Relative resilience to noise of standard and sequential approaches to measurement-based quantum computation

Abstract

A possible alternative to the standard model of measurement-based quantum computation (MBQC) is offered by the sequential model of MBQC -- a particular class of quantum computation via ancillae. Although these two models are equivalent under ideal conditions, their relative resilience to noise in practical conditions is not yet known. We analyze this relationship for various noise models in the ancilla preparation and in the entangling-gate implementation. The comparison of the two models is performed utilizing both the gate infidelity and the diamond distance as figures of merit. Our results show that in the majority of instances the sequential model outperforms the standard one in regard to a universal set of operations for quantum computation. Further investigation is made into the performance of sequential MBQC in experimental scenarios, thus setting benchmarks for possible cavity-QED implementations.

11 pages, 11 figures; close to published version

References in corpus (16)

• Microwave photonics with superconducting quantum circuits
• Universal Quantum Computation with Continuous-Variable Cluster States
• High-fidelity preparation, gates, memory and readout of a trapped-ion quantum bit
• A Quantum Gate between a Flying Optical Photon and a Single Trapped Atom
• Deterministic Generation of a Cluster State of Entangled Photons
• A photonic cluster state machine gun
• Randomized benchmarking and process tomography for gate errors in a solid-state qubit
• Generation of one-million-mode continuous-variable cluster state by unlimited time-domain multiplexing
• Quantifying the quantum gate fidelity of single-atom spin qubits in silicon by randomized benchmarking
• Experimental demonstration of a resonator-induced phase gate in a multi-qubit circuit QED system
• Randomized Benchmarking of Multi-Qubit Gates
• Quantum computational capability of a 2D valence bond solid phase
• Heralded Storage of a Photonic Quantum Bit in a Single Atom
• Arbitrarily Large Continuous-Variable Cluster States from a Single Quantum Nondemolition Gate
• Gapped Two-Body Hamiltonian for continuous-variable quantum computation
• Hybrid quantum computing with ancillas