Pei Zhang

Publications (11)2.17 Total impact

• Article: Implementing the Deutsch's algorithm with spin-orbital angular momentum of photon without interferometer

  Pei Zhang, Yan Jiang, Rui-Feng Liu, Hong Gao, Hong-Rong Li, Fu-Li Li
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  ABSTRACT: Deutsch's algorithm is the simplest quantum algorithm which shows the acceleration of quantum computer. In this paper, we theoretically advance a scheme to implement quantum Deutsch's algorithm in spin-orbital angular momentum space. Our scheme exploits a newly developed optical device called "q-plate", which can couple and manipulate the spin-orbital angular momentum simultaneously. This experimental setup is of high stability and efficiency theoretically for there is no interferometer in it.
  07/2012;
• Source

  Available from: ArXiv

  Article: Demonstration of Deutsch's Algorithm on a Stable Linear-Optical Quantum Computer

  Pei Zhang, Rui-Feng Liu, Yun-Feng Huang, Hong Gao, Fu-Li Li
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  ABSTRACT: We report an experimental demonstration of quantum Deutsch's algorithm by using linear-optical system. By employing photon's polarization and spatial modes, we implement all balanced and constant functions for quantum computer. The experimental system is very stable and the experimental data are excellent in accordance with the theoretical results.
  09/2010;
• Source

  Available from: ArXiv

  Article: Implementation of one-dimensional quantum walks on spin-orbital angular momentum space of photons

  Pei Zhang, Bi-Heng Liu, Rui-Feng Liu, Hong-Rong Li, Fu-Li Li, Guang-Can Guo
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  ABSTRACT: Photons can carry spin angular momentum (SAM) and orbital angular momentum (OAM), which can be used to realize a qubit system and a high-dimension system respectively. This spin-orbital system is very suitable for implementing one-dimensional discrete-time quantum random walks. We propose a simple scheme of quantum walks on the spin-orbital angular momentum space of photons, where photons walk on the infinity OAM space controlled by their SAM. By employing the recent invention of an optical device, the so-called 'q-plate', our scheme is more simple and efficient than others because there is no Mach-Zehnder interferometer in the scheme. Comment: 5 pages, 1 figure
  02/2010;
• Source

  Available from: ArXiv

  Article: Entanglement distillation from Gaussian input states by coherent photon addition

  Pei Zhang, Hong-Rong Li, Hong Gao, Fu-Li Li
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  ABSTRACT: The entanglement between Gaussian entangled states can be increased by non-Gaussian operations. We design a new scheme named coherent photon addition, which can coherently add one photon generated by spontaneous parametric down conversation process to Gaussian quadrature-entangled light pulses created by a non-degenerate optical parametric amplifier. This operation can increase the entanglement of input two-mode Gaussian states as an entanglement distillation, and provides us a new method of non-Gaussian operation. This scheme can also help us to study the decoherence of adding one to two-mode Gaussian states from coherent photon addition to normal photon addition.
  09/2009;
• Article: Remote control of extraordinary transmission through subwavelength hole arrays

  Xi-Feng Ren, Guo-Ping Guo, Pei Zhang, Yun-Feng Huang, Zhi-Wei Wang, Guang-Can Guo
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  ABSTRACT: For pairs of entangled photons, each seems to know about the state of the other. Using this property of quantum entanglement, we can remotely control the extraordinary optical transmission through subwavelength holes in a metal plate. Our method can also be used for entanglement distillation.
  EPL (Europhysics Letters) 10/2008; 84(3):30005. · 2.17 Impact Factor
• Source

  Available from: ArXiv

  Article: Linear-Optical Implementation of Perfect Discrimination between Single-bit Unitary Operations

  Pei Zhang, Liang Peng, Zhi-Wei Wang, Xi-Feng Ren, Bi-Heng Liu, Yun-Feng Huang, Guang-Can Guo
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  ABSTRACT: Discrimination of unitary operations is a fundamental quantum information processing task. Assisted with linear optical elements, we experimentally demonstrate perfect discrimination between single-bit unitary operations using two methods--sequential scheme and parallel scheme. The complexity and resource consumed in these two schemes are analyzed and compared. Comment: 10 pages, 3 figures
  01/2008;
• Source

