Search: id:"swepub:oai:research.chalmers.se:dfbcd675-d579-4c3a-806a-e182badb5410" >
Noise spectroscopy ...
Noise spectroscopy through dynamical decoupling with a superconducting flux qubit
-
- Bylander, Jonas, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
Gustavsson, S. (author)
-
Yan, F. (author)
-
show more...
-
Yoshihara, F. (author)
-
Harrabi, K. (author)
-
Fitch, G. (author)
-
Cory, D.G. (author)
-
Nakamura, Y. (author)
-
Tsai, J.S. (author)
-
Oliver, W.D. (author)
-
show less...
-
(creator_code:org_t)
- 2011-05-08
- 2011
- English.
-
In: Nature Physics. - : Springer Science and Business Media LLC. - 1745-2481 .- 1745-2473. ; 7:7, s. 565-570
- Related links:
-
http://dx.doi.org/10...
-
show more...
-
http://arxiv.org/pdf...
-
https://doi.org/10.1...
-
https://research.cha...
-
show less...
Abstract
Subject headings
Close
- Quantum coherence in natural and artificial spin systems is fundamental to applications ranging from quantum information science to magnetic-resonance imaging and identification. Several multipulse control sequences targeting generalized noise models have been developed to extend coherence by dynamically decoupling a spin system from its noisy environment. In any particular implementation, however, the efficacy of these methods is sensitive to the specific frequency distribution of the noise, suggesting that these same pulse sequences could also be used to probe the noise spectrum directly. Here we demonstrate noise spectroscopy by means of dynamical decoupling using a superconducting qubit with energy-relaxation time T1 =12 μs. We first demonstrate that dynamical decoupling improves the coherence time T 2 in this system up to the T2 =2 T1 limit (pure dephasing times exceeding 100 μs), and then leverage its filtering properties to probe the environmental noise over a frequency (f) range 0.2-20 MHz, observing a 1/fα distribution with α
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Bylander, Jonas, ...
-
Gustavsson, S.
-
Yan, F.
-
Yoshihara, F.
-
Harrabi, K.
-
Fitch, G.
-
show more...
-
Cory, D.G.
-
Nakamura, Y.
-
Tsai, J.S.
-
Oliver, W.D.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Atom and Molecul ...
-
- ENGINEERING AND TECHNOLOGY
-
ENGINEERING AND ...
-
and Nano technology
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Condensed Matter ...
- Articles in the publication
-
Nature Physics
- By the university
-
Chalmers University of Technology