Experimental Demonstration of a Quantum Router

Abstract

The router is a key element for a network. We describe a scheme to realize genuine quantum routing of single-photon pulses based on cascading of conditional quantum gates in a Mach-Zehnder interferometer and report a proof-of-principle experiment for its demonstration using linear optics quantum gates. The polarization of the control photon routes in a coherent way the path of the signal photon while preserving the qubit state of the signal photon represented by its polarization. We demonstrate quantum nature of this router by showing entanglement generated between the initially unentangled control and signal photons, and confirm that the qubit state of the signal photon is well preserved by the router through quantum process tomography.

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Document Details

Document Type
Technical Report
Publication Date
Jul 22, 2015
Accession Number
AD1054481

Entities

People

  • Chong Zu
  • Jiajun Ma
  • Luming Duan
  • Pan‐Yu Hou
  • X. Chang
  • Xinxing Yuan

Organizations

  • Tsinghua University

Tags

DTIC Thesaurus Topics

  • Background Noise
  • Detection
  • Detectors
  • Interferometers
  • Laser Beams
  • Laser Diodes
  • Lasers
  • Mach Zehnder Interferometers
  • Measurement
  • Optical Circuits
  • Polarization
  • Quantum Bits
  • Quantum Computing
  • Quantum Information
  • Quantum States
  • Quantum Tomography
  • Waveplates

Fields of Study

  • Physics

Readers

  • Computer Networking
  • Optical Physics and Photonics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Quantum Computing
  • Quantum Science - Quantum Dots