New! Sign up for our free email newsletter.
Science News
from research organizations

Unpolarized single-photon generation with true randomness from diamond

Date:
May 8, 2017
Source:
Tohoku University
Summary:
Scientists have demonstrated dynamically and statically unpolarized single-photon generation using diamond.
Share:
FULL STORY

The Tohoku University research group of Professor Keiichi Edamatsu and Postdoctoral fellow Naofumi Abe has demonstrated dynamically and statically unpolarized single-photon generation using diamond. This result is expected to play a crucial role in hardware random number generation using single photons (quantum dice or quantum coin toss), quantum cryptography and the testing of fundamental problems in quantum mechanics.

Quantum information technology, such as quantum computing and quantum cryptography, has the potential to exceed classical information technology in security and capability. In quantum information technology, single photons play an especially important role.

A unit of quantum information is a quantum bit or qubit. It is a two-state quantum-mechanical system, such as the polarization of a single photon. Conventional research had been focused on the generation of single photons in pure polarization states. But now, the team from Tohoku University has, for the first time, generated single photons in random polarization states.

In their paper, published in Scientic Reports, the authors present the first demonstration that single-photon emission from a specially oriented compound defect (a nitrogen vacancy center) in diamond is dynamically and statically unpolarized with intrinsic randomness.


Story Source:

Materials provided by Tohoku University. Note: Content may be edited for style and length.


Journal Reference:

  1. Naofumi Abe, Yasuyoshi Mitsumori, Mark Sadgrove, Keiichi Edamatsu. Dynamically unpolarized single-photon source in diamond with intrinsic randomness. Scientific Reports, 2017; 7: 46722 DOI: 10.1038/srep46722

Cite This Page:

Tohoku University. "Unpolarized single-photon generation with true randomness from diamond." ScienceDaily. ScienceDaily, 8 May 2017. <www.sciencedaily.com/releases/2017/05/170508112406.htm>.
Tohoku University. (2017, May 8). Unpolarized single-photon generation with true randomness from diamond. ScienceDaily. Retrieved March 28, 2024 from www.sciencedaily.com/releases/2017/05/170508112406.htm
Tohoku University. "Unpolarized single-photon generation with true randomness from diamond." ScienceDaily. www.sciencedaily.com/releases/2017/05/170508112406.htm (accessed March 28, 2024).

Explore More

from ScienceDaily

RELATED STORIES