Work

Reqomp: Space-constrained Uncomputation for Quantum Circuits

Year: 2024
Type: article
Abstract: Quantum circuits must run on quantum computers with tight limits on qubit and gate counts. To generate circuits respecting both limits, a promising opportunity is exploiting uncomputation to trade qubits for gates. We present Reqomp, a method to automatically synthesize correct and efficient uncomputation of ancillae while respecting hardware constraints. For a given circuit, Reqomp can offer a wide range of trade-offs between tightly constraining qubit count or gate count. Our evaluation demonstrates that Reqomp can significantly reduce the number of required ancilla qubits by up to 96%. On 80% of our benchmarks, the ancilla qubits required can be reduced by at least 25% while never incurring a gate count increase beyond 28%.
Source: Quantum
Institution: ETH Zurich
Language: English
Open Access status: gold
Estimated APC paid: $215
OpenAlex ID: W4391927561
FWCI: 1.946
Cites: 14
Cited by: 18
Related to: 10