Search: onr:"swepub:oai:research.chalmers.se:99b0127e-c63d-460b-919b-f89ef8c83136" > Quantum efficiency,...
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000 | 04523naa a2200469 4500 | |
001 | oai:research.chalmers.se:99b0127e-c63d-460b-919b-f89ef8c83136 | |
003 | SwePub | |
008 | 211001s2021 | |||||||||||000 ||eng| | |
024 | 7 | a https://doi.org/10.1038/s41534-021-00480-52 DOI |
024 | 7 | a https://research.chalmers.se/publication/5262702 URI |
040 | a (SwePub)cth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a art2 swepub-publicationtype |
072 | 7 | a ref2 swepub-contenttype |
100 | 1 | a Lu, Yong,d 1989u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)yongl |
245 | 1 0 | a Quantum efficiency, purity and stability of a tunable, narrowband microwave single-photon source |
264 | c 2021-09-23 | |
264 | 1 | b Springer Science and Business Media LLC,c 2021 |
338 | a electronic2 rdacarrier | |
520 | a We demonstrate an on-demand source of microwave single photons with 71–99% intrinsic quantum efficiency. The source is narrowband (300 kHz) and tuneable over a 600 MHz range around 5.2 GHz. Such a device is an important element in numerous quantum technologies and applications. The device consists of a superconducting transmon qubit coupled to the open end of a transmission line. A π-pulse excites the qubit, which subsequently rapidly emits a single photon into the transmission line. A cancellation pulse then suppresses the reflected π-pulse by 33.5 dB, resulting in 0.005 photons leaking into the photon emission channel. We verify strong antibunching of the emitted photon field and determine its Wigner function. Non-radiative decay and 1/f flux noise both affect the quantum efficiency. We also study the device stability over time and identify uncorrelated discrete jumps of the pure dephasing rate at different qubit frequencies on a time scale of hours, which we attribute to independent two-level system defects in the device dielectrics, dispersively coupled to the qubit. Our single-photon source with only one input port is more compact and scalable compared to standard implementations. | |
650 | 7 | a NATURVETENSKAPx Fysikx Atom- och molekylfysik och optik0 (SwePub)103022 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Atom and Molecular Physics and Optics0 (SwePub)103022 hsv//eng |
650 | 7 | a NATURVETENSKAPx Fysikx Annan fysik0 (SwePub)103992 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Other Physics Topics0 (SwePub)103992 hsv//eng |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Elektroteknik och elektronikx Annan elektroteknik och elektronik0 (SwePub)202992 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Electrical Engineering, Electronic Engineering, Information Engineeringx Other Electrical Engineering, Electronic Engineering, Information Engineering0 (SwePub)202992 hsv//eng |
700 | 1 | a Bengtsson, Andreas,d 1991u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)andbe |
700 | 1 | a Burnett, Jonathan,d 1987u National Physical Laboratory (NPL),Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)burnett |
700 | 1 | a Suri, Baladitya,d 1984u Indian Institute of Science,Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)surib |
700 | 1 | a Sathyamoorthy, Sankar Raman,d 1984u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)sankarr |
700 | 1 | a Renberg Nilsson, Hampus,d 1993u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)vidarh |
700 | 1 | a Scigliuzzo, Marco,d 1987u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)scmarco |
700 | 1 | a Bylander, Jonas,d 1978u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)bylander |
700 | 1 | a Johansson, Göran,d 1971u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)gojo71 |
700 | 1 | a Delsing, Per,d 1959u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)delsing |
710 | 2 | a Chalmers tekniska högskolab National Physical Laboratory (NPL)4 org |
773 | 0 | t npj Quantum Informationd : Springer Science and Business Media LLCg 7:1q 7:1x 2056-6387 |
856 | 4 | u https://research.chalmers.se/publication/526270/file/526270_Fulltext.pdfx primaryx freey FULLTEXT |
856 | 4 | u https://www.nature.com/articles/s41534-021-00480-5.pdf |
856 | 4 8 | u https://doi.org/10.1038/s41534-021-00480-5 |
856 | 4 8 | u https://research.chalmers.se/publication/526270 |
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