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Wyszukujesz frazę "03.67.-a" wg kryterium: Temat


Tytuł:
Two-Way Teleportation
Autorzy:
Grudka, A.
Chhajlany, R. W.
Powiązania:
https://bibliotekanauki.pl/articles/2036978.pdf
Data publikacji:
2003-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.67.-a
Opis:
A protocol for teleporting two qudits simultaneously in opposite directions using a single pair of maximally entangled qudits is presented. This procedure works provided that the product of dimensions d$\text{}_{1}$ and d$\text{}_{2}$ of the two qudits to be teleported does not exceed the dimension d of the individual qudits in the maximally entangled pair.
Źródło:
Acta Physica Polonica A; 2003, 104, 5; 409-413
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantum Information Theory and Geometry of Quantum States
Autorzy:
Kuś, M.
Powiązania:
https://bibliotekanauki.pl/articles/2030373.pdf
Data publikacji:
2001-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.65.Ud
03.67.-a
Opis:
The advantages of quantum information processing and transmission over corresponding classical operations are connected to the existence in composite quantum-mechanical systems states without classical counterparts - the so-called entangled states. The paper shows and examines various applications of entangled states in the quantum information theory. Recent results connected with characterization and geometry of entangled states are examined with the emphasis on some unsolved mathematical problems.
Źródło:
Acta Physica Polonica A; 2001, 100, Supplement; 43-56
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Mixed States Entanglement and Quantum Communication: Aspects of Quantum Channels Theory
Autorzy:
Horodecki, P.
Powiązania:
https://bibliotekanauki.pl/articles/2030474.pdf
Data publikacji:
2002-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.67.-a
03.65.Ca
03.67.Hk
Opis:
Basic aspects of quantum communication based on quantum channels theory are reviewed together with suitable examples. The key notion of quantum channel capacity is discussed. The role of mixed states entanglement as a practical tool in quantum channels theory is explained in detail. Application of recent results on non-positive partial transpose bound entanglement conjecture to binding entanglement channels shows that validity of the conjecture for some states implies nonadditivity of two-way quantum channel capacity. Some aspects of robustness of entanglement in context of positive maps theory are also discussed.
Źródło:
Acta Physica Polonica A; 2002, 101, 3; 399-424
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tunable Entanglement Sudden Death and Birth in Cavity QED with Nonlinear Kerr-Like Medium
Autorzy:
He, Q.
Xu, J.
Powiązania:
https://bibliotekanauki.pl/articles/1493398.pdf
Data publikacji:
2011-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.65.Ud
03.67.-a
03.67.Mn
Opis:
The influence of nonlinear Kerr-like medium on the phenomenon of entanglement sudden death and birth in a double Jaynes-Cummings model is investigated. It is shown that the entanglement sudden death and birth phenomenon may appear in this system and the duration of entanglement sudden death and birth can be controlled by the nonlinear Kerr-like medium. Particularly, the phenomenon of entanglement sudden death and birth disappears one after another if we increase the value of the Kerr coefficient χ continuously, and all disappears if the value of the Kerr coefficient χ is large enough.
Źródło:
Acta Physica Polonica A; 2011, 120, 3; 390-396
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Translating Concepts of State Transfer to Spin-1 Chains
Autorzy:
Wieśniak, M.
Dutta, A.
Ryu, Junghee
Powiązania:
https://bibliotekanauki.pl/articles/1402299.pdf
Data publikacji:
2015-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.65.Aa
03.67.-a
03.67.Hk
Opis:
State transfer is a well-known routine for various systems of spins-1/2. Still, it is not well studied for chains of spins of larger magnitudes. In this contribution we argue that while perfect state transfer may seem unnatural in spin-1 systems, it is still feasible for arrays of V-type three-level atoms. Tomography of such 1D array is also shown to be possible by acting on one atom from such an array.
Źródło:
Acta Physica Polonica A; 2015, 128, 1; 3-5
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiparty d-Dimensional Quantum Information Splitting
Autorzy:
Grudka, A.
Wójcik, A.
Powiązania:
https://bibliotekanauki.pl/articles/2035617.pdf
Data publikacji:
2002-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.67.-a
89.70.+c
Opis:
Generalization of quantum information splitting protocol from qubits to qudits (quantum d-dimensional systems) is presented.
Źródło:
Acta Physica Polonica A; 2002, 102, 6; 703-707
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Long-Distance Quantum Communication
Autorzy:
Duan, L.
Lukin, M.
Cirac, J. I.
Zoller, P.
Powiązania:
https://bibliotekanauki.pl/articles/2030464.pdf
Data publikacji:
2002-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.67.-a
42.50.-p
Opis:
We show how one can use atomic ensembles in order to construct quantum repeaters. This may allow for quantum communication over arbitrarily long distances.
Źródło:
Acta Physica Polonica A; 2002, 101, 3; 325-336
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantum Information Processing Using Electron Spins in Quantum Dots
Autorzy:
Burkard, G.
Loss, D.
Powiązania:
https://bibliotekanauki.pl/articles/2027449.pdf
Data publikacji:
2001-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.67.Lx
03.67.-a
72.25.Rb
Opis:
We review the theoretical proposal for quantum computing with electron spins in quantum confined structures and discuss the essential requirements for its implementation. The quantum bit is represented by the spin of the electron, as opposed to the charge (orbital) degrees of freedom. In this context, we analyze a number of physical realizations of the elementary building blocks for quantum computation: a universal set of quantum gates, state preparation and measurement. Finally, we discuss the production, transport, and detection of electronic Einstein-Podolski-Rosen pairs, which are an important resource for quantum communication.
Źródło:
Acta Physica Polonica A; 2001, 100, 2; 109-127
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Behavior of Quantum Fisher Information of Bell Pairs under Decoherence Channels
Autorzy:
Ozaydin, F.
