111 citations · 475 across the 12 of their papers we have counts for
12 papers
Complete disentanglement by partial pure dephasing
Katarzyna Roszak, Pawel Machnikowski
We study the effect of pure dephasing on the entanglement of a pair of two-level subsystems (qubits). We show that partial dephasing induced by a super-Ohmic reservoir, correspondi…
Change of decoherence scenario and appearance of localization due to reservoir anharmonicity
Paweł Machnikowski
Although coupling to a super-Ohmic bosonic reservoir leads only to partial dephasing on short time scales, exponential decay of coherence appears in the Markovian limit (for long t…
"Which path" decoherence in quantum dot experiments
K. Roszak, P. Machnikowski
We analyze and interpret recent optical experiments with semiconductor quantum dots. We derive a quantitative relation between the amount of information transferred into the enviro…
Manifestation of fundamental quantum complementarities in time-domain interference experiments with quantum dots: A theoretical analysis
P. Machnikowski
A theoretical analysis is presented showing that fundamental complementarity between the particle-like properties of an exciton confined in a semiconductor quantum dot and the abil…
Reducing decoherence of the confined exciton state in a quantum dot by pulse-sequence control
V. M. Axt, P. Machnikowski, T. Kuhn
We study the phonon-induced dephasing of the exciton state in a quantum dot excited by a sequence of ultra-short pulses. We show that the multiple-pulse control leads to a consider…
Phonon impact on the coherent control of quantum states in semiconductor quantum dots
Anna Grodecka, Lucjan Jacak, Pawel Machnikowski +1
This chapter is devoted to the recent theoretical results on the optical quantum control over charges confined in quantum dots under influence of phonons. We show that lattice rela…