Are there techniques for ternary photonic computer ?

Click For Summary

Discussion Overview

The discussion revolves around the potential for using photons in computing, specifically exploring the idea of ternary logic (1, 0, -1) as opposed to traditional binary logic. Participants consider the implications of photon spin and memory storage techniques in photonic computing, as well as the feasibility of integrating quantum emitters into photonic circuits.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose that using photons, which are spin 1 particles, could enable a three-valued logic system.
  • Others argue that the spin value of electrons is irrelevant to their use in computers, questioning the initial premise of using photon spin for logic.
  • A participant mentions the future potential of quantum computers, suggesting that theoretical frameworks may exist for such technologies.
  • It is noted that a photon has only two spin states, which raises questions about the feasibility of ternary logic based on photon properties.
  • One participant describes a hybrid approach involving the integration of single photon sources into silicon-based photonic circuits, detailing the technical aspects and potential efficiencies of this method.

Areas of Agreement / Disagreement

Participants express differing views on the relevance of photon spin to computing logic, with some supporting the idea of ternary logic and others contesting it. The discussion remains unresolved regarding the practical implementation of these concepts.

Contextual Notes

There are limitations regarding the assumptions made about photon spin and its application to computing, as well as the dependence on specific definitions of logic systems. The discussion also touches on unresolved mathematical and technical steps related to the proposed hybrid approach.

jk22
Messages
732
Reaction score
25
If instead of electrons, which are spin 1/2 particles, we could use photons, which are spin 1, could we use this fact to have a three valued logic (1,0,-1) ?

How to store photons like in an electronic computer to build the memory ? Are there techniques that allow that ? Thanks.
 
Computer science news on Phys.org
jk22 said:
If instead of electrons, which are spin 1/2 particles, we could use photons, which are spin 1, could we use this fact to have a three valued logic (1,0,-1) ?
the spin value of electrons has NOTHING to do with how they are used in computers.

What have you ever heard that led you to believe otherwise?
 
Sorry I was already in the future, when quantum computers will exist. But in theory ?
 
A photon has only two spin states. (And if you want to know why, you should ask in the proper section)
 
Yes, a hybrid approach: Deterministic Integration of Single Photon Sources in Silicon Based Photonic Circuits
In summary, we have demonstrated controlled integration of preselected nanowire-based single quantum emitters into photonic waveguides. Our novel technique enables scalable integration of selected sources in complex photonic architectures on a single chip. The integrated sources maintain their high optical quality in terms of single photon purity, line width, and intensity with a coupling efficiency to the photonic waveguide as high as 24%. Furthermore, we showed theoretically that for a suspended SiC waveguide, in conjunction with a 1D Bragg reflector, a unidirectional coupling efficiency greater than 86% can be realized. Coupling our quantum emitters to on-chip photonic cavities will allow to investigate the rich physics of cavity quantum electrodynamics, thus enhancing the spontaneous emission rate to accelerate the emission lifetime and approach Fourier-transform limited photons. Finally, by local tuning of the emission energy of single photon sources, indistinguishable photons can be generated as a necessary step toward on-chip optical quantum computation. 2016
 

Similar threads

  • · Replies 29 ·
Replies
29
Views
4K
Replies
3
Views
6K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 23 ·
Replies
23
Views
4K
Replies
14
Views
4K
Replies
5
Views
903
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 10 ·
Replies
10
Views
4K
Replies
10
Views
4K