IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Controling the dynamics across a quantum phase transition
Autor/es:
TIELAS, DIEGO ALEJANDRO; ADOLFO DE CAMPO; LUIS PEDRO GARCÍA-PINTOS
Lugar:
Boston
Reunión:
Conferencia; APS March Meeting 2019; 2019
Institución organizadora:
APS
Resumen:
When a quantum phase transition is crossed in finite time, critical slowing down leads to the breakdown of adiabatic dynamics and the formation of topological defects. The average density of defects scales with the quench rate following a universal power-law predicted by the Kibble-Zurek mechanism (KZM). The scaling theory of phase transitions can however be used to determine the full counting statistics of topological defects, beyond the KZM. Knowledge of the distribution of topological defects provides new insights into the breakdown of adiabaticity. In addition, the quantum critical dynamics can be controlled. One approach relies on quantum monitoring via continuous quantum measurements. A second approach is based on local driving of the phase transition. We shall present theoretical and experimental progress based on these approaches. Funding support from the John Templeton Foundation is acknowledged.