Altintas, A.
Bugu, S.
Yesilyurt, C.
Powiązania:
https://bibliotekanauki.pl/articles/1194957.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.67.-a
03.65.Ud
03.65.Yz
Opis:
Quantum Fisher information has recently been an essential tool for analyzing the phase sensitivity of the quantum states in various quantum tasks, requiring high precision, such as quantum clock synchronization, positioning and many applications which include quantum interferometers. Due to the interactions with the environment, all quantum systems are subject to various decoherence effects. Therefore the research on quantum Fisher information under decoherence has been recently attracting more attention. In this work, analyzing the quantum Fisher information, we study the phase sensitivity of bipartite quantum correlations, in particular four Bell pairs amplitude damping channels. For a specific Bell state we arrive at similar results of Greenberger-Horne-Zeilinger (GHZ) states (as expected). For the other three Bell states, we present our results which point the interesting behavior of quantum Fisher information with respect to the decoherence rate. We also find the regions where the quantum Fisher information exhibits discontinuities.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 606-607
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantum Fisher Information of Bipartitions of W States
Autorzy:
Ozaydin, F.
Altintas, A.
Yesilyurt, C.
Bugu, S.
Erol, V.
Powiązania:
https://bibliotekanauki.pl/articles/1192332.pdf
Data publikacji:
2015-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.67.-a
03.65.Ud
03.65.Yz
Opis:
We study the quantum Fisher information (QFI) of W states and W-like states under decoherence. In particular, we find that on the contrary to amplitude damping and depolarizing decoherence, a W-like state of 3 qubits obtained by discarding 1 qubit of a genuine W state of 4 qubits is more robust than a genuine W state of 3 qubits under amplitude amplifying and phase damping decoherence.
Źródło:
Acta Physica Polonica A; 2015, 127, 4; 1233-1235
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Optical Setup for Deterministic Creation of Four Partite W state
Autorzy:
Yesilyurt, C.
Bugu, S.
Diker, F.
Altintas, A.
Ozaydin, F.
Powiązania:
https://bibliotekanauki.pl/articles/1401331.pdf
Data publikacji:
2015-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.67.-a
03.65.Ud
03.65.Yz
Opis:
In order to create polarization based entanglement networks of W₄ state, we propose an optical setup, which uses only four horizontally polarized photons as resource which implies no entanglement requirement as a resource. This setup can generate target state deterministically, by operating several quantum optical gates, which can be realized with current photonics technology. The setup we propose is composed of one Not, two Hadamard, five Controlled Not (CNot) and one Toffoli gate.
Źródło:
Acta Physica Polonica A; 2015, 127, 4; 1230-1232
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the Phase on the Entanglement between a Jaynes-Cummings Atom and an Isolated Atom
Autorzy:
Pang, C.
Liang, M.
Powiązania:
https://bibliotekanauki.pl/articles/1198513.pdf
Data publikacji:
2014-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.65.Ud
42.50.Dv
03.67.-a
Opis:
A scheme is presented to generate an entangled atomic state, for which the quantum phase affects the atom-atom entanglement when the atom interacts with external light fields. The quantum phase enhances the entanglement and extends the time that the system stays in stronger entanglement state or the phase makes the system more robust. It is also shown that the quantum phase is able to delay the entanglement sudden death and hasten the entanglement revival.
Źródło:
Acta Physica Polonica A; 2014, 125, 5; 1069-1074
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remarks on Entanglement, its Sources and Applications
Autorzy:
Żukowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/2030287.pdf
Data publikacji:
2002-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.65.Ud
03.67.-a
42.50.Ar
Opis:
We shall discuss the central role played in the quantum information theory by entanglement. A generalized version of Bell's theorem will be presented, as well as methods in multiphoton interferometry to obtain correlations violating the Bell inequalities. Finally, we shall present some quantum informational applications of entanglement.
Źródło:
Acta Physica Polonica A; 2002, 101, 1; 21-35
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantum Phase Transition in the One-Dimensional XZ Model
Autorzy:
Brzezicki, W.
Oleś, A.
Powiązania:
https://bibliotekanauki.pl/articles/1810415.pdf
Data publikacji:
2009-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.10.Jm
03.67.-a
05.70.Fh
Opis:
We introduce a one-dimensional XZ model with alternating $σ_i^zσ_{i+1}^z$ and $σ_i^x σ_{i+1}^x$ interactions on even/odd bonds, interpolating between the Ising model and the quantum compass model. We present two ways of its exact solution by: (i) mapping to the quantum Ising models, and (ii) using fermions with spin 1/2. In certain cases the nearest neighbor pseudospin correlations change discontinuously at the quantum phase transition, where one finds highly degenerate ground state of the 1D compass model.
Źródło:
Acta Physica Polonica A; 2009, 115, 1; 162-164
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Rule for Evolution of Cooperation in Quantum Games
Autorzy:
Sun, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1807768.pdf
Data publikacji:
2009-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.50.Le
03.67.-a
87.23.-n
Opis:
Cooperation is essential to biological organizations and human society. In this paper, the conditions of dilemmas resolving by quantum strategies in the three games, Prisoners' Dilemma, Chicken Game and Stag Hunt, are presented. The rule for the evolution of cooperation in general quantum games, b/c > $coth^{2}γ$, is put forward. The formation of the rule is similar to those of the five rules in the classical game theory summarized by Nowak. b/c is still the benefit-to-cost ratio of the altruistic act, while γ is a measure for the game's entanglement. The rule is the prerequisite for the realization of cooperation in quantum games.
Źródło:
Acta Physica Polonica A; 2009, 116, 2; 135-140
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł

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