | Search for: Lundeen, J.S.1; Search for: Bamber, C.1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for National Measurement Standards
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| Format | Text, Article |
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| Subject | Density matrix; Direct measurement; In-situ; Mixed state; Operational definition; Quantum state; Weak measurements; Measurements; Quantum optics; Quantum theory |
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| Abstract | Recent work by Lundeen et al. directly measured the wave function by weakly measuring a variable followed by a normal (i.e., "strong") measurement of the complementary variable. We generalize this method to mixed states by considering the weak measurement of various products of these observables, thereby providing the density matrix an operational definition in terms of a procedure for its direct measurement. The method only requires measurements in two bases and can be performed in situ, determining the quantum state without destroying it. © 2012 American Physical Society. |
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| Publication date | 2012 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21269506 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 80f0c646-4dab-4aeb-bf05-8897d1d06d11 |
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| Record created | 2013-12-12 |
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| Record modified | 2020-04-21 |
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