21 citations · 28 across the 5 of their papers we have counts for
5 papers
Limitations on the maximal level of entanglement of two singlet-triplet qubits in GaAs quantum dots
Igor Bragar, Łukasz Cywiński
We analyze in detail a procedure of entangling of two singlet-triplet (-) qubits operated in a regime when energy associated with the magnetic field gradient, , i…
Retardation of entanglement decay of two spin qubits by quantum measurements
Igor Bragar
We study a system of two electron spins each interacting with its small nuclear spin environment (NSE), which is a prototype system of two electron spin quantum dot (QD) qubits. We…
Dynamics of entanglement of two electron spins interacting with nuclear spin baths in quantum dots
Igor Bragar, Łukasz Cywiński
We study the dynamics of entanglement of two electron spins in two quantum dots, in which each electron is interacting with its nuclear spin environment. Focusing on the case of un…
Intraband absorption in finite, inhomogeneous quantum dot stacks for intermediate band solar cells: limitations and optimization
Igor Bragar, Paweł Machnikowski
We present a theoretical analysis of intraband optical transitions from the intermediate pseudo-band of confined states to the conduction band in a finite, inhomogeneous stack of s…
Intermediate band formation and intraband absorption for electrons in an inhomogeneous chain of quantum dots
Igor Bragar, Paweł Machnikowski
We study the electron states of a chain of non-identical, vertically stacked quantum dots (QDs). We discuss how the pseudo-band formed of the ground states confined in the QDs disi…