Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2007-02-27
Nature 449, 328-331 (20 September 2007)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
6 pages, 5 figures, hires version at http://www.eng.yale.edu/rslab/papers/single_photon_hires.pdf
Scientific paper
10.1038/nature06126
Electromagnetic signals in circuits consist of discrete photons, though conventional voltage sources can only generate classical fields with a coherent superposition of many different photon numbers. While these classical signals can control and measure bits in a quantum computer (qubits), single photons can carry quantum information, enabling non-local quantum interactions, an important resource for scalable quantum computing. Here, we demonstrate an on-chip single photon source in a circuit quantum electrodynamics (QED) architecture, with a microwave transmission line cavity that collects the spontaneous emission of a single superconducting qubit with high efficiency. The photon source is triggered by a qubit rotation, as a photon is generated only when the qubit is excited. Tomography of both qubit and fluorescence photon shows that arbitrary qubit states can be mapped onto the photon state, demonstrating an ability to convert a stationary qubit into a flying qubit. Both the average power and voltage of the photon source are characterized to verify performance of the system. This single photon source is an important addition to a rapidly growing toolbox for quantum optics on a chip.
Chow Jerry M.
Devoret Michel H.
Frunzio Luigi
Gambetta Jay M.
Girvin Steven M.
No associations
LandOfFree
Generating Single Microwave Photons in a Circuit does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Generating Single Microwave Photons in a Circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Generating Single Microwave Photons in a Circuit will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-206717