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101. http://qi.phys.msu.ru/papers/2009-jetp(e)-108-33.pdf
... Entanglement is achieved by a coherent superposition of pairs emitted from two nonlinear crystals, with the polarization of the biphotons from the first crystal being changed by a transformer placed between the two crystals. ... The polarization of the biphotons generated on the first passage was rotated through 90° by a successive transformation: /4 plateґmirrorґ/4 plate. ... The plates made a polarization transformation of the states of the biphotons generated in the first crystal. ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2009-jetp(e)-108-33.pdf -- 331.0 Кб -- 24.08.2009
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102. http://qi.phys.msu.ru/papers/2008-jetpl(e)-88-636.pdf
... Quantum Key Distribution on BiphotonsґQuquarts with Test States A. P. Shurupov and S. P. Kulik Faculty of Physics, Moscow State University, Moscow, 119992 Russia Received August 13, 2008; in final form, September 18, 2008 The operational inclusion of the subclass of entangled states in a quantum key distribution protocol based on biphotonґququarts is analyzed. ... In this work, we propose a quantum key distribution protocol with the use of so-called "substitutional" twophoton entangled states. ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2008-jetpl(e)-88-636.pdf -- 135.9 Кб -- 13.05.2009
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103. Sergei Kulik: Our group financing
... Russian Foundation for Basic Research . Grant 03-02-16444 ( TEAM LEADER ) - . ... Joint Project of Moscow M.V.Lomonosov State University between Faculty of Physics and Faculty of Computing Mathematics . TEAM LEADER (Faculty of Physiccs) ) . ... Russian Foundation for Basic Research, Grant 05-02-08306 - oriented fundamental research . ...
[ Сохраненная копия ]  Ссылки http://qi.phys.msu.ru/kulik/financing.htm -- 2.1 Кб -- 08.05.2009
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104. Sergei Kulik: Scientific interest
... quantum optics - different types of the light interference, . ... Another branch of my activity covers the problem of biphoton interference (1997-). ... Also we developed the effective interferometric protocols to generate some specific quantum states of light (the Bell states) in the most common case: broad spectrum of the pump (in particular for the femtosecond laser), any type of phase-matching (either type-I or type-II), and arbitrary length of nonlinear crystals. ... QUANTUM TELEPORTER . ...
[ Сохраненная копия ]  Ссылки http://qi.phys.msu.ru/kulik/sci_inter.html -- 5.9 Кб -- 03.04.2009
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105. http://qi.phys.msu.ru/papers/2005-jetpl(e)-82-164.pdf
... Reconstruction of the Polarization States of a Biphoton Field Yu. ... 31, Moscow, 115409 Russia Received June 7, 2005 A method for reconstructing an arbitrary quantum state of an optical system in Hilbert space with dimension d = 4 is discussed. ... At present, nearly complete control has apparently been achieved over two-level optical systems-- polarization, spatial, and frequency states of single photons. ... 3 2005 RECONSTRUCTION OF THE POLARIZATION STATES 167 Fig. ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2005-jetpl(e)-82-164.pdf -- 61.1 Кб -- 03.01.2009
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106. http://qi.phys.msu.ru/papers/2005-jetp(e)-100-521.pdf
... ATOMS, MOLECULES, OPTICS Preparation of Biphotons in Arbitrary Polarization States L. A. Krivitskioe, S. P. Kulik*, G. A. Maslennikov, and M. V. Chekhova Moscow State University, Moscow, 119992 Russia *e-mail: postmast@qopt.phys.msu.su Received October 6, 2004 Abstract--An experiment on preparation of entangled photon pairs (biphotons) in an arbitrary polarization state is described. ... As the half-wave plate was rotated, the biphoton state transformed into |0, 2 (at = 45°). ... Fig. ... 3 2005 Fig...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2005-jetp(e)-100-521.pdf -- 86.9 Кб -- 03.01.2009
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107. http://qi.phys.msu.ru/papers/2006-jetp(e)-102-712.pdf
... ATOMS, MOLECULES, OPTICS Practical Implementation of Multilevel Quantum Cryptography S. P. Kulika,*, G. A. Maslennikovb, and E. V. Morevac Moscow State University, Moscow, 119992 Russia National University of Singapore, Singapore, 119077 Republic of Singapore c Moscow Engineering Physics Institute ( State University), Moscow, 115409 Russia *e-mail: skulik@qopt. phys .msu.su b a Received October 14, 2005 Abstract--The physical principles of a quantum ... D. Bruss, Phys. Rev. Lett. ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2006-jetp(e)-102-712.pdf -- 263.9 Кб -- 03.01.2009
