56 citations · 186 across the 21 of their papers we have counts for
6 papers · 1 filter
Comment on "How to observe and quantify quantum-discord states via correlations"
Parveen Kumar, Kyrylo Snizhko
The protocol proposed in the commented-upon article can certify zero discord; however, it fails to quantify non-zero discord for some states. Further, the protocol is less efficien…
Weak-measurement-induced phases and dephasing: broken symmetry of the geometric phase
Kyrylo Snizhko, Nihal Rao, Parveen Kumar +1
Coherent steering of a quantum state, induced by a sequence of weak measurements, has become an active area of theoretical and experimental study. For a closed steered trajectory,…
Quantum Zeno effect with partial measurement and noisy dynamics
Parveen Kumar, Alessandro Romito, Kyrylo Snizhko
We study the Quantum Zeno Effect (QZE) induced by continuous partial measurement in the presence of short-correlated noise in the system Hamiltonian. We study the survival probabil…
Weak-measurement-induced asymmetric dephasing: manifestation of intrinsic measurement chirality
Kyrylo Snizhko, Parveen Kumar, Nihal Rao +1
Geometrical dephasing is distinct from dynamical dephasing in that it depends on the trajectory traversed, hence it reverses its sign upon flipping the direction in which the path…
Engineering two-qubit mixed states with weak measurements
Parveen Kumar, Kyrylo Snizhko, Yuval Gefen
It is known that protocols based on weak measurements can be used to steer quantum systems into pre-designated pure states. Here we show that weak-measurement-based steering protoc…
Quantum Zeno effect appears in stages
Kyrylo Snizhko, Parveen Kumar, Alessandro Romito
In the quantum Zeno effect, quantum measurements can block the coherent oscillation of a two level system by freezing its state to one of the measurement eigenstates. The effect is…