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

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.052322· OSTI ID:21413369

Pei, Zhang; Ruifeng, Liu; Hongrong, Li; Fuli, Li ^[1]; Biheng, Liu; Guangcan, Guo ^[2]

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1. MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Department of Applied Physics, Xi'an Jiaotong University, Xi'an 710049 (China)
2. Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei 230026 (China)

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 infinite 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.

• OSTI ID: 21413369
• Journal Information: Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.052322; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GRAPH THEORY
MACH-ZEHNDER INTERFEROMETER
ONE-DIMENSIONAL CALCULATIONS
ORBITAL ANGULAR MOMENTUM
PHOTONS
RANDOMNESS
SPACE
SPIN
ANGULAR MOMENTUM
BOSONS
ELEMENTARY PARTICLES
INTERFEROMETERS
MASSLESS PARTICLES
MATHEMATICS
MEASURING INSTRUMENTS
PARTICLE PROPERTIES