Work

Observation of Entanglement between Itinerant Microwave Photons and a Superconducting Qubit

Year: 2012

Type: article

Abstract: A localized qubit entangled with a propagating quantum field is well suited to study nonlocal aspects of quantum mechanics and may also provide a channel to communicate between spatially separated nodes in a quantum network. Here, we report the on-demand generation and characterization of Bell-type entangled states between a superconducting qubit and propagating microwave fields composed of zero-, one-, and two-photon Fock states. Using low noise linear amplification and efficient data acquisition we extract all relevant correlations between the qubit and the photon states and demonstrate entanglement with high fidelity.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.109.240501

Authors: C. Eichler, C. Lang, J. M. Fink, J. Govenius, S. Filipp, A. Wallraff

Institution: ETH Zurich

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1983025820

FWCI: 9.141

Cites: 36

Cited by: 106

Related to: 10