The evolution of OAM-entanglement between two qutrits in turbulence

Alpha Hamadou Ibrahim; Filippus S. Roux; Sandeep K. Goyal; Melanie G. McLaren; Thomas Konrad; Andrew Forbes

doi:10.1117/12.2038935

25 February 2014 The evolution of OAM-entanglement between two qutrits in turbulence

Alpha Hamadou Ibrahim, Filippus S. Roux, Sandeep K. Goyal, Melanie G. McLaren, Thomas Konrad, Andrew Forbes

Author Affiliations +

Proceedings Volume 8999, Complex Light and Optical Forces VIII; 899919 (2014) https://doi.org/10.1117/12.2038935
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

The use of Higher-dimensional entangled systems have been proved to signi cantly improve many quantum in- formation tasks. For instance, it has been shown that the use of higher-dimensional entangled systems provides a higher information capacity and an increased security in quantum cryptography. The orbital angular momentum (OAM) state of light is a potential candidate for the implementation of higher-dimensional entangled systems and has thus been considered for free-space quantum communication. However, atmospheric turbulence severely affects the OAM state of photons. In this work, we study the evolution of the OAM entanglement between two qutrits (three-dimensional quantum systems) in atmospheric turbulence both numerically and experimentally. The qutrits are photons entangled in their orbital angular momentum (OAM) states generated by spontaneous parametric down conversion. We propagate one of the photons through turbulence while leaving the other undis- turbed. To compare our results with previous work, we simulate the turbulent atmosphere with a single phase screen based on the Kolmogorov theory of turbulence and we use the tangle to quantify the amount of entangle- ment between the two qutrits. We compare our results with the evolution of OAM entanglement between two qubits.

Citation Download Citation

Alpha Hamadou Ibrahim, Alpha Hamadou Ibrahim, Filippus S. Roux, Filippus S. Roux, Sandeep K. Goyal, Sandeep K. Goyal, Melanie G. McLaren, Melanie G. McLaren, Thomas Konrad, Thomas Konrad, Andrew Forbes, Andrew Forbes, "The evolution of OAM-entanglement between two qutrits in turbulence", Proc. SPIE 8999, Complex Light and Optical Forces VIII, 899919 (25 February 2014); doi: 10.1117/12.2038935; https://doi.org/10.1117/12.2038935

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years