Quantum

Optical Quantum Memory Processing for Quantum Hashing

Read full article at source ↗

Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 02/11/2026, 05:13:25 UTC.

Briefings

A new optical quantum memory processing method enables sender authentication via quantum hashing using programmable photon-echo qudits. The scheme uses time-resolved coherent detection to accumulate responses from individual time-bins before Bob's memory maps them to a single output mode. Analysis confirms that contemporary optical quantum memories can realize this proof-of-principle architecture, extending quantum memory roles beyond synchronization to active verification in quantum key distribution.

Key points

• The scheme uses a time-resolved coherent detection method to sequentially accumulate coherent responses from individual time-bins within Bob's spin coherence prior to final verification.
• Contemporary optical quantum memories enable a proof of principle realization of the proposed architecture for quantum hashing-based verification protocols.

Context

This research addresses sender authentication in secure quantum communication networks by proposing programmable photon-echo quantum memory processing for a multi-time-bin photonic qudit. The method allows Alice to generate a quantum hash state by transforming a stored wave packet, while Bob's memory coherently maps received time-bin qudits into a single output mode based on phase encoding.

Limitations

The analysis relies on experimentally verified parameters of contemporary optical quantum memories rather than fully realized systems. The study presents a proof-of-principle architecture and discusses potential applications, but does not provide experimental data from completed trials or definitive operational results.

Generated by Bittrees-hosted qwen35-2b sha256:aaf42c8b7c3c on 02/11/2026, 06:08:05 UTC. Based on publisher-provided feed evidence; may not cover the full original article. Check the source for details.

View archived briefing on IPFS
bafybeihx5dwe3mspbd75mgvo7m6ctl5b3pivvwrnxqrnedjly7mhaw2lhi