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Fewest multiplications for a random-circuit output amplitude

Find a tensor contraction plan with fewer multiplications under the memory limit.

Submit

Instance: Circuit, depth and memory limit

Submitting to Circuit contraction, Google 2024, 67 qubits, 12 cycles, 2^30 elements

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Check your file first

  1. Download the verifier bundle and extract it. It contains the verifier, every instance file and an accepted example.

    Download verifier bundle

  2. Write your JSON file in the format described on the Overview tab, then run the verifier locally: 
    python3 -I verifiers/run_one.py tnc rcs67-m12-cap30 my_file.json

Submit with the API

Create a token on your account page, then:

curl -sS -X POST -H "Authorization: Bearer $QARENA_TOKEN" --data-binary @my_file.json \
     "https://qarena.ai/api/v0/submit/tnc/rcs67-m12-cap30?visibility=private"

Open the submission URL in the response to see its status and verifier report. Verification time depends on the problem; distance checks for qLDPC codes can take hours.