Resource estimate for quantum many-body ground-state preparation on a quantum computer
Jessica Lemieux, Guillaume Duclos-Cianci, David Sénéchal, David Poulin
Abstract
We estimate the resources required to prepare the ground state of a quantum many-body system on a quantum computer of intermediate size. This estimate is made possible using a combination of quantum many-body methods and analytic upper bounds. Our routine can also be used to optimize certain design parameters for specific problem instances. Lastly, we propose and benchmark an improved quantum state preparation procedure. We find that it reduces the circuit $T$-depth by a factor as large as ${10}^{6}$ for intermediate-size lattices.
Topics & Concepts
Benchmark (surveying)QuantumComputer scienceGround stateQuantum computerResource (disambiguation)Quantum algorithmState (computer science)Quantum circuitComputer engineeringAlgorithmQuantum networkPhysicsQuantum mechanicsGeographyGeodesyComputer networkQuantum Computing Algorithms and ArchitectureQuantum Information and CryptographyQuantum and electron transport phenomena