3 papers
quant-ph2019
Achieving the ultimate precision limit in quantum NMR spectroscopy
Daniel Cohen, Tuvia Gefen, Laura Ortiz +1
The ultimate precision limit in estimating the Larmor frequency of unentangled rotating spins is well established, and is highly important for magnetometers, gyroscopes and man…
quant-ph2018
Quantum Error Correction with the Semion Code
Guillaume Dauphinais, Laura Ortiz, Santiago Varona +1
We present a full quantum error correcting procedure with the semion code: an off-shell extension of the double semion model. We construct open strings operators that recover the q…
cond-mat.supr-con2018
Topological Phases in Nodeless Tetragonal Superconductors
Santiago Varona, Laura Ortiz, Oscar Viyuela +1
We compute the topological phase diagram of 2D tetragonal superconductors for the only possible nodeless pairing channels compatible with that crystal symmetry. Subject to a Zeeman…