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Search Results: 1 - 10 of 471564 matches for " S. N. Molotkov "
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Experimental scheme for quantum teleportation of a single-photon packet
S. N. Molotkov
Physics , 1998, DOI: 10.1134/1.567857
Abstract: Both complete protocol and optical setup for experimental realization of quantum teleportation of unknown single-photon wave packet are proposed.
Effect of Attenuation and Dispersion in the Communication Channel on the Secrecy of a Quantum Cryptosystem
S. N. Molotkov
Physics , 1996,
Abstract: The effects of dispersion in the communication channel on the secrecy of a quantum cryptosystem based on single photon states with different frequencies are studied. A maximum communication channel length which can still ensure the secrecy of the key generation procedure is found.
Lorentz-Invariant Time-Energy Uncertainty Relation for Relativistic Photon
S. N. Molotkov
Physics , 2002,
Abstract: The time-energy uncertainty relation is discussed for a relativistic massless particle. The Lorentz-invariant uncertainty relation is obtained between the root-mean-square energy deviation and the scatter of registration time. The interconnection between this uncertainty relation and its classical analogue is established.
Long Distance Quantum Key Distribution without Quantum Memory
S. N. Molotkov
Physics , 2002,
Abstract: The paper has been withdrawn by the author because the result obtained has been reported earlier by other authors.
Quantum cryptography based on photon ``frequency'' states: example of a possible realization
S. N. Molotkov
Physics , 1998, DOI: 10.1134/1.558658
Abstract: A quantum cryptosystem is proposed using single-photon states with different frequency spectra as information carriers. A possible experimental implementation of the cryptosystem is discussed.
Quantum teleportation of a single-photon wave packet
S. N. Molotkov
Physics , 1998, DOI: 10.1016/S0375-9601(98)00423-X
Abstract: A quantum teleportation scheme based on the EPR-pair entangled with respect to the ``energy+time'' variables is proposed. Teleportation of the multimode state of a single-photon wave packet is considered.
Quantum Cryptography Based on the Time--Energy Uncertainty Relation
S. N. Molotkov,S. S. Nazin
Physics , 1996, DOI: 10.1134/1.567104
Abstract: A new cryptosystem based on the fundamental time--energy uncertainty relation is proposed. Such a cryptosystem can be implemented with both correlated photon pairs and single photon states.
Photon Frequency Entanglement Swapping
S. N. Molotkov,S. S. Nazin
Physics , 1998, DOI: 10.1016/S0375-9601(98)00890-1
Abstract: We propose a simple non-linear crystal based optical scheme for experimental realization of the frequency entanglement swapping between the photons belonging to two independent biphotons.
Relativistic Restrictions on the Distinguishability of Orthogonal Quantum States
S. N. Molotkov,S. S. Nazin
Physics , 2001, DOI: 10.1134/1.1493158
Abstract: We analyze the restrictions on the distinguishability of quantum states imposed by special relativity. An explicit expression relating the error probability for distinguishing between two orthogonal single-photon states with the time $T$ elapsed from the start of the measurement procedure until the measurement result is obtained by the observer.
Relativistic quantum coin tossing
S. N. Molotkov,S. S. Nazin
Physics , 1999, DOI: 10.1134/1.568249
Abstract: A relativistic quantum information exchange protocol is proposed allowing two distant users to realize ``coin tossing'' procedure. The protocol is based on the point that in relativistic quantum theory reliable distinguishing between the two orthogonal states generally requires a finite time depending on the structure of these states.
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