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Quantum logic spectroscopy
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<p>Quantum logic spectroscopy (QLS) is an ion control scheme that maps <a href="/facts/Quantum_information/Bl9QIvHj">quantum information</a> between two co-trapped ion species. Quantum logic operations allow desirable properties of each ion species to be utilized simultaneously. This enables work with ions and molecular ions that have complex internal energy level structures which preclude <a href="/facts/Laser_cooling/hU2c6tdk">laser cooling</a> and direct manipulation of state. QLS was first demonstrated by NIST in 2005. QLS was first applied to state detection in diatomic molecules in 2016 by Wolf et al, and later applied to state manipulation and detection of diatomic molecules by the Liebfried group at NIST in 2017 </p>