Using fewer qubits to correct errors in the three-stage QKD protocol

Abhishek Parakh

doi:10.1117/12.2325891

8 October 2018 Using fewer qubits to correct errors in the three-stage QKD protocol

Abhishek Parakh

Proceedings Volume 10803, Quantum Information Science and Technology IV; 108030A (2018) https://doi.org/10.1117/12.2325891
Event: SPIE Security + Defence, 2018, Berlin, Germany

Abstract

This paper discusses correcting small rotation errors in the three-stage quantum key distribution (QKD) protocol using only two logical qubits thereby increasing communication efficiency. Further, we can correct errors before they accumulate at every stage ensuring that the errors remain small.

Three-stage QKD is tolerant of multi-photon pulses for key exchange and therefore more applicable in real world scenarios. However, given that it requires back and forth communication, any channel errors that occur accumulate. We discuss the proposed error correction protocol in detail and workout each step. We show how the two transacting parties can correct small rotation errors using just two logical qubits in a majority of cases. We compute the efficiency increase and bound on the magnitude of rotation errors that can be tolerated.

Citation Download Citation

Abhishek Parakh "Using fewer qubits to correct errors in the three-stage QKD protocol", Proc. SPIE 10803, Quantum Information Science and Technology IV, 108030A (8 October 2018); https://doi.org/10.1117/12.2325891

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

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