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

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

13 Citations (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.

Original language	English
Article number	013004
Journal	Physical Review Research
Volume	2
Issue	1
Number of pages	7
ISSN	2643-1564
DOIs	https://doi.org/10.1103/PhysRevResearch.2.013004
Publication status	Published - Jan 2020

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10.1103/PhysRevResearch.2.013004Licence: CC BY

https://arxiv.org/abs/1909.11412

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Coherent router for quantum networks with superconducting qubits

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