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In this review article,we review the recent development of quantum secure direct communication(QSDC)and deterministic secure quantum communication(DSQC) which both are used to transmit secret message,including the criteria for QSD...
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In this review article,we review the recent development of quantum secure direct communication(QSDC)and deterministic secure quantum communication(DSQC) which both are used to transmit secret message,including the criteria for QSDC,some interesting QSDC protocols,the DSQC protocols and QSDC network,etc.The difference between these two branches of quantum Communication is that DSOC requires the two parties exchange at least one bit of classical information for reading out the message in each qubit,and QSDC does not.They are attractivebecause they are deterministic,in particular,the QSDC protocol is fully quantum mechanical.With sophisticated quantum technology in the future,the QSDC may become more and more popular.For ensuring the safety of QSDC with single photons and quantum information sharing of single qubit in a noisy channel,a quantum privacy amplification protocol has been proposed.It involves very simple CHC operations and reduces the information leakage to a negligible small level.Moreover,with the one-party quantum error correction,a relation has been established between classical linear codes and quantum one-party codes,hence it is convenient to transfer many good classical error correction codes to the quantum world.The one-party quantum error correction codes are especially designed for quantum dense coding and related QSDC protocols based on dense coding.
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摘要 :
In this paper a high-dimension multiparty quantum secret sharing scheme is proposed by using Einstein-Podolsky-Rosen pairs and local unitary operators. This scheme has the advantage of not only having higher capacity, but also sav...
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In this paper a high-dimension multiparty quantum secret sharing scheme is proposed by using Einstein-Podolsky-Rosen pairs and local unitary operators. This scheme has the advantage of not only having higher capacity, but also saving storage space. The security analysis is also given.
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In this paper a scheme for quantum secure direct communication (QSDC) network is proposed with a sequence of polarized single photons. The single photons are prepared originally in the same state |0> by the servers on the network,...
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In this paper a scheme for quantum secure direct communication (QSDC) network is proposed with a sequence of polarized single photons. The single photons are prepared originally in the same state |0> by the servers on the network,which will reduce the difficulty for the legitimate users to check eavesdropping largely. The users code the information on the single photons with two unitary operations which do not change their measuring bases. Some decoy photons,which are produced by operating the sample photons with a Hadamard, are used for preventing a potentially dishonest server from eavesdropping the quantum lines freely. This scheme is an economical one as it is the easiest way for QSDC network communication securely.
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We introduce an attack scheme for eavesdropping freely the ping-pong quantum communication protocol proposed by Bostr(o)m and Felbinger [Phys. Rev. Lett. 89, 187902 (2002)] in a noise channel. The vicious eavesdropper, Eve,interce...
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We introduce an attack scheme for eavesdropping freely the ping-pong quantum communication protocol proposed by Bostr(o)m and Felbinger [Phys. Rev. Lett. 89, 187902 (2002)] in a noise channel. The vicious eavesdropper, Eve,intercepts and measures the travel photon transmitted between the sender and the receiver. Then she replaces the quantum signal with a multi-photon signal in the same state, and measures the returned photons with the measuring basis, with which Eve prepares the fake signal except for one photon. This attack increases neither the quantum channel losses nor the error rate in the sampling instances for eavesdropping check. It works for eavesdropping the secret message transmitted with the ping-pong protocol. Finally, we propose a way for improving the security of the ping-pong protocol.
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This paper presents a scheme for quantum secure direct communication with quantum encryption. The two authorized users use repeatedly a sequence of the pure entangled pairs (quantum key) shared for encrypting and decrypting the se...
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This paper presents a scheme for quantum secure direct communication with quantum encryption. The two authorized users use repeatedly a sequence of the pure entangled pairs (quantum key) shared for encrypting and decrypting the secret message carried by the travelling photons directly. For checking eavesdropping, the two parties perform the single-photon measurements on some decoy particles before each round. This scheme has the advantage that the pure entangled quantum signal source is feasible at present and any eavesdropper cannot steal the message.
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@@ We present a quantum hyperdense coding protocol with hyperentanglement in polarization and spatial-mode degrees of freedom of photons first and then give the details for a quantum secure direct communication(QSDC)protocol based...
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@@ We present a quantum hyperdense coding protocol with hyperentanglement in polarization and spatial-mode degrees of freedom of photons first and then give the details for a quantum secure direct communication(QSDC)protocol based on this quantum hyperdense coding protocol.This QSDC protocol has the advantage of having a higher capacity than the quantum communication protocols with a qubit system.Compared with the QSDC protocol based on superdense coding with d-dimensional systems, this QSDC protocol is more feasible as the preparation of a high-dimension quantum system is more difficult than that of a two-level quantum system at present.
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This paper presents a scheme for faithfully distributing a pure entanglement between two parties over an arbitrary collective-noise channel with linear optics. The transmission is assisted by an additional qubit against collective...
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This paper presents a scheme for faithfully distributing a pure entanglement between two parties over an arbitrary collective-noise channel with linear optics. The transmission is assisted by an additional qubit against collective noise.The receiver can take advantage of the time discrimination and the measurement results of the assistant qubit to reconstruct a pure entanglement with the sender. Although the scheme succeeds probabilistically,the resource used to get a pure entanglement state is finite,and so is easier to establish entanglement in practice than quantum entanglement purification.
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This paper presents a simple way for an eavesdropper to eavesdrop freely the secret message in the experimental realization of quantum communication protocol proposed by Beige et al (2002 Acta Phys. Pol. A 101 357). Moreover, it i...
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This paper presents a simple way for an eavesdropper to eavesdrop freely the secret message in the experimental realization of quantum communication protocol proposed by Beige et al (2002 Acta Phys. Pol. A 101 357). Moreover, it introduces an efficient quantum secure communication protocol based on a publicly known key with decoy photons and two biased bases by modifying the original protocol. The total efficiency of this new protocol is double that of the original one. With a low noise quantum channel, this protocol can be used for transmitting a secret message. At present, this protocol is good for generating a private key efficiently.
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