Zobrazeno 1 - 10
of 764
pro vyhledávání: '"Fei, S. M."'
Publikováno v:
Physical Review A 79, 024303 (2009)
We explore how entanglement of a general bipartite system evolves when one subsystem undergoes the action of an arbitrary noisy channel. It is found that the dynamics of entanglement for general bipartite systems under the influence of such channel i
Externí odkaz:
http://arxiv.org/abs/0806.4228
Publikováno v:
Commun. Theor. Phys. 45 (2006) 267-270
The equivalence of multipartite quantum mixed states under local unitary transformations is studied. A criterion for the equivalence of non-degenerate mixed multipartite quantum states under local unitary transformations is presented.
Comment: 7
Comment: 7
Externí odkaz:
http://arxiv.org/abs/quant-ph/0602136
Publikováno v:
Rept.Math.Phys. 53 (2004) 363-370
Point interactions for the second derivative operator in one dimension are studied. Every operator from this family is described by the boundary conditions which include a $ 2 \times 2 $ real matrix with the unit determinant and a phase. The role of
Externí odkaz:
http://arxiv.org/abs/quant-ph/0406158
Publikováno v:
Phys. Rev. A 68 (2003) 062313
A new necessary separability criterion that relates the structures of the total density matrix and its reductions is given. The method used is based on the realignment method [K. Chen and L.A. Wu, Quant. Inf. Comput. 3, 193 (2003)]. The new separabil
Externí odkaz:
http://arxiv.org/abs/quant-ph/0312185
Publikováno v:
Int. J. Quant. Inform. 1(2003)337-347
We investigate the canonical forms of positive partial transposition (PPT) density matrices in ${\cal C}^2 \otimes {\cal C}^M \otimes {\cal C}^N$ composite quantum systems with rank $N$. A general expression for these PPT states are explicitly obtain
Externí odkaz:
http://arxiv.org/abs/quant-ph/0312031
Publikováno v:
Commun. Theor. Phys. 40 (2003)515-518
We give a canonical form of PPT states in ${\cal C}^2 \otimes {\cal C}^2\otimes {\cal C}^2 \otimes {\cal C}^N$ with rank=$N$. From this canonical form a necessary separable condition for these states is presented.
Comment: Latex, 8 pages
Comment: Latex, 8 pages
Externí odkaz:
http://arxiv.org/abs/quant-ph/0310146
Publikováno v:
Phys. Rev. A 68 (2003) 022315
The separability and entanglement of quantum mixed states in $\Cb^2 \otimes \Cb^3 \otimes \Cb^N$ composite quantum systems are investigated. It is shown that all quantum states $\rho$ with positive partial transposes and rank $r(\rho)\leq N$ are sepa
Externí odkaz:
http://arxiv.org/abs/quant-ph/0308159
Publikováno v:
Foundation of Probability and Physics-2, Vaexjoe University Press, 2003(37-56)
Teleportation for pure states, mixed states with standard and optimal protocols are introduced and investigated systematically. An explicit equation governing the teleportation of finite dimensional quantum pure states by a generally given non-local
Externí odkaz:
http://arxiv.org/abs/quant-ph/0308009
Publikováno v:
Lett. Math. Phys. 59, 2002(227-242)
General point interactions for the second derivative operator in one dimension are studied. In particular, ${\mathcal P \mathcal T}$-self-adjoint point interactions with the support at the origin and at points $\pm l$ are considered. The spectrum of
Externí odkaz:
http://arxiv.org/abs/quant-ph/0206112
Publikováno v:
Operator Theory: Advances and Applications, 132(2002)67-76
A study of the integrability of one-dimensional quantum mechanical many-body systems with general point interactions and boundary conditions describing the interactions which can be independent or dependent on the spin states of the particles is pres
Externí odkaz:
http://arxiv.org/abs/quant-ph/0205145