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108. http://qi.phys.msu.ru/papers/2007-jetpl(e)-85-297.pdf
... Combined Phase ґ Time Encoding Method in Quantum Cryptography S. P. Kulika, S. N. Molotkovbґd, and A. P. Makkaveevd b Faculty of Physics, Moscow State University, Moscow, 119992 ... Computational Mathematics and Cybernetics, Moscow State University, Moscow, 119899 Russia Received February 15, 2007 a A new combined phase ґ time encoding method is proposed for fiber optic quantum cryptography systems ... This protocol is a combined phaseґtime encoding method for key distribution. ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2007-jetpl(e)-85-297.pdf -- 164.8 Кб -- 03.01.2009
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109. http://qi.phys.msu.ru/papers/2008-jetpl(e)-87-60.pdf
... 53, Moscow, 119992 Russia c Faculty of Physics, Moscow State University, Moscow, 119992 Russia d Moscow State University of Press, Moscow, 127550 Russia Received November 27, 2007 a It is shown experimentally that polarized entangled two-photon states in a pair of frequency modes can appear in the process of the spontaneous parametric down conversion in ferroelectric crystals with a quasi-regular domain structure (such as potassium dihydrophosphate). ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2008-jetpl(e)-87-60.pdf -- 247.1 Кб -- 03.01.2009
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110. http://qi.phys.msu.ru/papers/2008-jetpl-88-729.pdf
... (Ы Н %? AР ?# Ъ X8 Y UЖ HВ ?У єТ 2Т нР 5Т #Ж HО Ь 5Т vП vР '# С #П vЬ (Р єН T# ? Ч П Ж vП єВ WЫ єВ Ь 5В (Ы H єВ WЫ єВ 9Ы UЬ 9В СЧВ ?О В '? WУ UВ pМ UЖ ?О В '? єВ ? В Ч h? У М WS ? vТ Ъ WЖ '3 В ? Т 2С ЇЪ #Ы (Н М 2С Ь ? ? єО UТ ?М vП (Р єН В ? 2Т 2Р iЪ ? ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2008-jetpl-88-729.pdf -- 223.2 Кб -- 31.10.2008
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111. http://qi.phys.msu.ru/papers/2007-jetp(e)-104-736.pdf
... ATOMS, MOLECULES, OPTICS On Quantum Key Distribution Using Ququarts S. P. Kulik and A. P. Shurupov Moscow State University, Moscow, 119899 Russia e-mail: Sergei.Kulik@gmail.com Received December 29, 2006 Abstract--A comparative analysis of quantum key distribution protocols using qubits and ququarts as information carriers is presented. ... According to [4], information is encoded into quantum states spanned by four mutually unbiased bases. ... Thus, Eve gains no information about the input state. ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2007-jetp(e)-104-736.pdf -- 237.2 Кб -- 27.10.2008
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112. http://qi.phys.msu.ru/papers/2005-jetp-127-589.pdf
И ОММ И НО И К ПИ К ОММ К ?К ? ... ж Д О П Е К И И ДОЕ И НО ? ... О Д И З Ц И И Ц К З Ц Ц ЕК К И К К Ж З Ц Ц РЮ И К И К ?К И К К И К ?К И К ?К И К РК б ввЙШ з й вй И ППНП ДОМММЕК жйзз в КХ в Ф ииК НО И К ПИ ОММ К Ш ж зИ Ш нзК Ъ кК К? Й НО Н К И И  К К НО к аагИ Ш нзК Ъ кК Ф ииК И МН ДОММОЕК лИ К вИ РК в вИ в ЦК з вИ Йдж ви К ЪК Ь К И И К ж к з ей виЙд ЛМПМ НООК КЯ зИ в К ав жИ Ш нзК Ъ кК Ф ииК КЮ ожИ И О М МН ДОММОЕК К ТК К Ргл ааИ К Ф б зЙФ в ж зИ в К гйлб зи жИ Ш нзК Ъ кК Ф ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2005-jetp-127-589.pdf -- 326.5 Кб -- 23.10.2008
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113. http://qi.phys.msu.ru/papers/2008-pra-78-042321.pdf
PHYSICAL REVIEW A 78, 042321 2008 Preparation and characterization of arbitrary states of four-dimensional qudits based on biphotons So-Young Baek,1,* Stanislav S. Straupe,2 Alexander P. Shurupov,2 Sergei P. Kulik,2 ... Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Korea 2 Department of Physics, Moscow State University, Moscow, 119899, Russia Received 30 July 2008; published 22 October 2008 We report interferometric schemes to prepare ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2008-pra-78-042321.pdf -- 241.5 Кб -- 23.10.2008
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114. hobby
. (under construction) . Horses . Classical music . Cookery . BACK
[ Сохраненная копия ]  Ссылки http://qi.phys.msu.ru/kulik/hobby.htm -- 1.3 Кб -- 30.05.2008
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115. Sergei Kulik: my students.
