QEncode

Benchmark Specification

QEncode uses fixed configurations to ensure every benchmark run is reproducible and comparable.

Molecules

H₂

active

Hydrogen

4 qubits

BeH₂

active

Beryllium Hydride

14 qubits

LiH

planned

Lithium Hydride

12 qubits

Encodings

Jordan-Wigner (JW)

Maps fermionic operators to qubit operators preserving locality.

Bravyi-Kitaev (BK)

Balances locality and non-locality for efficient qubit mapping.

Parity

Encodes parity information, enabling qubit reduction techniques.

Ansatz Types

UCCSD

Unitary Coupled Cluster Singles and Doubles

Chemically-inspired ansatz with high accuracy but deeper circuits.

HEA

Hardware-Efficient Ansatz

Shallow circuits optimized for near-term hardware with reduced gate count.

Reproducibility

Every benchmark in QEncode uses a fixed configuration: molecule geometry, basis set, encoding, and ansatz are all predetermined. This eliminates variability across studies and ensures that any researcher running the same benchmark will obtain identical results within numerical precision. Each result is tagged with a unique configuration string (e.g., qenc-h2-bk-uccsd-v1) for unambiguous reference.