  Available from: ArXiv

  Article: Interference of surface plasmon polaritions controlled by the phase of incident light

  Xi-Feng Ren, Guo-Ping Guo, Yun-Feng Huang, Zhi-Wei Wang, Pei Zhang, Guang-Can Guo
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  ABSTRACT: Interference patterns of surface plasmon polaritons(SPPs) are observed in the extraordinary optical transmission through subwavelength holes in optically thick metal plate. It is found that the phase of incident light can be transferred to SPPs. We can control the destructive and constructive interference of SPPs by modulating the relative phase between two incident beams. Using a slightly displaced Mach-Zehnder interferometer, we also observe a SPPs interference pattern composed of bright and dark stripes. Comment: 3pages,5figures
  10/2007;
• Source

  Available from: ArXiv

  Article: Polarization properties of subwavelength hole arrays consisting of rectangular holes

  Xi-Feng Ren, Pei Zhang, Guo-Ping Guo, Yun-Feng Huang, Zhi-Wei Wang, Guang-Can Guo
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  ABSTRACT: Influence of hole shape on extraordinary optical transmission was investigated using hole arrays consisting of rectangular holes with different aspect ratio. It was found that the transmission could be tuned continuously by rotating the hole array. Further more, a phase was generated in this process, and linear polarization states could be changed to elliptical polarization states. This phase was correlated with the aspect ratio of the holes. An intuitional model was presented to explain these results. Comment: 8 pages, 4 figures
  04/2007;
• Source

  Available from: arxiv.org

  Article: Removal of surface plasmon polariton eigenmodes degeneracy

  Xi-Feng Ren, Guo-Ping Guo, Pei Zhang, Yun-Feng Huang, Zhi-Wei Wang, Guang-Can Guo
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  ABSTRACT: The effect of the tilt angle of metal film on the transmissivity of subwavelength holes in optically thick metal film is investigated. The transmission efficiency is found can be highly dependent on the tilt angle. It is also found that when the input photons are polarized not along the eigenmode directions of surface plasmon polariton, a birefringent phenomenon is observed when the array with periodic of subwavelength holes is tilted. Linear polarization states can be changed to elliptical polarization states and a phase can be added between two eigenmodes. The phase is changed with the tilt angle. A model based on surface plasmon polariton eigenmodes degeneracy is presented to explain these experimental results. Comment: 7 pages, 5 figures
  03/2007;
• Source

  Available from: ArXiv

  Article: Linear Optical Implemention of a Quantum Network for Quantum Estimation

  Zhi-Wei Wang, Jian Li, Yun-Feng Huang, Yong-Sheng Zhang, Xi-Feng Ren, Pei Zhang, Guang-Can Guo
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  ABSTRACT: We present a scheme for simulating the quantum network of quantum estimation proposed by A. K. Ekert et al. [Phys. Rev. Lett. 88, 217901 (2002)]. We experimentally implement the scheme with linear optical elements. We perform overlap measurements of two single-qubit states and entanglement-witness measurements of some two-qubit states. In addition, it can also be used for entanglement quantification for some kinds of states. From the other perspective, we physically realize the positive but not completely positive map, transposition.
  08/2006;
• Conference Proceeding: A Novel Wavelength Reservation Protocol for Wavelength-routed Optical Networks

  Jian Li, Pei Zhang, Jie Zhang, Wanyi Gu
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  ABSTRACT: A novel backward reservation protocol with intermediate retry is proposed for wavelength-continuous lightpaths establishment in wavelength-routed optical networks. The results reveal it improves the success rate in lightpaths setup considerably without much incrementing the setup delay.
  Optical Internet and Next Generation Network, 2006. COIN-NGNCON 2006. The Joint International Conference on; 08/2006