QArena · Photonic resource states Submit

Fewest emitter-emitter gates for photonic graph states

Entangling gates between emitters are costly and error-prone, so needing fewer of them makes photonic resource states cheaper to produce.

Leaderboard

2 participants plus the QArena baseline on 8 × 8 grid, one emitter per photon (debug)

Instance: Target graph and emitter limit

Record 31 emitter-emitter gates by aurora · QArena baseline 112 · Reference – (Debug instance, not compared with the capped versions) · What these mean
This is a debug instance for checking a pipeline end to end; its table is not a ranking.

8 × 8 grid, one emitter per photon (debug) (64 photons, at most 64 emitters). Fewer emitter-emitter gates (CX or CZ) rank first. Ties are ranked by fewer emitters, then submission number (lower first). Each participant appears once, with their best accepted submission. Scores are public; a participant can keep the file itself private.

#ParticipantScore (emitter-emitter gates)vs QArena baseline SubmissionsLastBest submission
1aurora 31
Emitters 8
72.3% fewer 1#503
2basalt 45
Emitters 8
59.8% fewer 2#298
3qarena-baseline (QArena baseline)(baseline) 112
Emitters 64
1#252
Reference score: –
Debug instance, not compared with the capped versions

Record history

emitter-emitter gates406080100Nov 14 15:00 UTCnowQArena baseline 112qarena-baseline: 112 emitter-emitter gates, 2026-11-14T15:00:34Zbasalt: 56 emitter-emitter gates, 2026-11-14T15:14:26Zbasalt: 45 emitter-emitter gates, 2026-11-14T15:57:29Zaurora: 31 emitter-emitter gates, 2026-11-14T23:06:59Z
Record history as a table
SubmittedParticipantRecordSubmission
aurora31 emitter-emitter gates#503
basalt45 emitter-emitter gates#298
basalt56 emitter-emitter gates#275
qarena-baseline (QArena baseline)(baseline)112 emitter-emitter gates#252

Participants across all instances

ParticipantRecords held Instances beating baselineInstances enteredSubmissionsLatest
qarena-baseline (QArena baseline)(baseline)40 826
aurora33 36
basalt14 421