Abstract
We describe and experimentally demonstrate a more practical three-party quantum secret sharing (QSS) protocol using polarization-entangled photon pairs. The source itself serves as an active participant and can switch between the required photon states by modulating the pump beam only, thereby making the protocol less susceptible to loss and amenable to fast switching. We derive a security proof based on quantum key distribution, demonstrating our QSS protocol to be secure against both eavesdropping and dishonest participants. Compared to three-photon protocols, the practical efficiency is dramatically improved as there is no need to generate, transmit, or detect a third photon.
| Original language | English |
|---|---|
| Article number | 062311 |
| Journal | Physical Review A |
| Volume | 99 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 11 2019 |
Funding
This work was performed at Oak Ridge National Laboratory, managed by UT-Battelle for the U.S. Department of Energy under Contract No. DEAC05-00OR22725. Funding was provided by the U.S. Department of Energy under the Cybersecurity for Energy Delivery Systems (CEDS) program.