Quantum Nondemolition Detection of a Propagating Microwave Photon
Artikel i vetenskaplig tidskrift, 2014

The ability to nondestructively detect the presence of a single, traveling photon has been a long-standing goal in optics, with applications in quantum information and measurement. Realizing such a detector is complicated by the fact that photon-photon interactions are typically very weak. At microwave frequencies, very strong effective photon-photon interactions in a waveguide have recently been demonstrated. Here we show how this type of interaction can be used to realize a quantum nondemolition measurement of a single propagating microwave photon. The scheme we propose uses a chain of solid-state three-level systems (transmons) cascaded through circulators which suppress photon backscattering. Our theoretical analysis shows that microwave-photon detection with fidelity around 90% can be realized with existing technologies.

NUMBER

FIELD

CIRCUIT

Författare

Sankar Raman Sathyamoorthy

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Lars Tornberg

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Anton Frisk Kockum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

B. Q. Baragiola

J. Combes

Christopher Wilson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

T. M. Stace

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 112 9 art. no. 093601-

Ämneskategorier

Atom- och molekylfysik och optik

DOI

10.1103/PhysRevLett.112.093601

Mer information

Skapat

2017-10-06