Imperfect distributed quantum phase estimation
| Autor: | Niels M. P. Neumann, Thomas Attema, Roy van Houte |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Distributed quantum computing
Computer science media_common.quotation_subject Phase estimation Fidelity TheoryofComputation_GENERAL Quantum Physics Quantum Fourier transform 01 natural sciences Article 010305 fluids & plasmas Computer engineering Qubit 0103 physical sciences Quantum phase estimation algorithm Quantum algorithm 010306 general physics Quantum Entanglement fidelity media_common Quantum computer Noisy quantum computing |
| Zdroj: | Computational Science – ICCS 2020 Lecture Notes in Computer Science ISBN: 9783030504328 ICCS (6) International Conference on Computational Science (ICCS) |
| Popis: | In the near-term, the number of qubits in quantum computers will be limited to a few hundreds. Therefore, problems are often too large and complex to be run on quantum devices. By distributing quantum algorithms over different devices, larger problem instances can be run. This distributing however, often requires operations between two qubits of different devices. Using shared entangled states and classical communication, these operations between different devices can still be performed. In the ideal case of perfect fidelity, distributed quantum computing is a solution to achieving scalable quantum computers with a larger number of qubits. In this work we consider the effects on the output fidelity of a quantum algorithm when using noisy shared entangled states. We consider the quantum phase estimation algorithm and present two distribution schemes for the algorithm. We give the resource requirements for both and show that using less noisy shared entangled states results in a higher overall fidelity. |
| Databáze: | OpenAIRE |
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