BeH2_ccpvdz_JW_UCCSD_v4_tapered__sha256_31f7be8f2f7d9f00
VQE Gap
6.6461e-6 Ha
CASCI ref
-15.768411 Ha
Qubits (tapered)
3
CCSD(T) corr.
-6.896e-2 Ha
T-gate count is the resource-relevant cost of a fault-tolerant implementation. It is an estimate from the non-Clifford rotations in the pre-transpilation circuit, assuming standard rotation synthesis to precision ε — not a compiled count for a specific device.
Note on UCCSD circuit metrics
UCCSD uses exponential Pauli operators (exp(iθH)) that are symbolic before compilation. Circuit depth and 2-qubit gate counts are not reported here — they depend on the target hardware and transpiler.
# Clone repo and install pinned environment
git clone https://github.com/qencode-benchmark/qencode-benchmark
cd qencode-benchmark
pip install -r requirements-v4.txt
# Run this entry
python scripts/generate_entry_v4.py \
--molecule BeH2 \
--mapping jordan_wigner \
--ansatz-type uccsd \
--multistart 1 \
--max-iter 500 \
--out-dir releases/v4/db
