The Experts below are selected from a list of 141 Experts worldwide ranked by ideXlab platform
Shi-hai Dong - One of the best experts on this subject based on the ideXlab platform.
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Quantum teleportation and information splitting via four-qubit cluster state and a Bell state
Frontiers of Physics, 2017Co-Authors: Marlon David González Ramírez, Babatunde James Falaye, Guo-hua Sun, M. Cruz-irisson, Shi-hai DongAbstract:Quantum teleportation provides a “bodiless” way of transmitting the quantum state from one object to another, at a distant location, using a Classical Communication Channel and a previously shared entangled state. In this paper, we present a tripartite scheme for probabilistic teleportation of an arbitrary single qubit state, without losing the information of the state being teleported, via a fourqubit cluster state of the form | ϕ >_1234 = α |0000>+ β |1010>+ γ |0101>- η |1111>, as the quantum Channel, where the nonzero real numbers α , β , γ , and η satisfy the relation j α j2 + | β |^2 + | γ |^2 + | η |^2 = 1. With the introduction of an auxiliary qubit with state |0>, using a suitable unitary transformation and a positive-operator valued measure (POVM), the receiver can recreate the state of the original qubit. An important advantage of the teleportation scheme demonstrated here is that, if the teleportation fails, it can be repeated without teleporting copies of the unknown quantum state, if the concerned parties share another pair of entangled qubit. We also present a protocol for quantum information splitting of an arbitrary two-particle system via the aforementioned cluster state and a Bell-state as the quantum Channel. Problems related to security attacks were examined for both the cases and it was found that this protocol is secure. This protocol is highly efficient and easy to implement.
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Quantum teleportation and information splitting via four-qubit cluster state and a Bell state
Frontiers of Physics, 2017Co-Authors: Marlon David González Ramírez, Babatunde James Falaye, Guo-hua Sun, M. Cruz-irisson, Shi-hai DongAbstract:Quantum teleportation provides a `bodiless' way of transmitting the quantum state from one object to another, at a distant location, using a Classical Communication Channel and a previously shared entangled state. In this paper, we present a tripartite scheme for probabilistic teleportation of an arbitrary single qubit state, without losing the information of the state being teleported, via a four-qubit cluster state of the form $\left.|{\phi}\right\rangle_{1234}=\left.\alpha|0000\right\rangle+\left.\beta|1010\right\rangle+\left.\gamma|0101\right\rangle-\eta\left.|1111\right\rangle$, as the quantum Channel, where the nonzero real numbers $\alpha$, $\beta$, $\gamma$, and $\eta$ satisfy the relation $|\alpha|^2+|\beta|^2+|\gamma|^2+|\eta|^2=1$. With the introduction of an auxiliary qubit with state $\left|0\right\rangle$, using a suitable unitary transformation and a positive-operator valued measure (POVM), the receiver can recreate the state of the original qubit. An important advantage of the teleportation scheme demonstrated here is that, if the teleportation fails, it can be repeated without teleporting copies of the unknown quantum state, if the concerned parties share another pair of entangled qubit. We also present a protocol for quantum information splitting of an arbitrary two-particle system via the aforementioned cluster state and a Bell-state as the quantum Channel. Problems related to security attacks were examined for both the cases and it was found that this protocol is secure. This protocol is highly efficient and easy to implement.
Ivan B. Djordjevic - One of the best experts on this subject based on the ideXlab platform.
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Employing covert Communications-based information reconciliation and multiple spatial modes to polarization entanglement QKD
Optics letters, 2019Co-Authors: John Gariano, Ivan B. DjordjevicAbstract:The information that is leaked to an eavesdropper during the error reconciliation phase of quantum key distribution (QKD) protocols limits the maximum bit error rate (BER) of a system. In a standard QKD protocol, parity bits are transmitted over an authenticated noiseless Channel, to which Eve has access. This Letter presents the concept of using a covert Classical Communication Channel to transmit the parity bits between Alice and Bob without Eve gaining information of the transmitted parity bits. This allows for higher secure key generation rates and operation of a QKD system in which the BER exceeds the limit of the standard protocol. This concept is then applied to a practical free-space optical system that contains multiple parallel Channels, where Channel loss, crosstalk, atmospheric turbulence effects, and noise are considered.
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Polarization Entanglement Quantum Key Distribution with Covert Classical Communications
2018 IEEE Photonics Conference (IPC), 2018Co-Authors: John Gariano, Ivan B. DjordjevicAbstract:By using a covert Classical Communication Channel for error reconciliation in QKD systems, higher SKRs are capable of being achieved. Assuming transmission over a 30km maritime Channel, our previous results for the selection of optimum wavelength for use are re-examined.
Marlon David González Ramírez - One of the best experts on this subject based on the ideXlab platform.
