6533b856fe1ef96bd12b31ea
RESEARCH PRODUCT
Distillation by repeated measurements: Continuous spectrum case
Giuseppe CompagnoHiromichi NakazatoKazuya YuasaBruno Bellomosubject
PhysicsQuantum PhysicsSettore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciBipartite systemContinuous spectrumMathematical analysisFOS: Physical sciencesAtomic and Molecular Physics and OpticsMathematical Operatorslaw.inventionFormalism (philosophy of mathematics)lawQuantum mechanicsQuantum Physics (quant-ph)Quantum statistical mechanicsDistillationDistillation Continuous spectrumdescription
Repeated measurements on a part of a bipartite system strongly affect the other part not measured, whose dynamics is regulated by an effective contracted evolution operator. When the spectrum of this operator is discrete, the latter system is driven into a pure state irrespective of the initial state, provided the spectrum satisfies certain conditions. We here show that even in the case of continuous spectrum an effective distillation can occur under rather general conditions. We confirm it by applying our formalism to a simple model.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-01-01 |