4 papers
Anderson Orthogonality as Measurement Backaction in Coupled Quantum Dots
Will Grant, Sarath Sankar, Elena Cornick +9
Measurement perturbs a quantum system by coupling it to external degrees of freedom, but detector backaction depends on the physical mechanism of measurement itself. In solid-state…
Direct signatures of Anderson orthogonality catastrophe in nonequilibrium quantum dots
Sarath Sankar, Joshua Folk, Yigal Meir +1
We propose schemes for unambiguous direct observation of Anderson orthogonality catastrophe (AOC) effects in a quantum dot coupled to a charge detector, allowing to estimate the AO…
Back-action effects in charge detection
Sarath Sankar, Matan Lotem, Joshua Folk +2
Charge detection offers a powerful probe of mesoscopic structures based on quantum dots, but it also invariably results in measurement back-action (MBA). If strong, MBA can be detr…
Relevance of Anisotropy in the Kondo Effect: Lessons From the Symplectic Case
Matan Lotem, Sarath Sankar, Tianhao Ren +5
A Kondo model with symplectic symmetry was recently put forward as the effective low-energy theory of a superconducting-island device coupled to multiple leads. This model, which p…