We report the experimental demonstration of a one-way quantum protocol reliably operating in the presence of decoherence. Information is protected by designing an appropriate decoherence-free sub-space for a cluster state resource. We demonstrate our scheme in an all-optical setup, encoding the information into the polarization states of four photons. A measurement-based one-way information-transfer protocol is performed with the photons exposed to severe symmetric phase-damping noise. Remarkable protection of information is accomplished, delivering nearly ideal outcomes.We report the experimental demonstration of a one-way quantum protocol reliably operating in the presence of decoherence. Information is protected by designing an appropriate decoherence-free sub-space for a cluster state resource. We demonstrate our scheme in an all-optical setup, encoding the information into the polarization states of four photons. A measurement-based one-way information-transfer protocol is performed with the photons exposed to severe symmetric phase-damping noise. Remarkable protection of information is accomplished, delivering nearly ideal outcomes.

arXiv:0708.0960Physical Review LettersDec 19, 200738 citations

Information Transfer During Quantum Measurement

Nima Lashkari

APSMar 1, 20040 citations

Quantum Measurements and Information Theory

K. -E. Hellwig

Springer eBooksJan 1, 19920 citations

自适应拓扑拓扑层级的量子信息传输

Jincheng Zhang

Quantum information transfer is a critical challenge in quantum computing and quantum communication. Traditional methods often struggle with the inherent fragility of quantum states, making reliable and efficient transfer difficult. This paper explores a novel quantum information transfer algorithm based on the concept of adaptive topology, aiming to overcome these limitations through precise encoding and transmission. We propose a system where the quantum state is encoded and manipulated within a dynamically evolving topology, allowing for enhanced fidelity and reduced error rates. The core mechanism utilizes a self-organizing topology to ensure the preservation of quantum information during transmission. We analyze the algorithm's performance, demonstrating significant improvements in transfer efficiency and fidelity compared to existing approaches. This work contributes to the advancement of quantum information technologies by providing a robust and adaptable framework for secure and reliable quantum communication.Quantum information transfer is a critical challenge in quantum computing and quantum communication. Traditional methods often struggle with the inherent fragility of quantum states, making reliable and efficient transfer difficult. This paper explores a novel quantum information transfer algorithm based on the concept of adaptive topology, aiming to overcome these limitations through precise encoding and transmission. We propose a system where the quantum state is encoded and manipulated within a dynamically evolving topology, allowing for enhanced fidelity and reduced error rates. The core mechanism utilizes a self-organizing topology to ensure the preservation of quantum information during transmission. We analyze the algorithm's performance, demonstrating significant improvements in transfer efficiency and fidelity compared to existing approaches. This work contributes to the advancement of quantum information technologies by providing a robust and adaptable framework for secure and reliable quantum communication.

Sep 5, 20260 citations

Quantum measurements and information theory

K. -E. Hellwig

International Journal of Theoretical PhysicsDec 1, 19937 citations

Dynamics of the Measurement of Nuclear Spins in a Solid-State Quantum Computer

G. P. Berman, David K Campbell, Gary D. Doolen +1 more

We study numerically the process of nuclear spin measurement in a solid-state quantum computer of the type proposed by Kane by modeling the quantum dynamics of two coupled nuclear spins on $^{31}$ P donors implanted in silicon. We estimate the minimum measurement time necessary for the reliable transfer of quantum information from the nuclear spin subsystem to the electronic subsystem. We also calculate the probability of error for typical values of the external noise.We study numerically the process of nuclear spin measurement in a solid-state quantum computer of the type proposed by Kane by modeling the quantum dynamics of two coupled nuclear spins on $^{31}$P donors implanted in silicon. We estimate the minimum measurement time necessary for the reliable transfer of quantum information from the nuclear spin subsystem to the electronic subsystem. We also calculate the probability of error for typical values of the external noise.

arXiv:cond-mat/9905200May 13, 19994 citations

We study numerically the process of nuclear spin measurement in a solid-state quantum computer of the type proposed by Kane by modeling the quantum dynamics of two coupled nuclear spins on

^{31}

P donors implanted in silicon. We estimate the minimum measurement time necessary for the reliable transfer of quantum information from the nuclear spin subsystem to the electronic subsystem. We also calculate the probability of error for typical values of the external noise.