... 1999-2002 (defended). Thesis title: . ... 2002- 2005 (defended). ... Polarization Three-level Systems Based on Biphoton Field" . ... 2003-2005 (defended). ... Transformation and Measurement of Biphotons" . ... 2005-2007 (defended). ... Correlated bipartite systems: Measurement, control and possible applications" . ... Alexander P.SHURUPOV . ... Suggested thesis title: . Multidimensional optical quantum systems in problems of quantum communication" . ... 7. lattice vacancy: . ...
[ Сохраненная копия ]  Ссылки http://qi.phys.msu.ru/kulik/students.htm -- 3.1 Кб -- 29.03.2008
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116. http://qi.phys.msu.ru/kulik/Papers/JETP_Shurupov07.pdf
... ATOMS, MOLECULES, OPTICS On Quantum Key Distribution Using Ququarts S. P. Kulik and A. P. Shurupov Moscow State University, Moscow, 119899 Russia *e-mail: Sergei.Kulik@gmail.com Received December 29, 2006 1 Abstract--A comparative analysis of quantum key distribution protocols using qubits and ququarts as information carriers is presented. ... ANALYSIS OF EAVESDROPPING STRATEGIES To detect eavesdropping attempts, Alice and Bob disclose and compare a fraction of their respective keys. ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/kulik/Papers/JETP_Shurupov07.pdf -- 109.7 Кб -- 27.03.2008
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117. CONTACTS
... Foundation of Physics Group University of Bari (headed by Professor Augusto Garuccio, garuccio@fisica.uniba.it), Department of Physics, Bari, Italy; . ... University of Geneva, Group of Applied Physics, Division of Optics (headed by Professor Nicolas Gisin, Nicolas.Gisin@physics.unige.ch). Joint INTAS project; . ... National University of Singapore, Faculty of Science, Department of Physics (headed by Professor C. Oh) and Laboratory of Quantum Information (headed by Professor Arthur Ekert). ...
[ Сохраненная копия ]  Ссылки http://qi.phys.msu.ru/kulik/Contacts.htm -- 3.3 Кб -- 27.03.2008
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118. http://qi.phys.msu.ru/kulik/Papers/JETP_Karassiov07.pdf
... ATOMS, MOLECULES, OPTICS Polarization Transformations of Multimode Light Fields V. P. Karassiova,* and S. P. Kulikb,** a Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991 Russia b ... Moscow, 119992 Russia * e-mail: vpk43@mail.ru ** e-mail: skulik@qopt.phys.msu.su Received July 19, 2006 Abstract--The concept of P-quasispin is used as a framework for developing a formalism for polarization transformation by means of lossless ... Note that P-quasispin degree Vol. ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/kulik/Papers/JETP_Karassiov07.pdf -- 263.9 Кб -- 27.03.2008
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2007-jetp(e)-104-30.pdf -- 263.9 Кб -- 27.03.2008
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119. http://qi.phys.msu.ru/kulik/Papers/JETLetters_Kalashnikov08.pdf
... 53, Moscow, 119992 Russia c Faculty of Physics, Moscow State University, Moscow, 119992 Russia d Moscow State University of Press, Moscow, 127550 Russia Received November 27, 2007 a It is shown experimentally that polarized entangled two-photon states in a pair of frequency modes can appear in the process of the spontaneous parametric down conversion in ferroelectric crystals with a quasi-regular domain structure (such as potassium dihydrophosphate). ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/kulik/Papers/JETLetters_Kalashnikov08.pdf -- 248.4 Кб -- 29.02.2008
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120. http://qi.phys.msu.ru/kulik/Papers/JETPLetters_Kalashnikov_rus07.pdf
... Е QФ і0 rё і" #F #" # #" ?Г rF УР іК " P G! ?" і! ~ё 5? И H ? GЖ ? ~R GF ?" #! m" 2 є #2 єё ? 630 ґ3 0 ° 3 H 550 V 500 s, nm 'w tu vs ?q 1 j @h # vh t єx ~w } Q 'w єu #n 9u ' Wh i Wh 9i tx ts єq 9n @ 7k Wh z ўh @ 5x Gw і} Q| tl ~{ ёl 7k Wh jz ёh vy 5x 'w tu vs rq p 'o єl 'n ml k Wh i h g ° $ #E #E C C r8 і4 32 10 ') '& %$ Gї ?" ! ...
[ Текст ]  Ссылки http://qi.phys.msu.ru/kulik/Papers/JETPLetters_Kalashnikov_rus07.pdf -- 280.4 Кб -- 04.02.2008
[ Текст ]  Ссылки http://qi.phys.msu.ru/papers/2008-jetpl-87-66.pdf -- 280.4 Кб -- 04.02.2008
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