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Quantum teleportation and information splitting via four-qubit cluster state and a Bell state
Frontiers of Physics, 2017Co-Authors: Marlon David González Ramírez, Babatunde James Falaye, Guo-hua Sun, M. Cruz-irisson, Shi-hai DongAbstract:Quantum teleportation provides a “bodiless” way of transmitting the quantum state from one object to another, at a distant location, using a Classical Communication Channel and a previously shared entangled state. In this paper, we present a tripartite scheme for probabilistic teleportation of an arbitrary single qubit state, without losing the information of the state being teleported, via a fourqubit cluster state of the form | ϕ >_1234 = α |0000>+ β |1010>+ γ |0101>- η |1111>, as the quantum Channel, where the nonzero real numbers α , β , γ , and η satisfy the relation j α j2 + | β |^2 + | γ |^2 + | η |^2 = 1. With the introduction of an auxiliary qubit with state |0>, using a suitable unitary transformation and a positive-operator valued measure (POVM), the receiver can recreate the state of the original qubit. An important advantage of the teleportation scheme demonstrated here is that, if the teleportation fails, it can be repeated without teleporting copies of the unknown quantum state, if the concerned parties share another pair of entangled qubit. We also present a protocol for quantum information splitting of an arbitrary two-particle system via the aforementioned cluster state and a Bell-state as the quantum Channel. Problems related to security attacks were examined for both the cases and it was found that this protocol is secure. This protocol is highly efficient and easy to implement.
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Quantum teleportation and information splitting via four-qubit cluster state and a Bell state
Frontiers of Physics, 2017Co-Authors: Marlon David González Ramírez, Babatunde James Falaye, Guo-hua Sun, M. Cruz-irisson, Shi-hai DongAbstract:Quantum teleportation provides a `bodiless' way of transmitting the quantum state from one object to another, at a distant location, using a Classical Communication Channel and a previously shared entangled state. In this paper, we present a tripartite scheme for probabilistic teleportation of an arbitrary single qubit state, without losing the information of the state being teleported, via a four-qubit cluster state of the form $\left.|{\phi}\right\rangle_{1234}=\left.\alpha|0000\right\rangle+\left.\beta|1010\right\rangle+\left.\gamma|0101\right\rangle-\eta\left.|1111\right\rangle$, as the quantum Channel, where the nonzero real numbers $\alpha$, $\beta$, $\gamma$, and $\eta$ satisfy the relation $|\alpha|^2+|\beta|^2+|\gamma|^2+|\eta|^2=1$. With the introduction of an auxiliary qubit with state $\left|0\right\rangle$, using a suitable unitary transformation and a positive-operator valued measure (POVM), the receiver can recreate the state of the original qubit. An important advantage of the teleportation scheme demonstrated here is that, if the teleportation fails, it can be repeated without teleporting copies of the unknown quantum state, if the concerned parties share another pair of entangled qubit. We also present a protocol for quantum information splitting of an arbitrary two-particle system via the aforementioned cluster state and a Bell-state as the quantum Channel. Problems related to security attacks were examined for both the cases and it was found that this protocol is secure. This protocol is highly efficient and easy to implement.
Gustavo Rigolin - One of the best experts on this subject based on the ideXlab platform.
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Erratum: Minimal Set of Local Measurements and Classical Communication for Two-Mode Gaussian State Entanglement Quantification [Phys. Rev. Lett. 98, 150501 (2007)]
Physical Review Letters, 2007Co-Authors: Luis F. Haruna, Marcos C. De Oliveira, Gustavo RigolinAbstract:We develop the minimal requirements for the complete entanglement quantification of an arbitrary two-mode bipartite Gaussian state via local measurements and a Classical Communication Channel. The minimal set of measurements is presented as a reconstruction protocol of local covariance matrices and no previous knowledge of the state is required but its Gaussian character. The protocol becomes very simple mostly when dealing with Gaussian states transformed to its standard form, since photocounting/intensity measurements define the whole set of entangled states. In addition, conditioned on some prior information, the protocol is also useful for a complete global state reconstruction.Comment: 5 pages, 1 figure. Replaced with final published versio
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Minimal set of local measurements and Classical Communication for two-mode Gaussian state entanglement quantification.
Physical review letters, 2007Co-Authors: Luis F. Haruna, Marcos C. De Oliveira, Gustavo RigolinAbstract:We develop the minimal requirements for the complete entanglement quantification of an arbitrary two-mode bipartite Gaussian state via local measurements and a Classical Communication Channel. The minimal set of measurements is presented as a reconstruction protocol of local covariance matrices and no previous knowledge of the state is required but its Gaussian character. The protocol becomes very simple mostly when dealing with Gaussian states transformed to its standard form, since photocounting or intensity measurements define the whole set of entangled states. In addition, conditional on some prior information, the protocol is also useful for a complete global state reconstruction.
John Gariano - One of the best experts on this subject based on the ideXlab platform.
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Employing covert Communications-based information reconciliation and multiple spatial modes to polarization entanglement QKD
Optics letters, 2019Co-Authors: John Gariano, Ivan B. DjordjevicAbstract:The information that is leaked to an eavesdropper during the error reconciliation phase of quantum key distribution (QKD) protocols limits the maximum bit error rate (BER) of a system. In a standard QKD protocol, parity bits are transmitted over an authenticated noiseless Channel, to which Eve has access. This Letter presents the concept of using a covert Classical Communication Channel to transmit the parity bits between Alice and Bob without Eve gaining information of the transmitted parity bits. This allows for higher secure key generation rates and operation of a QKD system in which the BER exceeds the limit of the standard protocol. This concept is then applied to a practical free-space optical system that contains multiple parallel Channels, where Channel loss, crosstalk, atmospheric turbulence effects, and noise are considered.
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Polarization Entanglement Quantum Key Distribution with Covert Classical Communications
2018 IEEE Photonics Conference (IPC), 2018Co-Authors: John Gariano, Ivan B. DjordjevicAbstract:By using a covert Classical Communication Channel for error reconciliation in QKD systems, higher SKRs are capable of being achieved. Assuming transmission over a 30km maritime Channel, our previous results for the selection of optimum wavelength for use are re-examined.