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Description
  • Analyzujeme korelace mezi dvěma stranami sdílejícími obecný smíšenýdvouqubitový stav rho_SM, abychom předpověděli výsledky měření.Je zajímavou otázkou, do jaké míry mohou být předpověděny výsledkydvou doplňujících se projektivních měření na jednom qubitu z výsledkůměřenína druhém qubitu. Pro ohodnocení přepovědí jsme použiliveličiny zvané zisk znalosti DeltaK a doplňkový zisk znalosti DeltaK',kde Pi_S,Pi_S' resp. Pi_M, Pi_M' reprezentují projektivní měřenína qubitu S resp. M.Odvodíme nerovnost DeltaK^2+DeltaK'^2 <= (Bmax/2)^2, kdeBmax je maximální porušení Bellových nerovností.Tato nerovnost omezuje naši schopnost předpovídat doplňující se měřenía platí pro libovolný stav rho_SM a pro jakékoli Pi_S,Pi_S' a Pi_M, Pi_M'.Tento výsledek je ověřen experimentálně nadvoufotonových Wernerových stavech,které jsou připraveny prostřednictvímspontánní sestupné parametrické konverze. (cs)
  • We analyze correlations between two parties sharing a general mixed two-qubit state rho(SM) in order to predict measurement outcomes. It is an interesting question as to what can be predicted about the results of two complementary projective measurements on one qubit from the measurement results on the other qubit. To quantify these predictions the complementary knowledge excesses Delta K(Pi(M) -> Pi(S)) and Delta K(Pi'(M) -> Pi'(S)) are used, where Pi(S), Pi'(S) resp. Pi(M), Pi'(M) represent projective measurements on the qubit S resp. M. We derive an inequality Delta K-2(Pi(M) -> Pi(S)) + Delta K-2(Pi'(M), Pi'(S)) < (B-max/2)(2), where B-max is the maximum violation of Bell inequalities. This inequality restricts our capability to enhance the complementary predictions for any state rho(SM) and for arbitrary Pi(S), Pi'(S) and Pi'(M), Pi'(M). This result is experimentally verified on two-photon Werner states prepared by means of spontaneous para
  • We analyze correlations between two parties sharing a general mixed two-qubit state rho(SM) in order to predict measurement outcomes. It is an interesting question as to what can be predicted about the results of two complementary projective measurements on one qubit from the measurement results on the other qubit. To quantify these predictions the complementary knowledge excesses Delta K(Pi(M) -> Pi(S)) and Delta K(Pi'(M) -> Pi'(S)) are used, where Pi(S), Pi'(S) resp. Pi(M), Pi'(M) represent projective measurements on the qubit S resp. M. We derive an inequality Delta K-2(Pi(M) -> Pi(S)) + Delta K-2(Pi'(M), Pi'(S)) < (B-max/2)(2), where B-max is the maximum violation of Bell inequalities. This inequality restricts our capability to enhance the complementary predictions for any state rho(SM) and for arbitrary Pi(S), Pi'(S) and Pi'(M), Pi'(M). This result is experimentally verified on two-photon Werner states prepared by means of spontaneous para (en)
Title
  • Knowledge Excess Duality and Violation of Bell Inequalities: Theory and
  • Knowledge Excess Duality and Violation of Bell Inequalities: Theory and (en)
  • Dualita mezi zisky znalostí a porušení Bellových nerovností: Teorie a experiment (cs)
skos:prefLabel
  • Knowledge Excess Duality and Violation of Bell Inequalities: Theory and
  • Knowledge Excess Duality and Violation of Bell Inequalities: Theory and (en)
  • Dualita mezi zisky znalostí a porušení Bellových nerovností: Teorie a experiment (cs)
skos:notation
  • RIV/61989592:15310/05:00001821!RIV06-MSM-15310___
http://linked.open.../vavai/riv/strany
  • 195-210
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GP202/03/D239), P(OC P11.003), Z(MSM6198959213)
http://linked.open...iv/cisloPeriodika
  • 5
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 526870
http://linked.open...ai/riv/idVysledku
  • RIV/61989592:15310/05:00001821
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • duality; Bell Inequalities (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • SG - Singapurská republika
http://linked.open...ontrolniKodProRIV
  • [EFEF017BF877]
http://linked.open...i/riv/nazevZdroje
  • Modern Physics Letters B
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 19
http://linked.open...iv/tvurceVysledku
  • Filip, Radim
  • Dušek, Miloslav
  • Soubusta, Jan
  • Černoch, Antonín
  • Gavenda, Miroslav
http://linked.open...n/vavai/riv/zamer
issn
  • 0217-9849
number of pages
http://localhost/t...ganizacniJednotka
  • 15310
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