Quantum entanglement of unitary operators on bipartite systems
نویسندگان
چکیده
منابع مشابه
Quantum entanglement of unitary operators on bi-partite systems
Quantum entanglement plays a key role in quantum information theory. In recent years, there has been a lot of efforts to characterize the entanglement of quantum states both qualitatively and quantitatively. Entangled states can be generated from disentangled states by the action of a non-local Hamitonians. That means these Hamiltonians have the ability to entangle quantum states. It is therefo...
متن کاملCharacterizing the entanglement of bipartite quantum systems
Entangled states have been known almost from the very beginning of quantum mechanics @1,2#, and their somewhat unusual features have been investigated for many years. However, recent developments in the theory of quantum information @3# have required a deeper knowledge of their properties. The simplest system where one can study entanglement is represented by a bipartite system. In such a syste...
متن کاملEntanglement of Bipartite Quantum Systems driven by Repeated Interactions
We consider a non-interacting bipartite quantum system HA S ⊗ HB S undergoing repeated quantum interactions with an environment modeled by a chain of independant quantum systems interacting one after the other with the bipartite system. The interactions are made so that the pieces of environment interact first with HA S and then with HB S . Even though the bipartite systems are not interacting,...
متن کاملNotes on quantum entanglement of local operators
This is an expanded version of the short report arXiv:1401.0539, where we studied the time evolution of (Renyi) entanglement entropies for the excited state defined by acting a given local operator on the ground state. In the present paper, we introduce (Renyi) entanglement entropies of given local operators which are defined by late time values of excesses of (Renyi) entanglement entropies. Th...
متن کاملConstructive control of quantum systems using factorization of unitary operators
We demonstrate how structured decompositions of unitary operators can be employed to derive control schemes for finite-level quantum systems that require only sequences of simple control pulses such as square wave pulses with finite rise and decay times or Gaussian wavepackets. To illustrate the technique, it is applied to find control schemes to achieve population transfers for pure-state syst...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2002
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.66.044303