Condensed Matter Seminar
Measurment induced phase transition with partial post selection
Mr. Roei Rabaniam
BGU
Abstract
MSc seminar (student of Prof Dganit Meidan)
Our research focuses on the interplay between two non-commuting quantum jump measurements
for which the measurement outcome is partially post selected (PPS). By employing
various measurements on a many-body quantum system, we are able to both probe and
actively influence its dynamics. One of the interesting aspects of this setup is the connection
to quantum information: the system exhibits two distinct entanglement entropy (EE)
phases, determined by the ratio between the two measurement strengths. In one phase, the
EE follows a trivial area-law scaling, while in the other, it follows a topological area-law
scaling due to a subleading contribution to the EE which is identified by the topological EE.
Our research focuses on the interplay between two non-commuting quantum jump measurements
for which the measurement outcome is partially post selected (PPS). By employing
various measurements on a many-body quantum system, we are able to both probe and
actively influence its dynamics. One of the interesting aspects of this setup is the connection
to quantum information: the system exhibits two distinct entanglement entropy (EE)
phases, determined by the ratio between the two measurement strengths. In one phase, the
EE follows a trivial area-law scaling, while in the other, it follows a topological area-law
scaling due to a subleading contribution to the EE which is identified by the topological EE.