All Outputs (3)

Enhanced violations of Leggett-Garg inequalities in an experimental three-level system (2017)
Journal Article
Wang, K., Emary, C., Zhan, X., Bian, Z., Li, J., & Xue, P. (2017). Enhanced violations of Leggett-Garg inequalities in an experimental three-level system. Optics express, 25(25), 31462-31470. https://doi.org/10.1364/OE.25.031462

Leggett-Garg inequalities are tests of macroscopic realism that can be violated by quantum mechanics. In this letter, we realise photonic Leggett-Garg tests on a three-level system and implement measurements that admit three distinct measurement outc... Read More about Enhanced violations of Leggett-Garg inequalities in an experimental three-level system.

Ambiguous measurements, signaling, and violations of Leggett-Garg inequalities (2017)
Journal Article
Emary, C. (2017). Ambiguous measurements, signaling, and violations of Leggett-Garg inequalities. Physical Review A, 96(4), Article 042102. https://doi.org/10.1103/PhysRevA.96.042102

Ambiguous measurements do not reveal complete information about the system under test. Their quantum-mechanical counterparts are semiweak (or in the limit, weak) measurements and here we discuss their role in tests of the Leggett-Garg inequalities. W... Read More about Ambiguous measurements, signaling, and violations of Leggett-Garg inequalities.

Coherent control in quantum transport: Amplification, filtering and switching at finite bias (2017)
Journal Article
Thethi, R., & Emary, C. (2017). Coherent control in quantum transport: Amplification, filtering and switching at finite bias. Quantum Science and Technology, 2(2), 024011. https://doi.org/10.1088/2058-9565/aa72c8

We consider coherent feedback control of quantum transport and focus on the application of simple controllers and the effects of a finite bias voltage. We show that simple single-parameter controllers can give rise to a range of useful effects such a... Read More about Coherent control in quantum transport: Amplification, filtering and switching at finite bias.