Coherent router for quantum networks with superconducting qubits

Kasper Sangild Christensen; Stig Elkjær Rasmussen; David Petrosyan; Nikolaj Thomas Zinner

doi:10.1103/PhysRevResearch.2.013004

Coherent router for quantum networks with superconducting qubits

Kasper Sangild Christensen, Stig Elkjær Rasmussen, David Petrosyan, Nikolaj Thomas Zinner

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

13 Citationer (Scopus)

Abstract

Scalable quantum information processing will require quantum networks of qubits with the ability to coherently transfer quantum states between the desired sender and receiver nodes. Here we propose a scheme to implement a quantum router that can direct quantum states from an input qubit to a preselected output qubit. The path taken by the transferred quantum state is controlled by the state of one or more ancilla qubits. This enables directed transport between a sender and a number of receiver nodes, as well as generation of distributed entanglement in the network. We demonstrate the general idea using a two-output setup and discuss how the quantum routing may be expanded to several outputs. We also present a possible realization of our ideas with superconducting circuits.

Originalsprog	Engelsk
Artikelnummer	013004
Tidsskrift	Physical Review Research
Vol/bind	2
Nummer	1
Antal sider	7
ISSN	2643-1564
DOI	https://doi.org/10.1103/PhysRevResearch.2.013004
Status	Udgivet - 2020

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10.1103/PhysRevResearch.2.013004Licens: CC BY

https://arxiv.org/abs/1909.11412

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AU - Petrosyan, David

AU - Zinner, Nikolaj Thomas

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AB - Scalable quantum information processing will require quantum networks of qubits with the ability to coherently transfer quantum states between the desired sender and receiver nodes. Here we propose a scheme to implement a quantum router that can direct quantum states from an input qubit to a preselected output qubit. The path taken by the transferred quantum state is controlled by the state of one or more ancilla qubits. This enables directed transport between a sender and a number of receiver nodes, as well as generation of distributed entanglement in the network. We demonstrate the general idea using a two-output setup and discuss how the quantum routing may be expanded to several outputs. We also present a possible realization of our ideas with superconducting circuits.

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Coherent router for quantum networks with superconducting qubits

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