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Cooling a micromech...
Cooling a micromechanical resonator to its ground state by measurement and feedback
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- Bergenfeldt, Christian (author)
- Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Molmer, Klaus (author)
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(creator_code:org_t)
- 2009
- 2009
- English.
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In: Physical Review A (Atomic, Molecular and Optical Physics). - 1050-2947. ; 80:4
- Related links:
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http://dx.doi.org/10...
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Abstract
Subject headings
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- We present an analysis of the cooling of a micromechanical resonator by means of measurement and feedback. The measurements are performed via the coupling to a Cooper-pair box, and although the coupling does not lead to net cooling, the extraction of information and hence entropy from the system leads to a pure quantum state. Under suitable circumstances, the states become very close to coherent states, conditioned on the measurement record, and can hence be displaced to the oscillator ground state.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- resonators
- micromechanical
- ground states
- entropy
- cooling
- Cooper pairs
- quantum theory
Publication and Content Type
- art (subject category)
- ref (subject category)
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